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

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Operation
7-15
7.10.3 System has shut itself down. Helium compressor’s power switch
light and dewar standby light both off
SYMPTOM System has shut itself down. Helium compressor’s power switch light
and dewar standby light both off.
POSSIBLE
CAUSE
1) Circuit breaker tripped.
2) Interruption of the power supply to the helium compressor.
3) Pressure switch tripped.
4) Temperature switch tripped.
5) Optional electrical protection device in fault condition.
REMEDY
1) Reset the circuit breaker on the front panel of the helium
compressor. See Section 5.
2) Check the power supply to the system and verify that it meets the
requirements outlined in Section 5.
3) Check the static helium charge in the system. With the complete
system at room temperature, the static helium charge must meet
the specification outlined in Section 5. If the helium charge is
within the specification, reset the pressure switch located on the
bottom of the front panel of the helium compressor. See Section
5.
4) Water cooled models -Make certain the cooling water flow rate
and inlet temperature meets the specification outlined in Section
5.
Air cooled models – Make certain the cooling fan is functioning.
Reset the temperature switch located on the bottom of the front
panel of the compressor package. See Section 5. The switch will
not reset until its sensor has cooled approximately 15
°
F (8.3
°
C).
5) Refer to electrical protection troubleshooting section below.
7.10.4 Air compressor will not start
SYMPTOM
Air compressor will not start.
POSSIBLE
CAUSE
1) Circuit breaker tripped.
2) Interruption of the power supply to the air compressor.
3) Motor overload switch tripped.
REMEDY
1) Reset the circuit breaker.
2) Check the power supply to the system and verify that it meets the
requirements outlined in Section 5.
3) Push the motor overload reset button.