Specifications
14
Compressor Control
•
ON and OFF switch with run light for local operation of compressor and cold head.
•
Remote Start/Stop capability (using optional accessory cable, P/N 280368B20).
•
Automatic restart upon restoration of power after power interruption.
•
Automatic shutoff for the following system faults. Operator correction is required before
restart.
•
High helium gas discharge temperature [TSG] when > 93° C (200° F)
•
High compressor motor windings temperature.
F-20L P/N
Switch Opens
Switch Resets
280090D18N
145° C
(293° F)
69-87° C
(156-189° F)
280090D27N
120° C
(248° F)
52-70° C
(126-158° F)
•
Open control circuit/valve motor fuse(s)
Front Panel Connections
(See Figure 2.)
•
Helium gas connections: size 8, male (8M) couplings, high-pressure supply (red) and
low-pressure return (green).
•
Helium fill port: size 4, male (4M) coupling.
•
Cooling water connections: bulkhead fittings, ½” MNPT.
•
Cold head receptacle
•
Mains power receptacle
•
Accessory receptacle
Front Panel Mounted Items
(See Figure 2.)
•
Supply pressure gauge (0-600 psig, 0-40 bar, 0-4000 kPa)
•
Main power circuit breaker (set at 20 A)
•
ON/OFF rocker switch with run light
•
Fuses
•
Elapsed time meter (ETM)
•
50/60 Hz Toggle switch (for operation with RDK-101D cold head only)
Environmental Requirements
Operating
Storage
Ambient Temperature
4° C to 40° C
(40° F to 104° F)
-20° C to 65° C
(-4° F to 150° F)
Relative Humidity
20% to 80%
(non-condensing)
10% to 90%
(non-condensing)
Atmospheric Pressure
70 kPa to 106 kPa
20 kPa to 106 kPa
Magnetic Field Limits
≤
150 Gauss
Summary of Contents for F-20L
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Page 24: ...Specifications 20 Figure 3 F 20L Compressor Dimensions Dimensions are in inches and mm...
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Page 53: ...Troubleshooting 49 Figure 19 F 20L Compressor Wiring Diagram...
Page 54: ...Troubleshooting 50 Figure 20 F 20L Compressor Wiring Schematic...