NOTICE:
If we do not receive a completed HS2 form, your equipment cannot be serviced.
9.2 Maintenance intervals
Standard maintenance activities are listed below. These activities are given for standard
operating conditions and may differ depending on the harshness of your application.
Therefore the maintenance plan might need to be adapted to your process conditions. If in
doubt, please contact Edwards for any further advice.
Table 6 Maintenance intervals
Service work
Interval
Check the oil level and top-up if required
1 week
Check the cooling-water level and top-up if
required
1 week (only air cooled versions)
Check the purge gas supply pressure and hoses
6 months
Check the water hoses
6 months
Drain and replace oil
1 year
Drain and replace coolant
1 year (only air cooled versions)
Remove and clean water pump
1 year (only air cooled versions)
Replace blow-off valve
1 year
Clean the heat exchanger
1 year (only air cooled versions)
Complete overhaul in Edwards service centre
4 years or 32,000 operating hours
Leak check the entire pump system
after all maintenance and assembly work and upon
request
9.3 Checking the oil
WARNING: RISK OF BURNS
Before removing the oil-drain or oil-fill plug always switch off the pump first and vent to
atmospheric pressure. When the pump has become warm during operation the casing
and the oil temperature may exceed 80 °C. Leave the pump to cool down. Always wear
protective gloves also to protect yourself against aggressive residues in the oil
The oil-level should be between the bottom and top of the glass for a non-operating pump.
When the pump is operating the oil-level is slightly lower than in a static condition.
If the oil shows any significant change in normal colour consider an oil change and contact
Edwards.
Make sure to use the right kind of oil, see
(on page 16). Only use Edwards oil.
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A41802880_C - Maintenance
