DH Instruments ADCS-601, Руководство по эксплуатации и обслуживанию

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ADCS-601™ OPERATION AND MAINTENANCE MANUAL
© 2005 DH Instruments, Inc. Page 56
3.8.2 SHUT DOWN
Pressure must always be supplied to the TEST GAS SUPPLY port on the rear of the
Control Cabinet unless the FPG8601 has been shut down following the long term shut
down instructions in Section 3.8.2.2. Failure to supply pressure to the FPG8601
lubrication gas circuit will cause damage to the instrument.
There are two different standard ADCS-601 shut down conditions.
1) Short term shut down: Short term shut down is intended to limit power consumption
and preserve vacuum pump life when the system is not used for limited periods of
time such as overnight or over a weekend (see Section 3.8.2.1). Short term shut
down may also be used for extended periods and is preferable to long term shut
down if support facilities allow it.
2) Long term shut down: Long term shut down is intended to completely shut down
the ADCS-601 system when it will not be used for extended periods of time or before
it will be disassembled. Long term shut down should be avoided to the extent
possible as restarting from long term shut down is more likely to require maintenance
procedures before normal operation is restored.
3.8.2.1 SHORT TERM SHUT DOWN
To reduce consumption of power and preserve vacuum pump life, the following
conditions may be implemented when the ADCS-601 is not in use, for example
over the weekend. In this state, ADCS-601 is in gauge measurement mode with
the utility vacuum pump turned off.
Put system into gauge measurement mode by pressing the [Measurement
Mode] button on the ADCS Run Screen Toolbar (see Section 4.3.5.3). If
necessary, wait for the mode transition to complete.
Turn OFF the UTILITY PUMP power switch on the front of the Control Cabinet.
DO NOT disconnect pressure supplies. Pressure supplies must be maintained.
Utility vacuum must be supplied to the ADCS-601 for it to operate normally,
even in gauge mode. Be sure to reestablish utility vacuum after a short term
shut down. Failure to do so will prevent ADCS-601 from functioning properly.
3.8.2.2 LONG TERM SHUT DOWN
If the ADCS-601 will not be used for an extended period, or to shut it down
completely for disassembly, proceed as follows.
Complete the short term shut down (see Section 3.8.2.1).
Use the ADCS Tools [FPG] button to display the FPG run screen. In the
ADCS Tools FPG Run Screen , press the [Shutdown] (OFF) button.
Wait for the FPG8601 to indicate Ready and the measured pressure to indicate
< -- SHUTDOWN -- > indicating the FPG is shut down.
Disconnect pressure supplies and turn OFF power using main switches on
front of Control Cabinet.