Hydraulic Problems - Bomar Workline 410.280 DG Operating Instructions Manual

5.3.

Hydraulic problems

Problem
1. Hydrogenerator not •
supplying oil
•
•
•
•
2. Hydraulic oil •
contains bubbles
•
•
3. Increased •
mechanical noise
•
•
4. Low pressure, •
pump supplies oil
•
•
5. Hydrogenerator is •
seized
•
•
•
6. Overheating oil •
•
7. Hydraulic valve can •
not be readjusted
•
•
Possible causes
reverse rotation
shortage of oil in the tank
Oil viscosity does not correspond
prescribed viscosity value
Hydrogenerator malfunction
Wrong power supply connection.
Hydraulic circuit is not adequately
deaerated
Low oil level
the pump shaft seals damaged
damaged joint drive
damaged or destroyed motor bearings
air intake
problem in the safety valve
pump wear
external or internal leakage
damage by solid particles in oil
non-prescribed oil
wrong type of oil
exceeding the life of the pump
cooler malfunction
wear the pump, the energy is converted
into heat
electromagnet has no signal (voltage) -
interrupted supply lines
Electromagnet coil burnt
spool valve sticking
Repair
Check the connections of each phase.
Reconnect properly connection of the
electrical phases.
Add hydraulic oil
Change hydraulic oil.
Call service
Check the connections of each phase.
Reconnect properly connection of the
electrical phases.
Make deaeration of hydraulic circuit.
Add hydraulic oil
Call service
Call service
Call service
Check for leaks.
Wrong settings. Check the settings
and adjust the safety valve.
Call service
Call service
Make oil filtration, or call the service.
Change hydraulic oil.
Change hydraulic oil.
Call service
Check the cooler function or call
service.
Call service
Check again.
Replace coil – Call service.
Replace valve – Call service
61