5.6 Start-up
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.
WARNING
Ensure that it is safe to start the iH system. If you do not (and, for example,
maintenance is being performed on components downstream of the iH
system), you could cause injury to people.
Notes: When you use the Pump Display Terminal to start up the iH system, we recommend that you do
not disconnect the Terminal from the iH system; if you do, you will not be able to use the Terminal
to instantly shut down the iH system: see Section 5.5.
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.
Use the following procedure to start up the iH system:
1. Switch on the cooling-water supply, the nitrogen supply and the external electrical supply
(if not already on).
2. Ensure that the exhaust-extraction system is not blocked and that valves in the
exhaust-extraction system are open.
3. Ensure that the Pump Display Terminal has control of the iH system: refer to Section 5.5.
4. Refer to Figure 4-1. Look at the display (2) on the Pump Display Terminal:
•
If there are any warnings or alarms, take the necessary corrective action (refer to Section 6);
do not start the iH system.
•
If there are no alarms or warnings displayed, use the Switch On menu to switch on the iH
system.
When you switch on, the following actions will occur (with a small time delay between each
action):
•
The LED on the On button on the Pump Display Terminal will start to flash.
•
The HCDP pump will be switched on.
•
The LED on the On button on the Pump Display Terminal will stay permanently on.
5-6 iH Dry Pumping Systems
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