SEW eurodrive Electric Motor DRN80M4

8.1 Inspection and maintenance intervals

Ensure the following safety precautions are taken

Inspect the following brake components

BMG02 Brake Inspection (Sec. 8.4)

Isolate the motor and brake from the supply

Unscrew the hand lever, remove the fan guard and the fan

Loosen screws and remove the complete brake with the releasing lever

Measure the thickness 'd' of the brake disk

Is the brake disk thickness above the minimum value?

Altering the blocking direction on motors with a backstop

Note the direction of rotation and number of stages

Operate the backstop at half motor voltage for checking purposes

Isolate the motor from the supply

Remove fan guard and fan, unscrew hexagon socket head cap screws

Remove the V-ring and sealing flange with felt ring

Remove the circlip; for DV132M-160M, also remove the equalizing rings

Pull the carrier and wedge element train completely off, turn them by 180° and press them back on

8.1 Inspection and maintenance intervals

Use only genuine spare parts in accordance with the valid parts list

Install a new brake control system when replacing the brake coil

Ensure motors are not hot to avoid burns

Secure hoist drives or lower them to prevent falling

Isolate the motor and brake from the supply to prevent unintentional power-up

Brake types applicable for inspection

Document the calculated inspection/maintenance intervals based on project planning documents

8.1 Inspection and maintenance intervals

Isolate the motor and brake from the supply before starting work, safeguarding them against unintentional power-up

8.3 Inspection / maintenance on the motor

Remove the forced cooling fan and encoder, if installed

Remove flange or fan guard, fan

Remove the hex head bolt from the drive end bearing end shield and the non-drive end bearing end shield, release the stator from the drive end bearing end shield

For motors with BM/BMG brake: open the terminal box cover, unfasten the brake cable from the rectifier; push the non-drive end bearing end shield and the brake off the stator and carefully lift them off

For motors with BMG02, BR03 brake: remove the complete brake with the releasing lever

Changing the braking torque for BR03 brake

Isolate the motor and brake from the supply, safeguarding them against unintentional power-up

Unscrew the hand lever, remove the fan guard and the fan

Loosen the screws and remove the complete brake with the releasing lever

Loosen the screws and remove the guide ring with friction plate, brake disc, pressure plate and damping plate

Remove the brake springs from the brake coil body and replace them with new ones

Position the new brake springs symmetrically

Slide the damping plate over the two studs attached to the pressure plate so the embossing pattern is located with the projecting side facing the pressure plate

Place the pressure plate on the brake springs together with the damping plate; guide the studs attached to the pressure plate through the holes in the brake coil body and ensure correct positioning