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Ranco
O and G series pressure controls are designed to switch electrical
loads such as contactors, relays, fans and motors in HVAC and Commercial
applications in response to changes in sensed refrigerant pressure.
APPLICATIONS
- Control of suction pressure in either an operating or limit
control role.
- Control of high side pressure in either an operating or limit
control role.
- Condenser fan cycling.
- Compressor Lube Oil Protection.
|
010
/ 011 / 016 / 020
- Heavy duty controller with NEMA 1 enclosure provides variety
of mounting location options.
- Laser welded stainless steel bellows for extended life and accurate,
precise settings.
- Super Cap® capillary protection system provides
ten times more protection from vibration-induced breakage than
controls with traditional capillary designs.
- Setpoints are adjustable within several available ranges with
fixed and adjustable differentials.
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G20
/ G23
- Medium-duty rated pressure switch for mounting in an electrical
panel.
- Bellows-operated control with fixed setpoints.
- Low (G20) and high (G23) pressure versions; automatic or manual
reset (factory set).
|
012
- Same features as above except low pressure suction and high
pressure discharge functions are combined in one control.
- High pressure reset can be "field converted" between
manual and automatic.
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070
/ 071
- Compact size and lightweight control for fixed setting pressure
sensing.
- Hermetically welded/brazed stainless steel snap discs/pressure
fittings for long term leak protection.
- Available in close on pressure rise (O70) and open on pressure
rise (O71) versions.
- SPST switch is watertight and environmentally sealed with epoxy
resin.
- Wire leads or quick-connect terminal electrical connections.
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SPECIFICATIONS
|
Reset |
Switch |
Control Type |
Operating Range and Differential
(See table) |
Connection Style
(See table) |
Typical UL / CSA Ratings1 |
| VAC
(60 Hz) |
FLA |
LRA |
NIA |
PD,
VA |
|
Auto |
SPST |
O10 |
A,B,C,D,E |
1,2,3 |
24
120
240
|
24
24
|
144
144
|
|
144
720
720
|
|
O11 |
A,B,F |
|
O12 |
Low (A)
High (G or H) |
|
Manual |
Low (J)
High (H) |
|
Auto |
SPDT |
O16 |
A,B,C,D,E,N |
120
240
2402
|
17
17
20
|
102
102
80
|
24
24
|
720
720
|
|
Manual |
F |
|
Auto |
DPST |
O20 |
A,B,C,D,E |
120
240
|
24
24
|
144
144
|
24
24
|
125
125
|
|
Auto / Manual |
SPST or
SPDT |
G20 |
K |
1,2 |
120 / 2403
120 / 2084
240
277
|
20
20
8.3
7
|
78
78
39
42
|
|
|
|
G23 |
L |
|
Auto |
SPST |
O70 |
L,M |
3,4,5 |
24
120 - 277
120
240
|
10
5
|
40
20
|
|
48
375
|
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O71 |
TYPICAL DRAWINGS
Click on the part number above to view the drawing. |
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OPERATING
RANGE AND
DIFFERENTIAL TABLE
|
|
Operating
Range |
Differential |
|
A |
12" Hg to 50 PSI |
5 to 35 PSI |
|
B |
10" Hg to 100 PSI |
10 to 40 PSI |
|
C |
50 to 150 PSI |
10 to 40 PSI |
|
D |
100 to 250 PSI |
20 to 100 PSI |
|
E |
100 to 400 PSI |
40 to 150 PSI |
|
F |
150 to 450 PSI |
40 to 150 PSI |
|
G |
100 to 250 PSI |
50 PSI Fixed |
|
H |
150 to 450 PSI |
70 PSI Fixed |
|
J |
10" Hg to 100 PSI |
Fixed |
|
K |
5" Hg to 100 PSI Fixed |
Fixed |
|
L |
100 to 450 PSI Fixed |
Fixed |
|
M |
5 to 100 PSI Fixed |
Fixed |
|
N |
12" Hg to 80 PSI |
5 to 38 PSI |
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CONNECTION
STYLE
|
1. Capillary with 1/4" sweat tube (depth stop, optional) |
|
2. Capillary with female flare nut (core depressor, optional) |
|
3. Male flare |
|
4. Female flare nut (core depressor, optional) |
|
5. 1/4" sweat tube (depth stop, optional) |
1
O10 / O11 / O12 / O16 / O20 are UL Listed Devices (UL File
SA 512) and CSA Recognized under LR 32079. G20 / G23 / O70
/ O71 are recognized under UL SA512 and CSA LR 1942. Confirm
ratings with factory as they vary within control type.
2 Hermetic units only.
3 Three-wire power supply, 120 V ac to ground.
4 Four-wire power supply, 120 V ac to ground.
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