Pneumatech HTM02-01, Operation And Maintenance Manual

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Installation, Operation and Maintenance Manual
Page 54 Medical Vacuum Plant
5. Motor tripped:
The motor draws more current (for several seconds) than the value set in the overload protection.
This fault will always stop the pump and hence requires immediate attention.
Taking into account the precautions of chapter Maintenance warnings, open the corresponding
cubicle and verify if the overload setting is according to the recommendation of chapter Fuse
values.
If so, verify that the supply matches the required v/-10%. A voltage dip or current surge
may have occurred. If the supply is adequate, verify that all connections between cubicle and
motor are in order and attached correctly (see service diagram).
If so, verify that the pump is maintained as required by chapter Checks and intervals in terms of
e.g. oil and filter replacements and inspect the pump for any defaults or blockages.
If no cause can be established, please contact Pneumatech MGS.
After fixing the problem, press the Reset button on the overload protection inside the cubicle (see
picture), close the cubicle and switch On the isolating switch. Press the Escape button (see
Interface icons and menu structure to clear the display. Verify that the pump runs without
problems for 10 minutes at least (e.g. by testing with JOG function, see Pump controller
operation).
8.4.3
Plant Emergency
Description
The net pressure exceeds -600 mbar(e) (-450 mmHg).
Evidently, this situation must be attended to as soon as possible.
Figure 8-36; Controller alarms and faults – Plant Emergency