A705-61-880 Issue M
Page 42 © Edwards Limited 2012. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Maintenance
5.13.2 Relubrication intervals
The required interval between motor bearing relubrication depends on a number of factors, such as ambient
temperature and so on. To determine the required intervals between relubrication:
Refer to Table 15 which provides general guidelines on the required interval between relubrication.
Refer also to the nameplate on the motor for relubrication intervals and grease quantities specific to
that motor.
Note: The data given in Table 15 is for an ambient temperature of 25 °C (77 °F). If the pump is operated in an
ambient temperature of 40 °C (104 °F), the required relubrication intervals will be 50% of those shown
in the table.
5.14 Replace the motor bearings
You must only replace the motor bearings if you have been suitably trained in all the procedures required to
dismantle and reassemble the motor, and to replace the bearings.
Take note of the following when you replace the motor bearings:
You will need a Motor bearing kit: refer to Section 7.3.
Use the procedures in this manual to remove and refit the motor.
Only use approved procedures to dismantle and reassemble the motor, and to replace the bearings.
5.15 Overhaul the pump
We recommend that the pump is given a major overhaul every three years. Such an overhaul is outside the scope of
this manual and should be done by qualified Edwards service personnel: contact your supplier or Edwards.
Table 14 - Motor relubrication grease required
Pump
Quantity of grease required
Non-drive end bearing Drive end bearing
GV250, 380/400/415 V, 50 Hz 12 c.c. 12 c.c.
GV250, 230/460 V, 60 Hz 0.2 fluid oz 0.6 fluid oz
GV400, 380/400/415 V, 50 Hz 12 c.c. 12 c.c.
GV400, 230/460 V, 60 Hz 0.4 fluid oz 0.6 fluid oz
Table 15 - Motor bearing relubrication intervals
Pump Relubrication interval (hours of operation)
GV250, 380/400/415 V, 50 Hz 7200
GV250, 230/460 V, 60 Hz 4400
GV400, 380/400/415 V, 50 Hz 7200
GV400, 230/460 V, 60 Hz 4400
Do not replace the motor bearings unless you have been suitably trained in the necessary
procedures. If you are not suitably trained, you may damage the motor and it may not operate
correctly or safely.
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