5-4-2 Other options
When the discharge rate is insufficient, use the
optional circulation metallic nozzle with a large
diameter to reduce the piping resistance.
(1) Remove the flow control valve from the main body
and change the direction of handle. (Refer to the
procedure to change the direction of handle of flow
control valve described below.)
(2) Wind the seal tape four to five turns around the
threaded portion and screw in the 90 elbow (metal)
(for both discharge and return sides).
(3) Screw the flow control valve and metal nozzle to
the discharge side and the metal nozzle to the
return side. In either case, wrap the seal tape four
to five turns to the threaded portion before
screwing.
- 23 -
■
Metal nozzle set
Model
Nozzle outside diameter (material)
Code No.
AL-1
φ
10.5(brass
)
242420
AL-2
φ
13.5(brass
)
243950
AL-3
φ
16(brass
)
243960
AL-6
φ
10.5
(
SUS)
243970
AL-8
φ
13.5
(
SUS)
243980
AL-9
φ
16
(
SUS)
243990
※
Procedure to change the direction of handle of
the flow control valve
Remove a red cover with a
thin rod
Handle
■
Communication cable A for cooling
Type CC-2A (compatible with one CA type and one N1200 B type
■
Branching box for communication cable for cooling
Type CC-BOX (compatible with one A type and one N1200 B)
Communication cable A
for cooling
Communication cable
branch box for cooling
Connectors: Two in the front
:
One in the backside
The communication cable for connection and the cable relay
box by connecting Type N-1200B and A-1116A for use in
conjunction with the evaporator and cooling water circulator.
Operation state of CA-1116A type pump
CA temp. control
CA temp. control stopped
CA alarm ON
Initial
Initial
Pump OFF
Pump ON
Pump ON
Pump OFF
Pump OFF
Pump OFF
Pump OFF
Pump OFF
Pump OFF
Pump OFF
Pump OFF
Pump OFF
Pump OFF
N-1200B
Operation state
With power ON
STOP→RUN
RUN→STOP
At N-1200 alarm
With power OFF
Interlock between B-1200B and CA-116A
※
When the pump switch of CA-1116A is operated, it turns ON/OFF the pump in preference to switch operation on CA.
※
There is no signal communication from CA-1116A to N-1200B.
※
When two units of N-1200B are connected, circulation cannot be stopped unless these two units are stopped.
For interlock operation
• The refrigerator keeps operation even during stop of circulation. The use of antifreezing solution is
recommended. (If water only is used, the area around the cooling coil is frozen.)
• Pressing the pump key while the circulation pump is stopped causes start of circulation.
• After completion of operation, be sure to turn OFF power supply for N-1200B and CA-1116A.
Change the handle direction by
180
°
and fix it with screw.
Install the cover
90
°
elbow
Flow control valve
Circulation discharge
nozzle outside the bath
(Metal nozzle)
Remove the screw
Screw the handle in this
direction to the metal elbow
Cover
■
Communication cable
For the operation method, refer to the operation manual of vacuum controller, Type NVC-3000.
Communication cable
Communication cable
Code
№
269450
269460
269470
Model
COM-0.5M
COM-1M
COM-2M
Circulation return nozzle
outside the bath
(Metal
nozzle)