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Q：Bench Grinder – Electric motor out of service – Wiring disconnection
A： Check electric circuit connection by repairer
Q：Bench Grinder – Electric motor out of service – Stator wiring disconnection
A： Reconnection by repairer
Q：Bench Grinder – Electric motor out of service – Stator wiring disconnection
A： Reconnection by repairer
Q：Bench Grinder – Electric motor out of service – Capacitor damage
A： Replace capacitor by repairer
Q：Bench Grinder – Electric motor out of service – Loose switching contact
A： Replace switchboard by repairer
Q：Bench Grinder – Electric motor out of service – At switch-off
A： Switch on
Q：Bench Grinder – Electric motor out of service – Shortcircuit in power supply
A： Repair and reconnection
Q：Bench Grinder – Electric motor out of service – Disconnection between plug and power socket
A： Put plug in power socket
Q：Bench Grinder – Machine overheating – Overtime running (S2 electric motor)
A： Operate with reference to instruction manual
Q：Bench Grinder – Machine overheating – Misuse on overload
A： Operate with reference to instruction manual
Q：Bench Grinder – Substandard grinding quality – Bearing damage
A： Replace bearing by repairer
Q：Bench Grinder – Substandard grinding quality – Running speed drop
A： Check supply voltage
Q：Bench Grinder – Substandard grinding quality – Nonstandard abrasive wheel
A： Select qualified abrasive wheel
Q：Bench Grinder – Substandard grinding quality – Unmatched type of abrasive wheel
A： Properly select abrasive wheel with reference to raw material to be polished
Q：Bench Grinder – Excessive mechanical vibration – Rubber feet damage
A： Replace with shock absorption rubber feet
Q：Bench Grinder – Excessive mechanical vibration – Uneven operating desk
A： Resetting machine on operating desk
Q：Bench Grinder – Excessive mechanical vibration – Severe wear or damage in bearing
A： Replace bearing by repairer
Q：Bench Grinder – Excessive mechanical vibration – Improper installation or eccentric installation of abrasive wheel
A： Reinstall abrasive wheel
Q：Bench Grinder – Failed to reach rated power – Electrocircuit overload due to lighting device, public utility or other electric appliances
A： No use of public utility or other electric appliances on machine-connected electrocircuit
Q：Bench Grinder – Excessive running noise – Stator/rotor rub against casing
A： Repair or replace stator/rotor by repairer
Q：Bench Grinder – Excessive running noise – Severe wear in bearing
A： Replace bearing by repairer
Q：Bench Grinder – Excessive running noise – Get stuck in mechanical driving device or bearing damage
A： Check mechanical part by repairer
Q：Bench Grinder – Excessive running noise – Electric motor at fault
A： Check motor by repairer
Q：Bench Grinder – Sluggish start-up, falling short of running speed – Low supply voltage
A： Regulate supply voltage
Q：Bench Grinder – Sluggish start-up, falling short of running speed – Capacitor damage
A： Replace capacitor by repairer
Q：Bench Grinder – Sluggish start-up, falling short of running speed – Burnout of switch contact
A： Replace switchboard by repairer
Q：Bench Grinder – Sluggish start-up, falling short of running speed – Unsmooth running in mechanical part
A： Check mechanical part by repairer
Q：Polisher – Substandard polishing effect – Insufficient running speed
A： Regulate running speed
Q：Polisher – Substandard polishing effect – Severe wear of polishing disc or abrasive paper
A： Replace polishing disc or abrasive paper
Q：Polisher – Excessive mechanical vibration – Polishing disc damaged or improper installation
A： Check or replace polishing disc
Q：Polisher – Excessive mechanical vibration – Gear wheel or rotor tooth damaged
A： Replace gear wheel or rotor
Q：Polisher – Excessive mechanical vibration – Rotor damaged
A： Replace rotor by repairer
Q：Polisher – Machine superheating – Insufficient motor cooling
A： Dedust air outlet
Q：Polisher – Machine superheating – Electromotor overload
A： Overload protection
Q：Polisher – Failed to reach rated power – Electrocircuit overload due to lighting device, public utility or other electric appliances
A： No use of public utility or other electric appliances on machine-connected electrocircuit
Q：Polisher – Excessive machinery noise – Polishing disc damaged
A： Replace polishing disc
Q：Polisher – Excessive machinery noise – Gear wheel or rotor tooth damaged
A： Replace gear wheel or rotor
Q：Polisher – Excessive machinery noise – Electric motor at fault
A： Check motor by repairer
Q：Polisher – Excessive sparkling during running – Disconnection between carbon brush and commutator
A： Replace carbon brush
Q：Polisher – Excessive sparkling during running – Overvoltage in supply power
A： Regulate supply voltage
Q：Polisher – Excessive sparkling during running – Ring fire caused by shortcircuit in commutator segment
A： Check or replace rotor by repairer
Q：Polisher – Excessive sparkling during running – Ring fire caused by shortcircuit in rotor winding shortcircuit
A： Check or replace rotor by repairer
Q：Polisher – Excessive sparkling during running – Excessive wearout of carbon brush
A： Replace carbon brush by reparier
Q：Polisher – Excessive sparkling during running – Underpressure in carbon brush spring
A： Replace carbon brush by reparier
Q：Polisher – Sluggish start-up, falling short of running speed – Burnout of switch contact
A： Replace switchboard by repairer
Q：Polisher – Sluggish start-up, falling short of running speed – Constant speed regulating block damaged
A： Replace constant speed regulating block by repairer
Q：Polisher – Sluggish start-up, falling short of running speed – Low supply voltage
A： Regulate supply voltage
Q：Polisher – Sluggish start-up, falling short of running speed – Unsmooth running in mechanical part
A： Check mechanical part by repairer
Q：Polisher – Out of service – Disconnection between carbon brush and commutator or run-out of carbon brush
A： Replace carbon brush
Q：Polisher – Out of service – Stator wiring disconnection
A： Reconnection by repairer
Q：Polisher – Out of service – Burnout of stator or rotor coil
A： Replace stator or rotor by repairer
Q：Polisher – Out of service – Constant speed regulating block damaged
A： Replace constant speed regulating block by repairer
Q：Polisher – Out of service – Loose switching contact
A： Replace switchboard by repairer
Q：Polisher – Out of service – At switch-off
A： Switch on
Q：Polisher – Out of service – Shortcircuit in power supply
A： Repair and reconnection
Q：Polisher – Out of service – Disconnection between plug and power socket
A： Put plug in power socket
