Instruction manual
5 MAINTENANCE
5.1 Safety
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.
•
A suitably trained and supervised technician must maintain the DP180.
•
Ensure that the maintenance technician is familiar with the safety procedures which relate to
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 DP180 to cool to a safe temperature before you start maintenance work.
•
Vent and purge the pumping system with nitrogen before you start any maintenance work.
• Isolate the DP180 and other components in the pumping system from the electrical supply so
that they can not be operated accidentally.
• Recheck the direction of pump rotation if the electrical supply has been disconnected.
• Do not reuse 'O' rings and Co-Seals.
• Dispose of components, grease and oil safely (see Section 6.2).
• Take care to protect sealing-faces from damage.
• Do not touch or inhale the thermal breakdown products of fluorinated materials which may
be present if the DP180 has been overheated to 260
o
C and above. These breakdown
products are very dangerous. Fluorinated materials in the DP180 may include oils, greases
and seals. The DP180 may have overheated if it was misused, if it malfunctioned, or if it was
in a fire. BOC Edwards Materials Safety Data Sheets for fluorinated materials used in the
DP180 are available on request: contact your supplier or BOC Edwards.
•
Leak-test the system after maintenance is complete if you have disconnected any vacuum or
exhaust joints and seal any leaks found (refer to Section 3.11).
5.2 Maintenance plan
The plan shown in Table 4 details the maintenance operations necessary to maintain the DP180
in normal operation. Instructions for each operation are given in the section shown.
More frequent maintenance may be required if the DP180 is used to process corrosive or abrasive
gases and vapours. If necessary, adjust the maintenance plan according to your experience.
When you maintain the DP180, use BOC Edwards service kits. These kits contain all of the
necessary components to complete maintenance operations. The Item Numbers of the service
kits are given in Section 7.3.
22 DP180 Dry Vacuum Pump