6270A
Operators Manual
12
Access the Module Bay
Before use, install the Pressure Control Module (PCM) and Pressure
Measurement Module(s) (PMM). After the Product is properly placed (in a
standard 19 inch rack or on a bench top) install the modules in the Module Bay.
Note
The Product rear-panel power switch can be on or off during PMM
exchange or installation.
Before removing the PCM, vent the supply pressure.
To access the Module Bay, see Figure 2:
1. Pull out the handle () located directly below the numeric keypad. This
unlocks the front panel.
2. Pull the handle to slide out front panel and access the Module Bay ().
Note
For safety, the Product automatically vents to atmosphere when the
front panel is unlatched and opened. When the front panel is open,
the system stays in the Vent mode until closed.
For service activity, see the Service Manual for detailed service
processes.
For standard operations, the system pneumatic valves are a
normally closed type. Depending on the chassis power/pressure
down process, differing levels of trapped pressure are possible.
During standard venting processes the maximum trapped pressure
is minimal and may produce a small, safe pressure release when
removing the PCM.
If power is lost to the product, while at high pressure, remove
pressure supply to allow system to mostly depressurize. If possible,
power on system to perform a vent.
Before you open the front panel, remove sensitive, low pressure
devices from the test port. Use the optional Isolation Valve to
improve protection for sensitive pressure devices.
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