Q：Angle Grinder – Substandard cutting effect or grinding effect – Severe wear of cutting blade or grinding disc
A： Replace cutting blade or grinding disc
Q：Angle Grinder – Excessive mechanical vibration – Improper installation of cutting blade or grinding disc
A： Redo with reference to installation specification
Q：Angle Grinder – Excessive mechanical vibration – Gear wheel damage
A： Replace gear wheel or rotor by repairer
Q：Angle Grinder – Excessive mechanical vibration – Rotor damage
A： Replace electric machine rotor by repairer
Q：Angle Grinder – Machine superheating – Insufficient motor cooling
A： Dedust air outlet
Q：Angle Grinder – Machine superheating – Electromotor overload
A： Overload protection
Q：Angle Grinder – Failed to reach rated power – Electrocircuit overload due to lighting device, public utility or other electric appliances
A： No use of public utility or other electric appliances on machine-connected electrocircuit
Q：Angle Grinder – Excessive machinery noise – Gear wheel failure
A： Replace gear wheel or rotor by repairer
Q：Angle Grinder – Excessive machinery noise – Motor failure, edge friction or bearing damage
A： Check or replace motor or bearing by repairer
Q：Angle Grinder – Excessive sparkling during running – Disconnection between carbon brush and commutator
A： Replace carbon brush
Q：Angle Grinder – Excessive sparkling during running – Overvoltage in supply power
A： Regulate supply voltage
Q：Angle Grinder – Excessive sparkling during running – Ring fire caused by shortcircuit in commutator segment
A： Check or replace rotor by repairer
Q：Angle Grinder – Excessive sparkling during running – Ring fire caused by shortcircuit in rotor winding shortcircuit
A： Check or replace rotor by repairer
Q：Angle Grinder – Excessive sparkling during running – Excessive wearout of carbon brush
A： Replace carbon brush by reparier
Q：Angle Grinder – Excessive sparkling during running – Underpressure in carbon brush spring
A： Replace carbon brush by reparier
Q：Angle Grinder – Sluggish start-up, falling short of running speed – Burnout of switch contact
A： Replace switchboard by repairer
Q：Angle Grinder – Sluggish start-up, falling short of running speed – Low supply voltage
A： Regulate supply voltage
Q：Angle Grinder – Sluggish start-up, falling short of running speed – Unsmooth running in mechanical part
A： Check mechanical part by repairer
Q：Angle Grinder – Out of service – Disconnection between carbon brush and commutator
A： Replace carbon brush
Q：Angle Grinder – Out of service – Stator wiring disconnection
A： Reconnection by repairer
Q：Angle Grinder – Out of service – Burnout of stator or rotor coil
A： Replace stator or rotor by repairer
Q：Angle Grinder – Out of service – Damage in soft starting block
A： Replace soft starting block by repairer
Q：Angle Grinder – Out of service – Loose switching contact
A： Replace switchboard by repaire
Q：Angle Grinder – Out of service – At switch-off
A： Switch on
Q：Angle Grinder – Out of service – Shortcircuit in power supply
A： Repair and reconnection
Q：Angle Grinder – Out of service – Disconnection between plug and power socket
A： Put plug in power socket
Q：Corded Drill – Drill chuck in loosening – Drill chuck in wide loosening
A： Replace drill chuck by repairer
Q：Corded Drill – Machine superheating – Unsmooth air outlet
A： Clear up air intake/outlet
Q：Corded Drill – Machine superheating – Electromotor overload
A： Normally operate with reference to specification
Q：Corded Drill – Drilling speed drop – Blcokup at drilling bit during drilling metallized product
A： Stop drilling
Q：Corded Drill – Drilling speed drop – Shortcircuit in rotor
A： Check or replace rotor by repairer
Q：Corded Drill – Drilling speed drop – Damage in machinery parts
A： Replace machinery parts by repairer
Q：Corded Drill – Drilling speed drop – Low supply voltage
A： Regulate supply voltage
Q：Corded Drill – Excessive sparkling – Ring fire caused by shortcircuit in commutator segment
A： Check or replace rotor by repairer
Q：Corded Drill – Excessive sparkling – Ring fire caused by shortcircuit in rotor winding shortcircuit
A： Check or replace rotor by repairer
Q：Corded Drill – Excessive sparkling – Excessive wearout of carbon brush
A： Replace carbon brush by reparier
Q：Corded Drill – Excessive sparkling – Underpressure in carbon brush spring
A： Replace carbon brush by reparier
Q：Corded Drill – Out of service at switch-on – Disconnection between carbon brush and commutator
A： Check connection between carbon brush and commutator by repairer
Q：Corded Drill – Out of service at switch-on – Loose switching contact
A： Replace switchboard by repairer
Q：Corded Drill – Out of service at switch-on – Novoltage in supply socket
A： Check and repair power supply
Q：Corded Drill – Out of service at switch-on – Disconnection between plug and power socket
A： Put plug in power socket
Q：Corded Drill – Out of service at switch-on – Shortcircuit in motor winding
A： Replace stator/rotor by repairer
Q：Cordless Drill – Failed to reach full charging capacity – Accumulator damage
A： Replace accumulator battery
Q：Cordless Drill – Failed to reach full charging capacity – Fuse blowout or damage in electricity charger
A： Repair or replace electricity charger
Q：Cordless Drill – Failed to reach full charging capacity – Shortcircuit in supply power
A： Repair supply power
Q：Cordless Drill – Failed to reach full charging capacity – Disconnection between plug and power socket
A： Put plug in power socket
Q：Cordless Drill – Drill chuck in loosening – Drill chuck in wide loosening
A： Replace drill chuck by repairer
Q：Cordless Drill – Running noise frequently – Fracture in gearing box
A： Replace gearing box by repairer
Q：Cordless Drill – Running noise frequently – Wearout of motor gear wheel
A： Replace gear wheel by repairer
Q：Cordless Drill – Insufficient running – Motor wearout
A： Replace electric motor by repairer
Q：Cordless Drill – Insufficient running – Damage in gear wheel
A： Replace gear wheel by repairer
Q：Cordless Drill – Insufficient running – Insufficient charging capacity
A： Replace fully recharged accumulator
Q：Cordless Drill – Out of service – Switchboard damage
A： Replace switchboard by repairer
Q：Cordless Drill – Out of service – Motor wearout
A： Replace electric motor by repairer
Q：Cordless Drill – Out of service – Accumulator damage
A： Replace accumulator
Q：Cordless Drill – Out of service – Insufficient charging capacity in accumulator
A： Replace fully recharged accumulator
Q：Planer – Failure in variable depth adjusting device – Excessive tight connection between base plate and machine casing
A： Remove grease stain or sawdust between base plate and machine casing
