DH Instruments ADCS-601, Operation And Maintenance Manual

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6. GENERAL MAINTENANCE AND ADJUSTMENTS
Page 133 © 2005 DH Instruments, Inc.
6.11 CONTROL CABINET, INTERRUPTING PRESSURE SUPPLY TO
THE TEST GAS SUPPLY PORT
To protect the FPG8601 from reverse flow in the lubrication circuit, pressure supply to the FPG8601
lubrication circuit must be higher than the pressure in the lubrication circuit at all times. Before pressure
supply to the Control Cabinet
TEST GAS SUPPLY port is interrupted, the following procedure must be
followed to avoid reverse flow:
Set gauge measurement mode using the [MODE] button on the ADCS Run Screen Toolbar (see
Section 4.3.5.3). Wait for the process to complete.
Shut down the FPG8601 system by pressing the [OFF] button on the ADCS Tools FPG Run Screen
(see Section 4.3.5.3). Wait until the shut down procedure is complete (FPG Pressure is
< --- SHUTDOWN --- > and indicates Ready, see Section 4.1.1).
The TEST GAS SUPPLY pressure may now be interrupted. DO NOT REMOVE ELECTRICAL
POWER FROM THE FPG8601.
Once the pressure supply to the TEST GAS SUPPLY port has been reestablished, the FPG8601 can be
started again by pressing the [ON] button on the ADCS Tools FPG Run Screen .
6.12 CONTROL CABINET, DRAIN DRIVE AIR TRAPS
The ADCS-601 Control Cabinet contains two traps to clean the drive air that is supplied to the ADCS-601
system (see Figure 10). These should be emptied regularly.
The traps can be emptied without removing pressure. To empty the traps proceed as follows.
Open the door on the front of the ADCS-601 Control Cabinet.
Hold an absorbent towel directly under the trap agains its bottom tip and briefly open the trap by
turning the butterfly tab at the bottom of the trap on the right..
6.13 CONTROL CABINET, CHECK GAS SUPPLY PANEL SETTINGS
The settings of Gas Supply Panel regulators can be viewed on the analog gauges on the gas supply
panel (see Figure 10). To access the Gas Supply Panel, open the door on the bottom of the Control
Cabinet (see Section 2.1.2).
The regulators settings are fixed by lock nuts. To adjust the regulator, loosen the lock nut then use a
screwdriver to turn the regulator stem.
The Gas Supply Panel settings are specified in Table 20.
Table 20. Gas Supply Panel pressure settings
REGULATOR SET POINT
[kPa (psi)]
AMH Drive 275 (40)
Valve Drive 600 (87)
FPG Lubrication 300 (45)
PG Controller Supply 450 (65)
FPG Controller Supply 85 (12)