Emerson LW4 Serie Instrucciones De Funcionamiento

G e n e r a l i n f o r m a t i o n :
LW4/5 incorporate a Hall-Sensor to measure liquid level of refrigerants and oil
in liquid receivers, oil separators, flash tank and oil reservoirs. A magnetic float
changes its position according to the liquid level. The hall sensor converts these
magnetic field changes into an equivalent signal, which is used by the internal
electronic to show with the LEDs the status of liquid level. If the level reaches
certain level range (high or low level range), LW illuminates RED LED and
activate a SPDT contact. If the liquid level comes back to normal level range, the
Green LED illuminates and the contact switch back.
Notes:
LW4 is developed for HFC refrigerants, subcritical CO
3
oil (density range: 700...1300 kg/m ).
LW5 is specially adapted to the requirements of transcritical CO
and released only with dedicated adapters (Part No.:
O v e r v i e w L W 4 ... / L W 5 ... : ( s e e F i g . 1 )
LW4... LW5...
Base unit
(60 bar) (130 bar)
HFC, CO &
2
Refrigerant CO
2
HFO blend
Sight glass High Pressure
33,3x2,4W (2)
O-ring 33,3x2,4V (4)
Sight glass (3) (5)
Washers (6) 3 pieces -
Fastening 3 screws 2 screws
screws (7) M6x45 M6x45
Fastening 1 countersunk
-
screws (8) screw M6x45
Connection
type
OM0-CCA LW0-CCA CO2
Adapter type
Connection size 3/4"-14 NPTF 3/4"-14 NPTF
Part No. 805039 805254
Main part Aluminum screw adapter (11)
Aluminum
Second part Steel flange (14)
flange (14)
High pressure
O-Ring (10)
25.07x2.62W 25.07x2.62V
Sealing parts
Tapered thread (Teflon tape)
to Vessel
Note: The numbers in brackets correspond to legends of Fig. 1.
Emerson Climate Technologies GmbH
Am Borsigturm 31 I 13507 Berlin I Germany
Liquid Level Monitoring Systems LW4/LW5 Low or High Level
S y s t e m c o m p o n e n t s :
Legend Description
1 Base unit
2 Sight glass O-ring LW4...
3 Sight glass LW4...
4 Sight glass O-ring LW5...
5 Sight glass LW5...
6 Spring washer: 3 pcs (LW4...)
, HFO blends and
2
7 Screws (M6 x 45)
Countersunk screw: 1pcs
systems
8
2
(LW5...)
805254 and 805257).
9 Screw transport holder (discard)
10 Adapter front O-ring:
Note: For details, see table below and Fig. 1
LW4... LW5...
(60 bar) (130 bar)
HFC, CO &
2
CO
2
HFO blend
High Pressure
33,3x2,4W (2)
33,3x2,4V (4)
(3) (5)
3 pieces -
3 screws 2 screws
M6x45 M6x45
1 countersunk
-
screw M6x45
Thread NPTF
LW0-1/2 LW0-1/2 CO2
1/2"-14 NPTF 1/2"-14 NPTF
805256 805257
Aluminum
Steel flange (14)
flange (14)
High pressure
25.07x2.62W 25.07x2.62V
O-ring 28.3x1.78W (13)
*) 3 or 4 pieces M6 screws for fastening is not part of delivery.
www.emersonclimate.eu
Operating instruction
Control
Legend Description
11 / 12 Adapter with thread connection
13 Adapter O-ring backside
Flange ring
14 Aluminium (LW4...) /
Steel (LW5...)
15 Rotalock adapter
16 gasket Rotalock adapter backside
17 Flange adapter
18 Flange adapter O-ring backside
Power supply connector
19
LW-24V-x
20 Relay connector OM3-Nxx
LW4... LW4...
(60 bar) (60 bar)
HFC, CO & HFO blend
2
33,3x2,4W (2) 33,3x2,4W (2)
(3) (3)
3 pieces 3 pieces
3 screws M6x45 3 screws M6x45
- -
Thread UNF/UNEF
OM0-CBB OM0-CCB
1-1/8"-18 UNEF 1-1/8"-12 UNF
805038 805040
Aluminum screw adapter (12)
Aluminum flange (14)
25.07x2.62W
O-ring 21.89x2.62W (13)
Date: 25.07.2019
F i g . 1
LW4... LW4...
(60 bar) (60 bar)
HFC, CO & HFO blend
2
33,3x2,4W (2) 33,3x2,4W (2)
(3) (3)
3 pieces 3 pieces
3 screws M6x45 3 screws M6x45
- -
Rotalock
OM0-CCD OM0-CCE
1-3/4"-12 UNF 1-1/4"-12 UNF
805042 805043
Aluminum nut and flange (15)
- -
25.07x2.62W
Gasket PTFE 1-3/4" (16) Gasket PTFE 1-1/4" (16)
LW4...
(60 bar)
HFC, CO & HFO blend
2
33,3x2,4W (2)
(3)
3 pieces
3 screws M6x45
-
Flange
OM0-CUA *
3- / 4-holes
805037
Aluminum flange (17)
-
25,07x2,62W
O-ring 33,3x2,4W (18)
LW45_OI_ML_R05_865912.docx