© Edwards Limited 2012. All rights reserved.
Page 33
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MAINTENANCE
A750-04-880 Issue F
5.5
Calibrate the ATEX safety devices: ATEX Category 1 and 2
pumps
You must calibrate the ATEX safety devices in your system every year, to ensure that the devices will operate
correctly. Calibrate the devices as described in the manufacturer’s instructions supplied with the devices.
5.6
Replenish the bearings with grease
For each bearing on the pump:
1. Use a suitable filling device to replenish the bearings with new grease. (As you force in new grease, old grease
and/or excess grease will be forced out of a bearing vent next to the grease point.)
2. Wipe away any grease from the bearing grease point and the vent.
You must use a high quality lithium-based grease according to DIN51825 K2K-30. Refer to the documentation pack
supplied with your pump for the locations of the grease points and bearing vents on the pump.
5.7
Overhaul the pump
ATEX Category 1, 2 and 3 pumps
must
be overhauled every three years, and the bearings in the pump
must
be
replaced as part of the overhaul.
Pump overhaul must be carried out at a Edwards Service Centre. Contact your supplier or your nearest Edwards
company to arrange for the overhaul.
5.8
Fault finding
A guide to fault conditions and their possible causes is provided in
to assist you in basic fault finding.
If you are unable to rectify a fault when you use this guide, call your supplier or your nearest Edwards Service Centre
for advice.
WARNING
You must regularly check the ATEX safety devices for correct operation as described below. If you
do not, the ATEX certification of your system will not be valid
