BOC Edwards iH600 - 3.20 Commission the iH System

5. Inspect the water hoses, pipelines and connections and check that there are no leaks.
6. Turn off the water supply while you complete the remainder of the installation procedures.
3.19 Adjust the interstage purge flow rates if necessary
The 2/3-interstage purge and 3/4-interstage purge flow rates are preset for correct operation.
If necessary, these purge flow rates can be adjusted: contact your supplier or BOC Edwards
for advice.
3.20 Commission the iH system
WARNING
Do not operate the iH system with the exhaust pipeline blocked. If the exhaust
pipeline is blocked, the iH system can generate exhaust pipeline pressures up
to 7 bar (7 x 10
5
Pa).
WARNING
Do not operate the iH system with any enclosure panels removed and do not
touch any parts of the pump(s) when the iH system is on. Surfaces of the
pump(s) are very hot and can cause injury to people.
3.20.1 Switch on an iH80/iH1000 system
Note: Operation of the iH system with high inlet pressure may result in shaft-seal pressure warnings
(refer to Table 6-1): the operation of the iH system will not be affected, and you can ignore these
warnings.
1. Switch on the external electrical supply and check that the power ok LED (Figure 1-7, item 7)
goes on. If the LED does not go on, refer to Section 6 to determine the cause of the fault.
2. Switch on the cooling-water and nitrogen supplies.
3. Ensure that the exhaust-extraction system is not blocked (for example, that valves in the
exhaust-extraction system are open).
4. Ensure that all openings to atmospheric pressure in the foreline vacuum system are closed,
then switch on the iH system.
5. If the iH system starts and continues to operate, continue at Step 6. If a warning or alarm
condition is indicated (for example, a warning or alarm message is shown on the Pump
Display Terminal):
•
Shut down the iH system: refer to Section 5.10.
iH Dry Pumping Systems 3-29