Edwards ELD500 Series

D135-10-880C - Maintenance
Page 87
Maintenance
Safety information
Maintenance intervals
Maintenance work should be done on the ELD500 as required. This work will normally be
limited to exchanging the oil in the wet pump of the ELD500 WET and the built in air and oil
filters.
As a preventive measure it is recommended to check the wet pump once a month. Here note
should be taken of the oil level and the colour of the oil.
Only synthetic oil (L31001) must be used in the wet pump in the ELD500 WET.
The monthly interval for the check is just a nominal period. If the ELD500 WET is used heavily,
in particular in sniffer mode, then this check should be performed more frequently. The
rotary vane pump is located on the side of the mechanical section at the bottom of the leak
detector.
Service
When equipment is returned, indicate whether the equipment is contaminated or is free of
substances which could pose a health hazard. If it is contaminated, specify exactly which
substances are involved. The form supplied for this purpose must be filled out.
A copy of this form has been reproduced at the end of these Operating Instructions:
Declaration of contamination for Compressors, Vacuum pumps and Components.
Attach the form to the equipment or enclose it with the equipment.
This statement detailing the type of contamination is required to satisfy legal requirements
and for the protection of our employees.
We must return to the sender any equipment which is not accompanied by a contamination
statement.
Before shipping fit the yellow screw-on seals on to the connections EXHAUST and GAS
BALLAST.
WARNING:
During all maintenance and connection work, make sure that the mains cable have been
reliable disconnected and do not carry a mains voltage.The leak detector must only be
used in with the hoods closed. The electrical connections must only be provided by a
trained electrician as specified, for example, by the regulations EN 50110-1.