Q：Planer – Failure in variable depth adjusting device – Damage in regulating spring
A： Replace regulating spring by repairer
Q：Planer – Machine superheating – Unsmooth air outlet
A： Clear up air intake/outlet
Q：Planer – Machine superheating – Electromotor overload
A： Normally operate with reference to specification
Q：Planer – Excessive machinery vibration – Fastening screw loosening
A： Check and tighten fastening screw by repairer
Q：Planer – Excessive machinery vibration – Unmatched width and weight of planing blade
A： Replace matched planing blade
Q：Planer – Disconnected running – Wearout of belt pulley
A： Replace belt pulley
Q：Planer – Disconnected running – Wearout or tensile elongation in poly v-belt
A： Replace poly v-belt
Q：Planer – Substandard planing/cutting quality – Running speed drop
A： Check or repair electric motor or poly v-belt by repairer
Q：Planer – Substandard planing/cutting quality – Improper installation of planing blade
A： Reinstall planing blade
Q：Planer – Substandard planing/cutting quality – Bluntness in planing blade edge
A： Replaced with sharpedged blade
Q：Planer – Planing blade running speed drop – Excessive tightening in poly v-belt
A： Replace suitable poly v-belt
Q：Planer – Planing blade running speed drop – Shortcircuit in rotor
A： Check or replace rotor by repairer
Q：Planer – Planing blade running speed drop – Damage in machinery parts
A： Replace machinery parts by repairer
Q：Planer -Planing blade running speed drop – Low supply voltage
A： Regulate supply voltage
Q：Planer – Excessive sparkling – Ring fire caused by shortcircuit in commutator segment
A： Check or replace rotor by repairer
Q：Planer – Excessive sparkling – Ring fire caused by shortcircuit in rotor winding shortcircuit
A： Check or replace rotor by repairer
Q：Planer – Excessive sparkling – Excessive wearout of carbon brush
A： Replace carbon brush by reparier
Q：Planer – Excessive sparkling – Underpressure in carbon brush spring
A： Replace carbon brush by reparier
Q：Planer – Out of service at switch-on – Disconnection between carbon brush and commutator
A： Check connection between carbon brush and commutator by repairer
Q：Planer – Out of service at switch-on – Loose switching contact
A： Replace switchboard by repairer
Q：Planer – Out of service at switch-on – Novoltage in supply socket
A： Check and repair power supply
Q：Planer – Out of service at switch-on – Wearout of carbon brush
A： Replace carbon brush
Q：Planer – Out of service at switch-on – Disconnection between plug and power socket
A： Put plug in power socket
Q：Planer – Out of service at switch-on – Shortcircuit in electric machine winding
A： Replace stator/rotor by repairer
Q：Sander – Substandard sanding effect – Severe wear in abrasive paper or incorrect selection of abrasive paper
A： Replace abrasive paper
Q：Sander – Excessive machinery vibration – Server wear or damage in eccentric wheel
A： Replace eccentric wheel by repairer
Q：Sander – Excessive machinery vibration – Swing shaft fracture
A： Replace swing shaft by repairer
Q：Sander – No motion at base plate during motor running – Blockup at wheel blade due to rubbing against base plate
A： Repair or replace by repairer
Q：Sander – No motion at base plate during motor running – Eccentric wheel damage
A： Replace eccentric wheel by repairer
Q：Sander – No motion at base plate during motor running – Bearing damage
A： Replace bearing by repairer
Q：Sander – Machine superheating – Unsmooth air outlet
A： Clear up air intake/outlet
Q：Sander – Machine superheating – Electromotor overload
A： Normally operate with reference to specification
Q：Sander – Running speed drop – Shortcircuit in rotor
A： Check or replace rotor by repairer
Q：Sander – Running speed drop – Starting in low speed
A： Regulate to high speed running
Q：Sander – Running speed drop – Damage in machinery parts
A： Replace machinery parts by repairer
Q：Sander – Running speed drop – Low supply voltage
A： Regulate supply voltage
Q：Sander – Excessive sparkling – Ring fire caused by shortcircuit in commutator segment
A： Check or replace rotor by repairer
Q：Sander – Excessive sparkling – Ring fire caused by shortcircuit in rotor winding shortcircuit
A： Check or replace rotor by repairer
Q：Sander – Excessive sparkling – Disconnection between carbon brush and commutator
A： Replace carbon brush by repairer
Q：Sander – Excessive sparkling – Overvoltage in supply power
A： Regulate supply voltage
Q：Sander – Excessive sparkling – Excessive wearout of carbon brush
A： Replace carbon brush by reparier
Q：Sander – Excessive sparkling – Underpressure in carbon brush spring
A： Replace carbon brush by reparier
Q：Sander – Out of service at switch-on – Disconnection between carbon brush and commutator
A： Check connection between carbon brush and commutator by repairer
Q：Sander – Out of service at switch-on – Wearout of carbon brush
A： Replace carbon brush by repairer
Q：Sander – Out of service at switch-on – Loose switching contact
A： Replace switchboard by repairer
Q：Sander – Out of service at switch-on – Novoltage in supply socket
A： Check and repair power supply
Q：Sander – Out of service at switch-on – Disconnection between plug and power socket
A： Put plug in power socket
Q：Sander – Out of service at switch-on – Shortcircuit in motor winding
A： Replace stator/rotor by repairer
Q：Rotary Hammer – No motion of drilling bit during motor running – Clutch gear slippage
A： Replace clutch gear by repairer
Q：Rotary Hammer – No motion of drilling bit during motor running – Gear wheel fracture
A： Replace gear wheel by repairer
Q：Rotary Hammer – No motion of drilling bit during motor running – Rotor tooth fracture
A： Replace rotor by repairer
Q：Rotary Hammer – Failure of mechanical shock motion – Piston connecting rod fracture
A： Replace piston connecting rod by repairer
Q：Rotary Hammer – Failure of mechanical shock motion – Disconnected running of spline shaft or swinging bearing
A： Replace spine shaft or swinging bearing by repairer
Q：Rotary Hammer – Failure of mechanical shock motion – Chock liner gets stuck
A： Repair chock liner by repairer
Q：Rotary Hammer – Failure of mechanical shock motion – Piston fracture or insufficient lubricating oil
A： Replace piston or replenish lubricating oil by repairer
Q：Rotary Hammer – Failure of mechanical shock motion – Wearout of O-shape coil
A： Replace O-shape coil by repairer
Q：Rotary Hammer – Failure of mechanical shock motion – Air cylinder or teleflex damaged
A： Check and replace air cylinder or teleflex by repairer
Q：Rotary Hammer – Gear shifting failure – Shifting fork or bearing damaged
A： Check and replace shifting fork or bearing by repairer
