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

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Operation
7-9
Figure 7-5: Visual indicator on the water filter
•
Activate the manual override on the filter bank’s automatic drain valve to check for
proper function. If the automatic drain valve does not appear to be functioning
properly, it must be serviced immediately. If the override must be activated several
times to completely drain the accumulated condensate, the drain valve’s timer should
be adjusted. See Section 6 for instructions on adjusting the timer settings.
CAUTION
If excessive amounts of condensate are allowed to accumulate in the filter bowls, the
condensate will move downstream and destroy the N
2
generator. This type of
damage is not covered under the warranty.
•
Visually check the sight glasses on the carbon filter and after filter for moisture.
Evidence of moisture indicates a problem with the compressed air supply, the two
upstream filters or the automatic drain valve. The problem must be diagnosed and
corrected immediately. See the Troubleshooting Section.
•
Open the manual drain, located on the bottom of the carbon filter, to check for an
accumulation of moisture. If any moisture is present it signifies a problem with the
compressed air supply, the two upstream filters or the automatic drain valve. The
problem must be diagnosed and corrected immediately. See the Troubleshooting
Section.
7.7.3 Dewar
•
Check and record the Dewar pressure. The gauge should read 3-7 PSIG when the
system is operating. When the system is off, the gauge should read 10-12 PSIG
maximum.
•
If the dewar pressure gauge shows a pressure greater than 15 PSIG, disconnect the
nitrogen flex line from the low pressure regulator and relieve the pressure through the
bleed valve. The problem must be diagnosed and corrected immediately. Contact
Cryomech if the cause of the over-pressurization is not determined.
Indicator needle CHANGE band