Sumitomo RDK-408D - Construction; Controls and Couplings

TECHNICAL INSTRUCTION Sumitomo Heavy Industries, Ltd.
CSW-71C 6
1-2 CONSTRUCTION
1-2 CONSTRUCTION
The function of the Compressor Unit is to supply high pressure He gas to the Cold Head and
re-compress the returned He gas from the Cold Head. The Compressor Unit consists of the following
major components: a Compressor Capsule, a Cooling system, Oil separation and injection system, and
Adsorber.
1-2-1 CONTROLS AND COUPLINGS
The controls and coupling for CSW-71C are described in Table 1.3 and Figure 1.3.
Table 1.3 CONTROLS AND COUPLINGS FOR CSW-71C COMPRESSOR UNIT
No. ITEM FUNCTIONS
1 MAIN POWER SWITCH : (QF1)
A twist handle for main electric power supply and
for protection from
over-current and short-circuit.
2 DRIVE SWITCH : (SA1)
A seesaw switch for start-up and shut-
down operation for the
compressor unit. The refrigerating system can be in a operating
condition by the DRIVE SWITCH “ON” after switching th
e MAIN POWER
SWITCH “ON” condition.
3
COLD HEAD DRIVE SWITCH :
(SA2)
A switch for operating the COLD HEAD maintenance only. Under the
MAIN POWER SWITCH “ON” and the DRIVE SWITCH “OFF”.
Caution; Be sure to turn it OFF in normal operation.
Using the compressor unit with the cold head drive switch turned ON
may result in misoperation or malfunction.
4
REMOTE DRIVE SWITCH :
(SA3)
The compressor unit can be operated remotely with the external control
by switching “EXT”, and cannot be started up in conditi
on of switching
“EXT” after the Drive Switch operated.
5 INDICATING LAMP : (HL)
To indicate an Open/Shut condition of the Solenoid Valve (YV) ;
Solenoid Valve : “Shut” ----- the Lamp “ON”
“Open” ----- the Lamp “OFF”
6 SUPPLY PRESSURE GAUGE
To indicate a filled He-
gas pressure in the compressor unit, during not in
operation of the compressor unit, and a compressed He-
gas pressure
(Supply Pressure) can be indicated under the operating condition.
7 HOUR METER : (HM)
To indicate a total operating h
our of the compressor unit, and the hour
counting will be referred for maintenance interval.
8 FIELD TERMINAL : (TB0)
To use for connecting of input power supply cable.
At a connecting power cable, verify the phase label markings L1, L2 and
L3. The compressor unit cannot be operated in case of miss-
connecting
the power cable.
9 GROUND TERMINAL : (PE)
A connector for the earth wiring, and verify the tight connecting for earth
wiring as well as Input Power Cable.