1.11 Controls and indicators
Refer to Figure 1-7. The controls and indicators on the dashboard of the iH system are as
follows:
Emergency stop switch (1) Press this to immediately shut down the iH system in an
emergency: refer to Section 5.12.
Pump Display Terminal (2) Use this to control the iH system: refer to Section 1.13.
Shaft-seal purge pressure
warning LED (3)
This yellow LED is on when the shaft-seals purge
nitrogen pressure is too high or too low.
Nitrogen supply pressure
regulator (4)
Use this to adjust the nitrogen supply pressure.
Shaft-seal purge pressure
high and low LEDs (5, 6)
These green LEDs are both on when the shaft-seals
purge nitrogen pressure is acceptable. The pressure
high LED (5) is off when the pressure is too low, and the
pressure low LED (6) is off when the pressure is too
high.
Power OK LED (7) This green LED is on when the 24 V electrical supply to
the Electronics Module is on.
Running LED (8) This green LED is on when the iH pumps are operating.
Alarm LED (9) This red LED is on when an alarm condition exists: see
Section 1.12.
Warning LED (10) This yellow LED is on when a warning condition exists:
see Section 1.12.
1-18 iH Dry Pumping Systems
Figure 1-6 - Electrical components: key
A iH80 Electrics Box detail
1. HCMB pump *
2. Inverter enclosure ▲
3. HCMB pump-motor terminal-box *
4. IH600/iH1000 Electrics Box
5. HCDP pump-motor terminal-box
6. Not Used
7. HCDP pump shut-down thermistor
8. HCDP pump water flow-switch
9. Gas Module
10. iH80 Electrics Box
11. HCDP pump-body temperature sensor
* iH600/iH1000 only
B iH600/iH1000 Electrics Box detail
12. HCDP pump
13. Electronics Module
14. HCMB pump-motor *
15. HCMB pump temperature sensor *
16. HCMB Pressure Relief Valve *
17. Electrics and Control Loom
18. HCDP pump electrical supply cable
19. HCDP pump-motor thermistor cable
20. Not used
21. HCMB pump-motor thermistor cable *
22. HCMB pump electrical supply cable (iH600) *
or inverter electrical supply cable (iH1000)
▲
▲ iH1000 only
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