Edwards 30B5M, Instruction Manual, Page: 35 / 50

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Maintenance
B064-04-880 Issue F
5 Maintenance
5.1 Safety

A suitably trained and supervised technician must maintain the pump.

Isolate the pump from the electrical supply and your vacuum system before you start maintenance.

Ensure that the maintenance technician is familiar with the safety procedures which relate to the pump fluid
and the products pumped. Wear the appropriate safety-clothing when you come into contact with
contaminated components. Dismantle and clean contaminated components inside a fume-cupboard.

Allow the pump to cool for at least three hours before you touch any part of the pump.

Allow the pump boiler to cool to 100 ºC before you turn off the cooling-water supply.

Do not remove the dipstick or open the drain-plug to vent the pump while the pump is operating or under
vacuum.

Do not touch or inhale the thermal breakdown products of fluorinated materials which may be present if the
pump has been overheated to 315 ºC and above. These breakdown products are very dangerous. Fluorinated
materials in the pump include seals and 'O' rings. The pump may have overheated if it was misused, if it
malfunctioned, or if it was in a fire. Edwards Material Safety Data Sheets for fluorinated materials used in
the pump are available on request: contact your supplier or Edwards.

Do not use abrasive or reactive chemical substances to clean the pump.

Do not use solvents to clean 'O' rings.
5.2 Maintenance plan
The plan shown in Table 3 lists the maintenance operations necessary to maintain the 30B5M pump in normal use.
Instructions for each operation are given in the section shown.
More frequent maintenance may be required if the pump has been used to process corrosive or abrasive gases and
vapours. If necessary, adjust the maintenance plan according to your experience.
WARNING
Obey the safety instructions given below and take note of appropriate precautions. If you do not,
you can cause injury to people and damage to equipment.
WARNING
Regular oil level checks should be carried out Low oil level could cause the pump to overheat and
the boiler to implode. Ensure the thermal trips are connected correctly.
Table 3 - Maintenance plan
Operation Frequency Refer to Section
Check the pump fluid-level Weekly 5.3
Clean the fluid-return pipes and boiler As required 5.4
Inspect the pump fluid (drain if necessary) As required 5.5
Inspect and clean the pump Monthly 5.6
Replace a heater As required 5.7