Q：Rotary Hammer – Machine superheating – Insufficient motor cooling
A： Dedust air outlet
Q：Rotary Hammer – Machine superheating – Insufficient lubricating oil or greasy lubricating oil in reduction gearbox
A： Replenish or replace lubricating oil by repairer
Q：Rotary Hammer – Machine superheating – Excessive blunt drilling bit
A： Replace drilling bit
Q：Rotary Hammer – Machine superheating – Electromotor overload
A： Overload protection
Q：Rotary Hammer – Failed to reach rated power – Electrocircuit overload due to lighting device, public utility or other electric appliances
A： No use of public utility or other electric appliances on machine-connected electrocircuit
Q：Rotary Hammer – Excessive sparkling during running – Ring fire caused by shortcircuit in commutator segment
A： Check or replace rotor by repairer
Q：Rotary Hammer – Excessive sparkling during running – Ring fire caused by shortcircuit in rotor winding shortcircuit
A： Check or replace rotor by repairer
Q：Rotary Hammer – Excessive sparkling during running – Disconnection between carbon brush and commutator
A： Replace carbon brush
Q：Rotary Hammer – Excessive sparkling during running – Overvoltage in supply power
A： Regulate supply voltage
Q：Rotary Hammer – Excessive sparkling during running – Excessive wearout of carbon brush
A： Replace carbon brush by reparier
Q：Rotary Hammer – Excessive sparkling during running – Underpressure in carbon brush spring
A： Replace carbon brush by reparier
Q：Rotary Hammer – Sluggish start-up, falling short of running speed – Burnout of switch contact
A： Replace switchboard by repairer
Q：Rotary Hammer – Sluggish start-up, falling short of running speed – Low supply voltage
A： Regulate supply voltage
Q：Rotary Hammer – Sluggish start-up, falling short of running speed – Unsmooth running in mechanical part
A： Check mechanical part by repairer
Q：Demolition Hammer – Bounceback (rammer kicks back piston ring) – Oilway blockup due to improper lubricating oil replacement or excessive adding lubricating oil
A： Replace lubricating oil or moderately draw off lubricating oil
Q：Demolition Hammer – No hammering – Nonstandard lubricating oil
A： Clear up residual oil stain inside oilcan, replace standard lubricating oil with required quantity
Q：Demolition Hammer – No hammering – Oilway blockup due to improper lubricating oil replacement or excessive adding lubricating oil
A： Clear up residual oil stain inside oilcan, replace standard lubricating oil with required quantity
Q：Demolition Hammer – Insufficient hammering – Wearout in piston ring
A： Replace piston ring
Q：Demolition Hammer – Insufficient hammering – Lubricating oil volatilization or failure
A： Replace lubricating oil
Q：Demolition Hammer – Machine superheating – Insufficient motor cooling
A： Dedust air outlet
Q：Demolition Hammer – Machine superheating – Electromotor overload
A： Overload protection
Q：Demolition Hammer – Failed to reach rated power – Electrocircuit overload due to lighting device, public utility or other electric appliances
A： No use of public utility or other electric appliances on machine-connected electrocircuit
Q：Demolition Hammer – Excessive sparkling during running – Disconnection between carbon brush and commutator
A： Replace carbon brush
Q：Demolition Hammer – Excessive sparkling during running – Overvoltage in supply power
A： Regulate supply voltage
Q：Demolition Hammer – Excessive sparkling during running – Ring fire caused by shortcircuit in commutator segment
A： Check or replace rotor by repairer
Q：Demolition Hammer – Excessive sparkling during running – Ring fire caused by shortcircuit in rotor winding shortcircuit
A： Check or replace rotor by repairer
Q：Demolition Hammer – Excessive sparkling during running – Excessive wearout of carbon brush
A： Replace carbon brush by reparier
Q：Demolition Hammer – Excessive sparkling during running – Underpressure in carbon brush spring
A： Replace carbon brush by reparier
Q：Demolition Hammer – Sluggish start-up, falling short of running speed – Low supply voltage
A： Regulate supply voltage
Q：Demolition Hammer – Sluggish start-up, falling short of running speed – Motor damage
A： Replace electric motor by repairer
Q：Demolition Hammer – Sluggish start-up, falling short of running speed – Unsmooth running in mechanical part
A： Check mechanical part by repairer
Q：Rotary Hammer – Out of service – Disconnection between carbon brush and commutator
A： Replace carbon brush
Q：Rotary Hammer – Out of service – Stator wiring disconnection
A： Reconnection by repairer
Q：Rotary Hammer – Out of service – Wearout of carbon brush
A： Replace carbon brush by repairer
Q：Rotary Hammer – Out of service – Burnout of stator or rotor coil
A： Replace stator or rotor by repairer
Q：Rotary Hammer – Out of service – Loose switching contact
A： Replace switchboard by repairer
Q：Rotary Hammer – Out of service – At switch-off
A： Switch on
Q：Rotary Hammer – Out of service – Shortcircuit in power supply
A： Repair and reconnection
Q：Rotary Hammer – Out of service – Disconnection between plug and power socket
A： Put plug in power socket
Q：Demolition Hammer – Out of service – Disconnection between carbon brush and commutator
A： Replace carbon brush
Q：Demolition Hammer – Out of service – Run out of carbon brush
A： Replace carbon brush
Q：Demolition Hammer – Out of service – Stator wiring disconnection
A： Reconnection by repairer
Q：Demolition Hammer – Out of service – Burnout of stator or rotor coil
A： Replace stator or rotor by repairer
Q：Demolition Hammer – Out of service – Loose switching contact
A： Replace switchboard by repairer
Q：Demolition Hammer – Out of service – At switch-off
A： Switch on
Q：Demolition Hammer – Out of service – Shortcircuit in power supply
A： Repair and reconnection
Q：Demolition Hammer – Out of service – Disconnection between plug and power socket
A： Put plug in power socket
Q：Portable Blower – Insufficient air output – Blockup at air intake or air outlet
A： Clear up air intake/outlet
Q：Portable Blower – Insufficient air output – Insufficient motor speed due to undervoltage in service voltage
A： Check service voltage
Q：Portable Blower – Insufficient air output – Incorrect speed adjustment
A： Check and adjust speed regulator
Q：Portable Blower – Insufficient air output – Fan blade damaged
A： Overhaul fan blade by repairer
Q：Portable Blower – Insufficient air output – Running speed drop due to electric machine in abnormal condition
A： Check electric machine by repairer
Q：Portable Blower – Excessive mechanical vibration – Fan blade damaged
A： Replace fan blade by repairer
