SEW eurodrive Electric Motor DRN90L4

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

8.2 Preliminary work for motor and brake maintenance

Ensure motor and brake are isolated from power supply

Remove incremental encoder ES1. / ES2. / EH1.

Remove the proximity sensor NV1. / NV2.

Before startup, ensure the following conditions are met

During startup, ensure the following conditions are met

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

Calculate required inspection/maintenance intervals based on project planning documents

8.1 Inspection and maintenance intervals

Change the low-viscosity grease in the backstop every 10,000 hours of operation for motors with a backstop

8.3 Inspection / maintenance on the motor — Lubrication of the backstop

Verify the grease type and specifications

Enter the temperature range for the grease

Select the motor type to determine the amount of grease required