6
MAINTENANCE
6.1
Safety
6.1.1
General requirements
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 iL system.
•
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 and drain
oil inside a fume-cupboard.
•
Allow the pump to cool to a safe temperature before you start maintenance work.
•
Vent and purge the iL system with nitrogen before you start any maintenance work: refer to
Section 6.1.2.
•
Isolate the iL system and other components in the process system from the electrical supply
so that they can not be operated accidentally. Note that the emergency stop switch on the iL
system is not an electrical isolator. (Note however that you must operate the iL system to
purge the pump: refer to Section 6.1.2).
•
Recheck the pump rotation direction if the electrical supply has been disconnected.
•
Do not reuse 'O' rings.
•
Dispose of components, grease and oil safely (see Section 7.2).
•
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 iL system has been overheated to 260
o
C and above. These breakdown
products are very dangerous. Fluorinated materials in the iL system may include oils,
greases, seals and rotor coatings. The iL system may have overheated if it was misused, if it
malfunctioned or if it was in a fire. BOC Edwards Material Safety Data Sheets for fluorinated
materials used in the iL system are available on request: contact your supplier or BOC
Edwards.
•
Leak-test the system after maintenance work is complete if you have connected or
disconnected any vacuum or exhaust joints; seal any leaks found.
iL Dry Pumping Systems
6-1