Q：Portable Blower – Failed to reach rated power – Electrocircuit overload due to lighting device, public utility or other electric appliances
A： No use of public utility or other electric appliances on machine-connected electrocircuit
Q：Portable Blower – Excessive machinery noise – Bearing failure
A： Replace bearing
Q：Portable Blower – Excessive machinery noise – Fan blade damaged
A： Replace fan blade by repairer
Q：Portable Blower – Excessive machinery noise – Electric machine at fault
A： Check electric machine by repairer
Q：Portable Blower – Excessive sparkling during running – Disconnection between carbon brush and commutator
A： Replace carbon brush
Q：Portable Blower – Excessive sparkling during running – Overvoltage in supply power
A： Regulate supply voltage
Q：Portable Blower – Excessive sparkling during running – Ring fire caused by shortcircuit in commutator segment
A： Check or replace rotor by repairer
Q：Portable Blower – Excessive sparkling during running – Ring fire caused by shortcircuit in rotor winding shortcircuit
A： Check or replace rotor by repairer
Q：Portable Blower – Excessive sparkling during running – Excessive wearout of carbon brush
A： Replace carbon brush by reparier
Q：Portable Blower – Excessive sparkling during running – Underpressure in carbon brush spring
A： Replace carbon brush by reparier
Q：Portable Blower – Sluggish start-up of electric motor, falling short of running speed – Burnout of switching contacts
A： Replace switchboard by repairer
Q：Portable Blower – Sluggish start-up of electric motor, falling short of running speed – Low supply voltage
A： Regulate supply voltage
Q：Portable Blower – Sluggish start-up, falling short of running speed – Unsmooth running in mechanical part
A： Check mechanical part by repairer
Q：Portable Blower – Out of service – Disconnection between carbon brush and commutator
A： Replace carbon brush
Q：Portable Blower – Out of service – Stator wiring disconnection
A： Reconnection by repairer
Q：Portable Blower – Out of service – Burnout of stator or rotor coil
A： Replace stator or rotor by repairer
Q：Portable Blower – Out of service – Loose switching contact
A： Replace switchboard by repairer
Q：Portable Blower – Out of service – At switch-off
A： Switch on
Q：Portable Blower – Out of service – Shortcircuit in power supply
A： Repair and reconnection
Q：Portable Blower – Out of service – Disconnection between plug and power socket
A： Put plug in power socket
Q：Mitre Saw – Laser flashlight failure – Laser flashlight damaged
A： Replace laser flashlight by repairer
Q：Mitre Saw – Laser flashlight failure – Transformer damage
A： Replace transformer by repairer
Q：Mitre Saw – Laser flashlight failure – Loose switching contact
A： Replace switchboard by repairer
Q：Mitre Saw – Laser flashlight failure – At switch-off
A： Switch on
Q：Mitre Saw – Laser flashlight failure – Shortcircuit in power supply
A： Repair and reconnection
Q：Mitre Saw – Laser flashlight failure – Disconnection between plug and power socket
A： Put plug in power socket
Q：Mitre Saw – Sawing failure – Rotor tooth or gear wheel damaged
A： Replace gear wheel or rotor
Q：Mitre Saw – Sawing failure – Loose connection between saw blade and clamping screw
A： Screw up clamping screw
Q：Mitre Saw – Sawing failure – Damaged or blunt saw blade
A： Replace saw blade with reference to instruction manual
Q：Mitre Saw – Nonstandard sawing – Improper angular adjustment
A： Angular readjustment
Q：Mitre Saw – Failure in movable guard – Torsional spring failure
A： Replace torsional spring by repairer
Q：Mitre Saw – Failure in movable guard – Sawdust blockup
A： Clear up sawdust
Q：Mitre Saw – Failure in movable guard – Connecting rod distorted
A： Replace movabel guard accessory
Q：Mitre Saw – Not trim alignment – Failure in angular degree indicating needle
A： Regulate angular degree indicating needle by repairer
Q：Mitre Saw – Excessive mechanical vibration – Saw blade damaged or distorted
A： Replace saw blade
Q：Mitre Saw – Excessive mechanical vibration – Improper installation of saw blade
A： Installation with reference to instruction manual
Q：Mitre Saw – Excessive mechanical vibration – Rotor in dynamic imbalance
A： Replace rotor by repairer
Q：Mitre Saw – Machine superheating – Insufficient motor cooling
A： Dedust air outlet
Q：Mitre Saw – Machine superheating – Electromotor overload
A： Overload protection
Q：Mitre Saw – Failed to reach rated power – Electrocircuit overload due to lighting device, public utility or other electric appliances
A： No use of public utility or other electric appliances on machine-connected electrocircuit
Q：Mitre Saw – Excessive machinery noise – Gear tooth noise due to severe wear of gear wheel
A： Replace gear wheel
Q：Mitre Saw – Excessive machinery noise – Excessive sawing noise due to wearout of saw blade
A： Replace saw blade
Q：Mitre Saw – Excessive machinery noise – Electric machine at fault
A： Check electric machine by repairer
Q：Mitre Saw – Excessive sparkling during running – Disconnection between carbon brush and commutator
A： Replace carbon brush
Q：Mitre Saw – Excessive sparkling during running – Overvoltage in supply power
A： Regulate supply voltage
Q：Mitre Saw – Excessive sparkling during running – Ring fire caused by shortcircuit in commutator segment
A： Check or replace rotor by repairer
Q：Mitre Saw – Excessive sparkling during running – Ring fire caused by shortcircuit in rotor winding shortcircuit
A： Check or replace rotor by repairer
Q：Mitre Saw – Excessive sparkling during running – Excessive wearout of carbon brush
A： Replace carbon brush by reparier
Q：Mitre Saw – Excessive sparkling during running – Underpressure in carbon brush spring
A： Replace carbon brush by reparier
Q：Mitre Saw – Sluggish start-up, falling short of running speed – Burnout of switch contact
A： Replace switchboard by repairer
Q：Mitre Saw – Sluggish start-up, falling short of running speed – Low supply voltage
A： Regulate supply voltage
Q：Mitre Saw – Sluggish start-up, falling short of running speed – Unsmooth running in mechanical part
A： Check mechanical part by repairer
Q：Mitre Saw – Out of service – Disconnection between carbon brush and commutator
A： Replace carbon brush
Q：Mitre Saw – Out of service – Stator wiring disconnection
A： Reconnection by repairer
Q：Mitre Saw – Out of service – Burnout of stator or rotor coil
A： Replace stator or rotor by repairer
Q：Mitre Saw – Out of service – Loose switching contact
A： Replace switchboard or reconnect lead wire by repairer
Q：Mitre Saw – Out of service – At switch-off
A： Switch on
Q：Mitre Saw – Out of service – Shortcircuit in power supply
A： Repair and reconnection
