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Table 1: Standard Model P70, P72, and P170 MICRO-SET® Dual Pressure Controls for Non-Corrosive
Refrigerants
Model Code
Switch
Number
Action
1
SPST
P70LB-6
1
P70MA-18
Two
1
P70SA-1
Independent
SPDT
1
SPST
P170LB-6
1
P170MA-18
1
Two
P170SA-1
Independent
SPDT
1.
Control models with high pressure side (only) that are UL Listed as Refrigeration Pressure Limiting Controls.
Table 2: Standard Model P70, P72, and P170
Model Code
Switch
Number
Action
1
SPST
P70LA-2
1
P70MA-2
1.
Control models with high pressure side (only) that are UL Listed as Refrigeration Pressure Limiting Controls.
2
P70, P72, and P170 Series Controls for Dual Pressure Applications Installation Instructions
Low Pressure Side
psig (kPa)
Range
Differential
12 in. Hg to
Min 5 (34)
80 psig
Max 35 (241)
(-41 to 552)
All Range
Low Pressure Side
psig (kPa)
Range
Differential
20 in. Hg to
Min 7 (48) Max
100 psig
50 (345)
(-68 to 690)
High Pressure Side
psig (kPa)
Range
Differential
(Non-
Adjustable)
100 to 500
Fixed
(690 to 3,447)
Approximately
65 (448)
Lockout
Requires
Manual Reset
Fixed at
65 (448) or
Lockout
Requires
Manual Reset
Fixed
Approximately
65 (448)
Lockout
Requires
Manual Reset
Fixed at
65 (448) or
Lockout
Requires
Manual Reset
Dual Pressure Controls for Ammonia
High Pressure Side
psig (kPa)
Range
Differential
(Non-
Adjustable)
100 to 500
Fixed
(690 to 3,447)
Approximately
65 (448)
Lockout
Requires
Manual Reset
Pressure
Limited
Connector
Knob
Adjustment
36 in. Capillary
Low CUT OUT
with 1/4 in.
Flare Nut
None
1/4 in. Male
Low CUT OUT
Flare
Connector
None
Pressure
Limited
Connector
Knob
Adjustment
1/4 in. Female
None
NPT
Connector
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