Cryomech PT415, Инструкция по установке, эксплуатации и текущему обслуживанию

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Operation
7-3
7.3 Use of the display panel
Status and error messages will be shown on the display screen. The status messages,
error messages, and set points at which error conditions will occur are listed in Section
7.7.
The screen normally shown on the display is referred to as the “Main Screen”. The
messages described in Section 7.7 are displayed on the bottom of the run-time screen.
The bottom line on the main screen displays the number of hours the compressor has
run.
The “Menu” button in the bottom left corner of the main screen is used to switch navigate
between all of the various screens available.
7.4 Shutdown procedure
Press the black compressor “Off” button on the front panel of the compressor package.
This will switch off the compressor system. Switch off the front-panel mounted circuit
breakers to shut down the entire system.
7.5 Recommended routine procedures
INFORMATION
It is helpful to monitor the cryorefrigerator daily in order to detect changes in
performance early. These changes can signify degradation in performance that could
result from the beginning of a problem that requires attention.
Cryomech recommends keeping regular logs of key measurements at intervals that make
sense for the way you use your system.
7.5.1 High and low pressure
Changes in the high and low pressure readings on the compressor package’s gauges are
used for diagnosing several different types of problems. It is important to know whether
changes are sudden or gradual and to know how the high and low pressures are
changing relative to each other.
The high and low pressures should be monitored daily.
Cryomech recommends that you maintain a regular record, at intervals that make sense
for the way you use your system, of the high and low pressure readings.
The RS232/488
port can be used to remotely monitor and record the pressure data.
7.5.2 Cold head temperature
Temperature changes are the other key diagnostic.
If a temperature sensor is attached to the cold head’s heat exchanger(s), Cryomech
strongly recommends that you monitor the temperature(s) daily.
Cryomech also recommends that you keep a regular record of the temperature(s) at
intervals that make sense for the way you use your system.