Q：Mitre Saw – Out of service – Disconnection between plug and power socket
A： Put plug in power socket
Q：Cut Off Saw – Excessive machinery noise – Improper installation of abrasive disc cutter
A： Reinstall abrasive disc cutter to avoid severe deflective running
Q：Cut Off Saw – Excessive machinery noise – Abrasive disc cutter damaged
A： Replace abrasive disc cutter
Q：Cut Off Saw – Excessive machinery noise – Breakdown in electric motor or gear wheel
A： Check electric motor or gear wheel by repairer
Q：Cut Off Saw – Excessive mechanical vibration – Nonstandard abrasive disc cutter or showing swaying or imbalance
A： Replace qualified abrasive disc cutter
Q：Cut Off Saw – Excessive mechanical vibration – Improper installation of abrasive disc cutter
A： Check and keep clamping plate, abrasive disc cutter and take off shaft in tight engagement
Q：Cut Off Saw – Cutting quality decline – Misuse of unmatched abrasive disc cutter
A： Properly select abrasive disc cutter with reference to raw material
Q：Cut Off Saw – Cutting quality decline – Motor running speed drop
A： Check supply voltage
Q：Cut Off Saw – Cutting quality decline – Improper installation of abrasive disc cutter
A： Reinstall abrasive disc cutter
Q：Cut Off Saw – Cutting quality decline – Beyond the bounds of machine capability
A： No overuse beyond cutting ability
Q：Cut Off Saw – Cutting quality decline – Severe wear in abrasive disc cutter
A： Replace abrasive disc cutter
Q：Cut Off Saw – Cutting quality decline – Nonstandard abrasive disc cutter
A： Replace qualified abrasive disc cutter
Q：Cut Off Saw – Overheating in gearing box – Excessive tight gear engagement or get stuck by foreign material
A： Check gear engagement or remove foreign mateirial by repairer
Q：Cut Off Saw – Overheating in gearing box – Insufficient lubricating oil or smeary lubricating section
A： Replenish lubricating oil or remove foreign material by repairer
Q：Cut Off Saw – No motion of abrasive disc cutter during motor running – Rupture in gear shaft or woodruff key
A： Check gear shaft or woodruff key
Q：Cut Off Saw – Sluggish start-up, falling short of running speed – Unsmooth running in mechanical part
A： Check mechanical part by repairer
Q：Cut Off Saw – Sluggish start-up, falling short of running speed – Brunout of switch contact
A： Replace switchboard by repairer
Q：Cut Off Saw – Sluggish start-up, falling short of running speed – Low supply voltage
A： Regulate to rated voltage
Q：Cut Off Saw – Failed to reach rated power – Electrocircuit overload due to lighting device, public utility or other electric appliances
A： No use of public utility or other electric appliances on machine-connected electrocircuit
Q：Cut Off Saw – Excessive sparkling during running – Ring fire caused by shortcircuit in commutator segment
A： Check or replace rotor by repairer
Q：Cut Off Saw – Excessive sparkling during running – Ring fire caused by shortcircuit in rotor winding shortcircuit
A： Check or replace rotor by repairer
Q：Cut Off Saw – Excessive sparkling during running – Disconnection between carbon brush and commutator
A： Replace carbon brush
Q：Cut Off Saw – Excessive sparkling during running – Overvoltage in supply power
A： Regulate supply voltage
Q：Cut Off Saw – Excessive sparkling during running – Excessive wearout of carbon brush
A： Replace carbon brush by repairer
Q：Cut Off Saw – Excessive sparkling during running – Underpressure in carbon brush spring
A： Replace carbon brush by repairer
Q：Circular Saw – Failure in movable guard – Torsional spring failure
A： Replace torsional spring by repairer
Q：Circular Saw – Failure in movable guard – Sawdust blockup
A： Clear up sawdust
Q：Circular Saw – Laser flashlight failure – Laser flashlight damaged
A： Replace laser flashlight by repairer
Q：Circular Saw – Laser flashlight failure – Transformer damage
A：
Q：Circular Saw – Laser flashlight failure – Loose switching contact
A： Replace switchboard by repairer
Q：Circular Saw – Laser flashlight failure – At switch-off
A： Switch on
Q：Circular Saw – Laser flashlight failure – Shortcircuit in power supply
A： Repair and reconnection
Q：Circular Saw – Laser flashlight failure – Disconnection between plug and power socket
A： Put plug in power socket
Q：Circular Saw – Sawing failure – Rotor tooth or gear wheel
A： Replace gear wheel or rotor
Q：Circular Saw – Sawing failure – Loose connection between saw blade and clamping screw
A： Screw up clamping screw
Q：Circular Saw – Sawing failure – Saw blade damaged
A： Replace saw blade
Q：Circular Saw – Excessive mechanical vibration – Gear wheel or rotor tooth damaged
A： Replace gear wheel or rotor
Q：Circular Saw – Excessive mechanical vibration – Rotor in dynamic imbalance
A： Replace rotor by repairer
Q：Circular Saw – Machine superheating – Insufficient motor cooling
A： Dedust air outlet
Q：Circular Saw – Machine superheating – Electromotor overload
A： Overload protection
Q：Circular Saw – Failed to reach rated power – Electrocircuit overload due to lighting device, public utility or other electric appliances
A： No use of public utility or other electric appliances on machine-connected electrocircuit
Q：Circular Saw – Excessive machinery noise – Gear wheel or rotor tooth damaged
A： Replace gear wheel or rotor
Q：Circular Saw – Excessive machinery noise – Electric motor at fault
A： Check motor by repairer
Q：Circular Saw – Excessive sparkling during running – Disconnection between carbon brush and commutator
A： Replace carbon brush
Q：Circular Saw – Excessive sparkling during running – Overvoltage in supply power
A： Regulate supply voltage
Q：Circular Saw – Excessive sparkling during running – Ring fire caused by shortcircuit in commutator segment
A： Check or replace rotor by repairer
Q：Circular Saw – Excessive sparkling during running – Ring fire caused by shortcircuit in rotor winding shortcircuit
A： Check or replace rotor by repairer
Q：Circular Saw – Excessive sparkling during running – Excessive wearout of carbon brush
A： Replace carbon brush by reparier
Q：Circular Saw – Excessive sparkling during running – Underpressure in carbon brush spring
A： Replace carbon brush by reparier
Q：Circular Saw – Sluggish start-up, falling short of running speed – Burnout of switch contact
A： Replace switchboard by repairer
Q：Circular Saw – Sluggish start-up, falling short of running speed – Low supply voltage
A： Regulate supply voltage
Q：Circular Saw – Sluggish start-up, falling short of running speed – Unsmooth running in mechanical part
A： Check mechanical part by repairer
Q：Table Saw – Difficult to shut down saw blade movable guard – Blockup at movable guard due to sawdust or foreign material
A： Remove sawdust or foreign mateiral
