15
V20 Edition: 12 March
·
2019
Operating Manual DUM/F6-Servomotors
Maintenance
Repairs may only be carried out by the manufacturer or an authorised repair agency. Unauthorised opening
and tampering may lead to injuries to persons and property and may lead to a loss of warranty rights.
Before starting any work on the motors, and particularly before opening any covers of active parts, make sure that the
motor and plant have been properly isolated.
This refers also to any additional or auxiliary circuits.
The " 5 safety rules" to be applied according to DINVDE0105 are:
•
Disconnect the motor.
•
Lock it against unintentional restarting.
•
Verify the safe isolation from supply.
•
Earth and short (with voltages above 1,000V).
•
Safeguard or cover adjacent live parts.
Safety instructions
Careful and regular maintenance and inspections are required to recognise and remedy troubles in good time, before they
lead to major damage.
Since the operating conditions of the motors differ considerably, only general maintenance intervals to ensure trouble-free
operation can be specified. They need to be adapted to the local conditions such as the actual level of contamination, num-
ber of starts, load, etc.
•
Clean the motor, depending on the local level of contamination.
•
Retighten the electrical and mechanical connections. Check for deterioration of running smoothness or bearing noise:
after approx. 500 operating hours, but after 1 year at the latest.
•
With rotary shaft seal option only: Regrease the rotary shaft seal depending on the operating mode every 50 to 500
operating hours (applies only to grease lubrication!).
Maintenance intervals
If the motors are not installed immediately after their arrival, they should be properly stored.
Store the motors only in closed, dry, dust-free, well-ventilated and vibration-free rooms. Damp rooms are unsuitable for
storage! Do not remove the anti-corrosive coat from the shaft ends, flange surfaces, etc. Check it at certain intervals
depending on the ambient conditions, and touch up, if required.
Take care that no vibrations occur in storage to prevent the anti-friction bearings from being damaged. It is advisable to
turn the rotor several times at certain intervals to prevent corrosion of the bearings.
After prolonged storage (>3 months), rotate the motor in both directions at a low speed (
£
100 min
-1
) to allow the grease to
distribute evenly in the bearings.
Storage
