Edwards EXT200/200H GCMS, Инструкция по эксплуатации, Страница: 30 / 38

B756-01-880 Issue K
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Maintenance
5.4 Cleaning the pump
CAUTION
Do not attempt to clean any parts of the EXT Split Flow pumps other than the external surfaces. Organic solvents
may damage internal pump components. Do not use abrasive materials to clean any part of the pump.
If the inside of the EXT Split Flow pumps is contaminated, it may not be possible to achieve the specified ultimate
vacuum, or pump-down time may increase. In these circumstances, the pump must be returned to an Edwards Service
Centre, where the pump will be dismantled and cleaned. Use the procedure given in the forms at the end of this
manual to return the pump.
Use a cleaning solution which is suitable for the contaminants in the pump. Any organic solvent can be used to clean
the external surfaces of the pump. Edwards recommends the use of non-CFC solvents, such as isopropanol or ethanol.
For environmental reasons, keep wastage of cleaning solutions and solvents to a minimum.
5.5 Fault finding
Refer to Table 7 for the possible causes of faults and for the recommended actions to rectify faults. Table 7 is
applicable to a basic, manually controlled pumping system with an EXC Controller configured for local (manual)
operation.
Note that if an EXDC Pump Drive Module is used to control the EXT Split Flow Pump, or if an EXC Controller configured
for remote operation is used to control the EXT Split Flow Pump, some of the checks and actions in
Table 7 may not
apply to the system. Refer to the fault finding section of the instruction manual supplied with the EXDC Pump Drive
Module or EXC Controller for further fault finding information.
WARNING
Clean the external surfaces of the EXT Split Flow pumps in a well-ventilated location. When using
cleaning solutions and solvents to clean the pump, observe all precautions specified by the
manufacturer. Avoid inhalation of any particulates which may be present in the pump.