Q：Table Saw – Laser flashlight out of service – Laser flashlight damaged
A： Replace laser flashlight by repairer
Q：Table Saw – Laser flashlight out of service – Loose switching contact
A： Replace switchboard by repairer
Q：Table Saw – Laser flashlight out of service – At switch-off
A： Switch on
Q：Table Saw – Laser flashlight out of service – Running out of charging capacity in accumulator
A： Replace laser flashlight accumulator
Q：Table Saw – Sawdust in splashing during cutting – Blockup at sawdust bleed hole
A： Clear up sawdust bleed hole or keep it connected with dust extractor
Q：Table Saw – Excessive mechanical vibration – Saw blade distorted or damaged
A： Replace saw blade by repairer
Q：Table Saw – Excessive mechanical vibration – Fastening screw in loosening
A： Screw up fastening screw
Q：Table Saw – Excessive mechanical vibration – Improperly setting machine or omitting rubber feet
A： Properly resetting machine or refix rubber feet
Q：Table Saw – Cutting quality decline – Running speed drop
A： Check electric motor and supply voltage
Q：Table Saw – Cutting quality decline – Saw blade unmatched to raw material to be sawed
A： Replace saw blade by repairer
Q：Table Saw – Cutting quality decline – Resin or sawdust on saw blade
A： Remove foreign material
Q：Table Saw – Cutting quality decline – Untrimmed sawnotch due to blunt saw blade
A： Replace saw blade by repairer
Q：Table Saw – Machine overheating – Unsmooth air outlet
A： Clear up air duct and air outlet
Q：Table Saw – Machine overheating – Electromotor overload
A： Operate with reference to instruction manual
Q：Table Saw – Running speed drop – Partial shortcircuit in rotor
A： Check or replace rotor by repairer
Q：Table Saw – Running speed drop – Starting up at low speed
A： Regulate to high speed
Q：Table Saw – Running speed drop – Mechanical part damage
A： Replace mechanical part by repairer
Q：Table Saw – Running speed drop – Decline in supply voltage
A： Check and repair supply power
Q：Table Saw – Excessive sparkling during running – Ring fire caused by shortcircuit in commutator segment
A： Check or replace rotor by repairer
Q：Table Saw – Excessive sparkling during running – Ring fire caused by shortcircuit in rotor winding shortcircuit
A： Check or replace rotor by repairer
Q：Table Saw – Excessive sparkling during running – Disconnection between carbon brush and commutator
A： Replace carbon brush
Q：Table Saw – Excessive sparkling during running – Overvoltage in supply power
A： Regulate supply voltage
Q：Table Saw – Excessive sparkling during running – Excessive wearout of carbon brush
A： Replace carbon brush by reparier
Q：Table Saw – Excessive sparkling during running – Underpressure in carbon brush spring
A： Replace carbon brush by reparier
Q：Table Saw – Out of service at switch-on – Disconnection between carbon brush and commutator
A： Check connection between carbon brush and commutator
Q：Table Saw – Out of service at switch-on -Loose switching contact
A： Replace switchboard by repairer
Q：Table Saw – Out of service at switch-on – Wearout of carbon brush
A： Replace carbon brush by repairer
Q：Table Saw – Out of service at switch-on – No voltage in supply socket
A： Check and repair supply power
Q：Table Saw – Out of service at switch-on – Disconnection between plug and power socket
A： Put plug in power socket
Q：Table Saw – Out of service at switch-on – Shortcircuit in motor winding
A： Replace stator/rotor by repairer
Q：Cut Off Saw – Out of service at switch-on – Disconnection between carbon brush and commutator
A： Check and repair connection between carbon brush and commutator
Q：Cut Off Saw – Out of service at switch-on – Loose switching contact
A： Replace switchboard by repairer
Q：Cut Off Saw – Out of service at switch-on – Wearout of carbon brush
A： Replace carbon brush
Q：Cut Off Saw – Out of service at switch-on – No voltage in supply socket
A： Check and repair supply power
Q：Cut Off Saw – Out of service at switch-on – Disconnection between plug and power socket
A： Put plug in power socket
Q：Cut Off Saw – Out of service at switch-on – Shortcircuit in electric machine winding
A： Replace stator/rotor by repairer
Q：Circular Saw – Out of service – Disconnection between carbon brush and commutator
A： Replace carbon brush
Q：Circular Saw – Out of service – Stator wiring disconnection
A： Reconnection by repairer
Q：Circular Saw – Out of service – Burnout of stator or rotor coil
A： Replace stator or rotor by repairer
Q：Circular Saw – Out of service – Loose switching contact
A： Replace switchboard by repairer
Q：Circular Saw – Out of service – At switch-off
A： Switch on
Q：Circular Saw – Out of service – Shortcircuit in power supply
A： Repair and reconnection
Q：Circular Saw – Out of service – Disconnection between plug and power socket
A： Put plug in power socket
Q：Jig Saw – Laser flashlight failure – Damage in laser flashlight
A： Replace laser flashlight by repairer
Q：Jig Saw – Laser flashlight failure – Transformer damage
A： Replace transformer by repairer
Q：Jig Saw – Laser flashlight failure – Loose switching contact
A： Replace switchboard by repairer
Q：Jig Saw – Laser flashlight failure – At switch-off
A： Switch on
Q：Jig Saw – Laser flashlight failure – Shortcircuit in power supply
A： Repair and reconnection
Q：Jig Saw – Laser flashlight failure – Disconnection between plug and power socket
A： Put plug in power socket
Q：Jig Saw – Failed to assemble sawing blade – Excessive thick sawing blade
A： Replace suitable sawing blade
Q：Jig Saw – Machine superheating – Unsmooth air outlet
A： Clear up air intake/outlet
Q：Jig Saw – Machine superheating – Electromotor overload
A： Normally operate with reference to specification
Q：Jig Saw – Running speed drop – Starting in low speed
A： Regulate to high speed running
Q：Jig Saw – Running speed drop – Shortcircuit in rotor
A： Check or replace rotor by repairer
Q：Jig Saw – Running speed drop – Damage in machinery parts
A： Replace machinery parts by repairer
Q：Jig Saw – Running speed drop – Low supply voltage
A： Regulate supply voltage
Q：Jig Saw – Excessive sparkling – Ring fire caused by shortcircuit in commutator segment
A： Check or replace rotor by repairer
Q：Jig Saw – Excessive sparkling – Disconnection between carbon brush and commutator
A： Replace carbon brush by repairer
Q：Jig Saw – Excessive sparkling – Overvoltage in supply power
A： Regulate supply voltage
Q：Jig Saw – Excessive sparkling – Ring fire caused by shortcircuit in rotor winding shortcircuit
A： Check or replace rotor by repairer
Q：Jig Saw – Excessive sparkling – Excessive wearout of carbon brush
A： Replace carbon brush by reparier
