Sumitomo F-20L - Control, Panel Features, and Environment

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