Cryomech LNP-40, Инструкция по установке, эксплуатации и текущему обслуживанию

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Installation
6-7
6.3.5 Connect the dewar cord
1) Note that the female plugs attached to each end of the dewar cord are unique for
both the compressor and the dewar.
2) Assure that the dewar cord is sufficiently long to reach the dewar. If the cord length is
not sufficient to reach the dewar, adjust the location of the helium compressor
package or the dewar.
3) To connect the dewar cord to the dewar, make sure that the alignment pins on the
dewar receptacle correspond to the alignment grooves on the plug. Turn the plug
sleeve clockwise while pushing the plug into the receptacle. The plug is designed to
“click and lock” when assembly is completed.
4) To connect the dewar cord to the compressor, align the pins on the plug with the
grooves on the compressor’s connector. Push the plug onto the connector and turn
the locking ring clockwise until snug.
6.3.6 Remove excess helium from the helium compressor package
IMPORTANT
The system is shipped from the factory with excess helium in order to allow for some
loss when assembling system components. Complete this step
ONLY if the actual
system pressure exceeds the pressure indicated in Step 1, below.
1) Observe both the low and high pressure gauges located on the front panel of the
helium compressor package and determine which gauge has the lower reading. If the
system helium pressure shown on the lowest reading gauge EXCEEDS the pressure
specified in Section 5 follow the procedures in this step. Otherwise, skip the following
steps.
2) Assuming pressures EXCEED those indicated in Step 1, above, first make sure that
the service valve (located on the front panel) is CLOSED (turned fully clockwise).
3) Attach the ¼" service Aeroquip
®
coupling to the service access.
4) Turning the service valve counter-clockwise, open the valve SLOWLY. Do not vent
more than 5 PSIG (.34 bar) of gas per minute.
5) Observe the gauge with the lower reading. Once the gauge reaches the system
helium pressure indicated in Step 1, close the service valve by turning clockwise and
remove the service Aeroquip
®
from the service access.
6.4 N
2
generator/filter bank panel installation
For optimal performance, the N
2
generator/filter bank panel must be located in an area
with an ambient temperature range of 77 to 100°F (25° to 38°C).
CAUTION
If the N
2
generator /compressed air filter bank panel is exposed to freezing ambient
temperatures, 32°F (0°C) or lower, the water collected in the filter bank will freeze,
destroying the filters, drain lines and automatic drain valve (ADV).