SCHEPPACH HD12 trouble starting

[Nick S]

Hi everyone has anybody had problems with a scheppach HD12 it some times or fairly often just buzzes if you turn off and remove suction pipe give blade a push with bit wood either way then start it jumps into life .
Is there anywhere to lubricate may be nothing in manual !
Any help greatly received
Nick

 

[sawtooth-9]

Hi everyone has anybody had problems with a scheppach HD12 it some times or fairly often just buzzes if you turn off and remove suction pipe give blade a push with bit wood either way then start it jumps into life .
Is there anywhere to lubricate may be nothing in manual !
Any help greatly received
Nick

Assuming the machine can turn freely ...

Is this a single phase ( 240 volt ) machine ?
If so, sounds like a start capacitor issue - simple fix, replace the motor capacitor .Cheap and easy - and it's the most likely cause.

If its a three phase ( 415 volt ) machine -
If there is a DOL starter, it might be that the contactor is only bringing in two phases. The motor may not start - especially under any load conditions - but would run once the motor is turning. If so, replace the DOL
It might be worth checking the resistance between each phase and checking the winding insulation ( using a mega ) i.e resistance between each phase and earth. This would normally show up any major motor problem.

Usually machine tools have sufficient power to overcome any minor lack of lubrication and you would probably hear the machine "complain" before you had a motor issue.

 

[Nick S]

Assuming the machine can turn freely ...

Is this a single phase ( 240 volt ) machine ?
If so, sounds like a start capacitor issue - simple fix, replace the motor capacitor .Cheap and easy - and it's the most likely cause.

If its a three phase ( 415 volt ) machine -
If there is a DOL starter, it might be that the contactor is only bringing in two phases. The motor may not start - especially under any load conditions - but would run once the motor is turning. If so, replace the DOL
It might be worth checking the resistance between each phase and checking the winding insulation ( using a mega ) i.e resistance between each phase and earth. This would normally show up any major motor problem.

Usually machine tools have sufficient power to overcome any minor lack of lubrication and you would probably hear the machine "complain" before you had a motor issue.

Single phase 240 v
Thanks will look in to a new capacitor

 

[rogxwhit]

Should be sited on or very near the motor - even within the terminal box on the motor. There could even be two, one for start & one for run & you'll have to distinguish between them. They should be stamped with their ratings and you can read those off to source a new one - they are generic items and you don't necessarily have to go to through the 'official' spares route but just approach an electrical supplier, just check the physical size if it has to fit inside something.

You will have disconnected the power!!! Note down the connection points before you undo the capacitor and wire the new one to the same terminals ... sometimes life is easy ...