Q：Jig Saw – Excessive sparkling – Underpressure in carbon brush spring
A： Replace carbon brush by reparier
Q：Jig Saw – Out of service at switch-on – Disconnection between carbon brush and commutator
A： Check connection between carbon brush and commutator by repairer
Q：Jig Saw – Out of service at switch-on – Wearout of carbon brush
A： Replace carbon brush by repairer
Q：Jig Saw – Out of service at switch-on – Loose switching contact
A： Replace switchboard by repairer
Q：Jig Saw – Out of service at switch-on – Novoltage in supply socket
A： Check and repair power supply
Q：Jig Saw – Out of service at switch-on – Disconnection between plug and power socket
A： Put plug in power socket
Q：Jig Saw – Out of service at switch-on – Shortcircuit in motor winding
A： Replace stator/rotor by repairer
Q：Marble Cutter – Machine overheating – Motor bearing damage
A： Check or replace bearing by repairer
Q：Marble Cutter – Machine overheating – Overload running
A： Operate with reference to instruction manual
Q：Marble Cutter – Failed to reach full power – Electrocircuit overload due to lighting device, public utility or other electric appliances
A： No use of public utility or other electric appliances on machine-connected electrocircuit
Q：Marble Cutter – Excessive noise during noload running – Motor bearing damage
A： Replace motor bearing by repairer
Q：Marble Cutter – Difficult cutting or cutting quality decline – Unmatched selction of cutting blade
A： Select cutting blade with reference to instruction manual
Q：Marble Cutter – Difficult cutting or cutting quality decline – Improper connection of cooling pipe
A： Reconnect cooling pipe
Q：Marble Cutter – Difficult cutting or cutting quality decline – Running speed drop
A： Check supply voltage
Q：Marble Cutter – Difficult cutting or cutting quality decline – Replace cutting blade
A： Reinstall cutting blade
Q：Marble Cutter – Difficult cutting or cutting quality decline – Excessive blunt cutting blade
A： Replace cutting blade
Q：Marble Cutter – Excessive sparkling during running – Ring fire caused by shortcircuit in commutator segment
A： Check or replace rotor by repairer
Q：Marble Cutter – Excessive sparkling during running – Ring fire caused by shortcircuit in rotor winding shortcircuit
A： Check or replace rotor by repairer
Q：Marble Cutter – Excessive sparkling during running – Excessive wearout of carbon brush
A： Replace carbon brush by reparier
Q：Marble Cutter – Excessive sparkling during running – Underpressure in carbon brush spring
A： Replace carbon brush by reparier
Q：Marble Cutter – Out of service at switch-on – Disconnection between carbon brush and commutator
A： Check connection between carbon brush and commutator
Q：Marble Cutter – Out of service at switch-on – Loose switching contact
A： Replace switchboard by repairer
Q：Marble Cutter – Out of service at switch-on – Novoltage in supply socket
A： Check and repair supply power
Q：Marble Cutter – Out of service at switch-on – Wearout of carbon brush
A： Replace carbon brush by repairer
Q：Marble Cutter – Out of service at switch-on – Disconnection between plug and power socket
A： Put plug in power socket
Q：Marble Cutter – Out of service at switch-on – Shortcircuit in motor winding
A： Replace stator/rotor by repairer
Q：Drill Press – No motion in drill chuck – Disconnection between drill chuck and main drilling spindle
A： Refitting drill chuck
Q：Drill Press – No motion in drill chuck – Wearout of driving belt or belt fracture
A： Replace driving wheel or driving belt
Q：Drill Press – Substandard auger boring quality – Driving blet tensile elongation or running speed drop due to wearout in driving belt
A： Replace driving belt
Q：Drill Press – Substandard auger boring quality – Improper adjustment of driving belt
A： Readjust driving belt
Q：Drill Press – Substandard auger boring quality – Wearout of drilling bit
A： Replace drilling bit
Q：Drill Press – Superheating during running – Excessive tight in belt
A： Properly regulate belt
Q：Drill Press – Superheating during running – Damage in capacitor
A： Replace capacitor by repairer
Q：Drill Press – Superheating during running – Stopover or damage in bearing
A： Replace bearing by repairer
Q：Drill Press – Superheating during running – Bearing overheating due to deficient lubricating oil, excessive thick lubricating oil or bearing full of grease stain
A： Supplement or replace lubricating oil and clean up bearing
Q：Drill Press – Superheating during running – Insufficient motor cooling
A： Dedust electric motor
Q：Drill Press – Superheating during running – Electromotor overload
A： Overload protection
Q：Drill Press – Failed to reach full power – Electrocircuit overload due to lighting device, public utility or other electric appliances
A： No use of public utility or other electric appliances on machine-connected electrocircuit
Q：Drill Press – Excessive running noise – Severe wear in bearing or edge friction in stator/rotor
A： Replace bearing, stator or rotor
Q：Drill Press – Excessive running noise – Stopover in mechanical running gear or damage in bearing
A： Check mechanical part by repairer
Q：Drill Press – Excessive running noise – Electric motor at fault
A： Check motor by repairer
Q：Drill Press – Sluggish start-up of electric motor, falling short of running speed – Low supply voltage
A： Regulate supply voltage
Q：Drill Press – Sluggish start-up of electric motor, falling short of running speed – Capacitor damage
A： Replace capacitor by repairer
Q：Drill Press – Sluggish start-up of electric motor, falling short of running speed – Burnout of switching contacts
A： Repair or replace switchboard by repairer
Q：Drill Press – Sluggish start-up of electric motor, falling short of running speed – Unsmooth running in mechanical part
A： Check mechanical part by repairer
Q：Drill Press – Electric motor out of service – Electric circuit disconnection
A： Check electric circuit connection by repairer
Q：Drill Press – Electric motor out of service – Tripout due to improper closing of movable guard
A： Shut down movable guard again
Q：Drill Press – Electric motor out of service – Stator wiring disconnection
A： Reconnection by repairer
Q：Drill Press – Electric motor out of service – Burnout of stator coil
A： Replace stator by repairer
Q：Drill Press – Electric motor out of service – Loose switching contact
A： Replace switchboard by repairer
Q：Drill Press – Electric motor out of service – At switch-off
A： Switch on
Q：Drill Press – Electric motor out of service – Shortcircuit in power supply
A： Repair and reconnection
Q：Drill Press – Electric motor out of service – Disconnection between plug and power socket
A： Put plug in power socket