Service And Maintenance; Maintenance; Replacing The Brake And Rotor - Danfoss VLT OneGearDrive Operating Instructions Manual

Service and Maintenance

4 Service and Maintenance
WARNING
HIGH VOLTAGE
Potentially lethal voltage is present on the connectors.
Before working on the power connectors (disconnecting or
4 4
connecting the cable), disconnect the power supply
module from the mains and wait for the discharge time to
elapse.
WARNING
DISCHARGE TIME
The DC link capacitors remain charged for some time after
the mains supply is switched off.
To avoid electrical shock, fully disconnect the VLT
OneGearDrive from the mains before carrying out
maintenance. Wait for at least 10 minutes before carrying
out maintenance work.

4.1 Maintenance

To prevent breakdown, danger, and damage, examine the
drive units at regular intervals depending on the operating
conditions. Replace worn or damaged parts using original
spare parts or standard parts.
®
The VLT OneGearDrives are largely maintenance free.
The maintenance tasks listed in Table 4.1 may be
performed by the customer. No other tasks are required.
16
®
VLT OneGearDrive Operating Instructions
Component
®
VLT
OneGearDrive
Protective
coating
Hollow shaft
seal (stainless
steel shaft)
®
Hollow shaft
seal (mild steel
shaft)
Oil
Table 4.1 Overview of Maintenance Tasks

4.1.1 Replacing the Brake and Rotor

All work can only be carried out by qualified technical
personnel on a stationary machine, which has been
protected against restarting. This also applies to auxiliary
circuits.
®
MG75C302 - VLT is a registered Danfoss trademark
Maintenance Maintenance Instruction
task interval
Check for Every 6 Contact Danfoss
abnormal months Service
noise and
vibration
Check for Every 6 Repair damage
damage months using the
Danfoss Paint
Repair Set
Check the Every 6 If damaged
condition and months replace with a
check for Viton seal
leakage
Check the Every 6 If damaged
condition and months replace with an
check for EPDM seal
leakage
Change the oil Standard oil: See
after 25000 4.4.4 Changing
operating the Oil
hours
Food grade
oil: after
35000
operating
hours
Check for oil Every 12 Replace the
leakage on months
VLT
gear and
OneGearDrive
motor housing
®