LEYBOLD RW 6000-1, Руководство по эксплуатации

Страница: 17 / 28

GA 12.107/5.02 - 12/97
L E Y B O L D
POWER MODULE
FAILURE RESET
COLD HEAD CONTROL
17
Operation
3.4 Shut-down
Switch off the compressor unit at the master switch.
Allow the coolant circulate for a further 10 minutes after
shutting down the unit and then close the circuit.
Allow the cold head being served to warm-up before
detaching the flexlines.
Loosening the flexlines with the cold head at low temper-
atures can result in a loss of helium.
Warning
Detaching the flexlines with the cold head at
low temperature can, when they heat up,
result in a rise in pressure beyond the per-
missible 28 bar (406 psig) operating pres-
sure for the disconnected flexline. All the
self-sealing couplings which are not in use
shall be provided with protective caps.
Unscrew the flexlines in a sequence reverse to that
described in Section 2.6. Screw protective caps on to
the self-sealing couplings.
Store the compressor unit in a dry place.
Warning
Even after the unit is switched off, the com-
pressor unit, the cold head and the flexlines
will be under pressure of up to 16 bar (232
psig).
Observe the appropriate safety regulations.
If there is danger of freezing temperatures, drain the
coolant prior to storing or shipping the compressor unit.
The compressor unit may be tilted by a maximum of 45
°
during shipment and storage, to a maximum of 15
°
during operation.
Key to Fig. 9
1
Master switch
2 Indicator: Helium too warm
3 Reset button
4 Indicator: Insufficient pressure
5 Operating hours meter
6 Circuit breaker for control voltage
7 Circuit breaker for cold head
8 Pressure gauge
Fig. 9 Control elements
1
2
3
4
5
6
7
8