RH CGS-240, Руководство пользователя

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Installation
CGS-240 Manual 6/15/2021
Page 16 of 148
3.2.3 GAS SUPPLY CONNECTION WHEN UTILIZING AN EXTERNAL PRESSURIZED AI R SOURCE
It is possible to operate the humidity generator from an external pressurized air source. Before connection, ensure
the external pressurized air source is clean, dry, and oil-free as identified in section 3.1.2. A regulated pressure of
approximately 60 to 150 psig is recommended.
Prior to connection of an external pressurized air source, ensure the internal air
compressor that was supplied with the system is turned off (Figure 3.4) and the
pneumatic valve is closed (Figure 3.7). If not using the supplied air compressor,
the lower rear panel power switch may also be turned off.
Disconnect the short blue ¼” diameter pneumatic connection tube from the
upper cabinet fitting. Do so by pressing upward on the end of the fitting where
the tube inserts, while simultaneously pulling downward on the tube to remove
it. Connect your external gas supply to this upper cabinet push-to-connect
fitting using
a standard ¼” outer diameter flexible hose (such as PTFE, PFA,
PUR). Press the tube fully into the fitting to lock it into place.
Turn on your external air source and power up the CGS-240 on the
front panel below the monitor (the back panel power switch of the
upper cabinet must also be on). Press and hold the red button on
the left side of the air dryer assembly to activate the air inlet
solenoid (pictured below). Then adjust the internal pressure
regulator to a value of at least 5 psi lower than the lowest pressure
expected from your external pressurized source. This allows the
internal pressure regulator to operate normally and ensure stable
pressure to the system. After regulator adjustment, you can let go
of the red button and the pressure on the gauge will slowly drop to
0, which is normal.
If the regulator was adjusted more than 20-30% of its previous
pressure value, then it is recommended to adjust the air bleed to
the fan motor housing, located on the back of the chamber.
To adjust the air bleed to the fan motor housing refer to section
7.1.5.3.
Figure 3.7 Pressurized Air Connection
Figure 3.9B Red Button on Air Dryer Solenoid
Figure 3.8A Pressure Regulator