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W i r i n g :
• Note: Do not switch the compressor directly. Use compressor's power relay
instead. See Fig.4 for connection of OW to the safety loop (SL) of a rack
controller.
• Connect the OM3-Nxx cable (20) to the relay connection according Fig.3,4:
BU
= blue
BK
= black
BN
= brown
• Connect OW-24V-3 cable (19) wires to power supply 24VAC.
• Recommended torque for the plug screws is 0.15 Nm (hand-tight).
O v e r v i e w O W 4 ... / O W 5 ... : ( s e e F i g . 1 )
Base unit
OW4... (60 bar)
selected HFC/ HFO blends
Refrigerant
& CO
Sight glass
33.3x2.4W (2)
O-ring (mm)
Sight glass
Washers (6)
3 pieces
Fastening screws
3 screws
(7)
M6x45
Fastening screws
(8)
Connection type
OM0-CCA
Adapter type
Connection size
3/4"-14 NPTF
Part No.
805039
Main part
Second part
Aluminum flange (14)
O-Ring (mm) (10)
25.07x2.62W
Sealing parts
to Vessel (mm)
Note: The numbers in brackets correspond to legends of Fig.1.
Emerson Climate Technologies GmbH
Am Borsigturm 31 I 13507 Berlin I Germany
O p e r a t i o n : ( F i g . 4 )
OW4/5 are fully level controlled. The sight glass of each device is divided into three
operational zones. When the level reaches the yellow zone OW starts switching on
the yellow LED after a time delay of 10 sec. Further level drop to the red zone will
switch the alarm relay after a time delay of 20 sec (OW4) or 120 sec (OW5).
OW5...(100 bar)
CO
2
2
High Pressure
33.3x2.4V (4)
(3)
(5)
-
2 screws
M6x45
1 countersunk
-
screw M6x45
Thread NPTF
OM0-CCA CO2
3/4"-14 NPTF
805339
Aluminum screw adapter (11)
Steel flange (14)
High pressure O-ring
25.07x2.62V
Tapered thread (Teflon tape)
www.emersonclimate.eu
Operating instruction
Oil Level Monitoring Systems
OW4 / OW5 TraxOil
OW4
... (60 bar)
selected HFC/ HFO blends
& CO
2
33.3x2.4W (2)
(3)
3 pieces
3 screws
M6x45
-
OM0-CBB
OM0-CBB CO2
1-1/8"-18 UNEF
805038
Aluminum screw adapter (12)
Aluminum flange (14)
High pressure O-ring
25.07x2.62W
O-ring
High Pressure O-ring
28.3x1.78W (13)
Date: 26.07.2019
The current status is indicated with the 3 LEDs acc. to the following table:
Operating Condition /
Status
Supply power is off or
normal oil level (60-40%)
Oil Level (close 40%)
Oil Level (40-25%)
Oil level too low <25%
OW5...(100 bar)
OW4... (60 bar)
selected HFC/ HFO blends
CO
2
& CO
2
High Pressure
33.3x2.4W (2)
33.3x2.4V (4)
(5)
(3)
-
3 pieces
2 screws
3 screws
M6x45
M6x45
1 countersunk
-
screw M6x45
Thread UNF/UNEF
OM0-CCB
805338
805040
Steel flange (14)
Aluminum flange (14)
25.07x2.62W
25.07x2.62V
O-ring
33.3x2.4V (13)
28.3x1.78W (13)
Contact
Function
LED
position
BK-BU close
OK
BK-BN open Green
OK
Green
Yellow
Warning
Yellow
BK-BU open
Alarm
BK-BN close Red
Yellow
OW5... (100 bar)
CO
2
High Pressure
33.3x2.4V (4)
(5)
-
2 screws
M6x45
1 countersunk
screw M6x45
OM0-CCB CO2
1-1/8"-12 UNF
805340
Aluminum screw adapter (12)
Steel flange
(14)
High pressure O-ring
25.07x2.62V
High Pressure O-ring
33.3x2.4V (13)
OW45_OI_ML_R05_865893.docx
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