SEW eurodrive Electric Motor DT80N4

8.2 Preliminary work for motor and brake maintenance

Isolate the motor and brake from the power supply before starting work

Remove the EV1. incremental encoder / AV1H absolute encoder

Remove incremental encoder ES1. / ES2. / EH1.

Remove the proximity sensor NV1. / NV2.

8.1 Inspection and maintenance intervals

Change the low-viscosity grease in the backstop

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

Does the grease comply with NLGI class 00/000 and have a base oil viscosity of 42 mm/s at 40 °C?

Is the grease suitable for the temperature range of -50 °C to +90 °C?

Select the motor type for lubrication

Enter the amount of grease required (in grams)

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

6.2 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 and equalizing rings if applicable

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

Before startup, ensure the following conditions are met

During startup, ensure the following conditions are met