Emerson PS2-Y7A User Manual

PRESSURE CONTROLS PS2 SERIES

PS2 SERIES PRESSURE SWITCH
DUAL CONTROL

PS2 Dual Pressure Controls are designed for use on high and low pressure applications
in refrigeration, air conditioning, and heat pump systems. This control reacts to
changes in either low or high side pressures, providing single-device control of the
compressor or other electrical device.

PS2-Y7A

FEATURES

• Adjustable pressures and differentials

• Narrow adjustable differential depending on model

• Range and differential pointer in units bar and psig

• Range and differential individually lockable by tab

• High rated SPDT contacts for all versions

• Captive terminal and cover screws

• Manual toggle for system checkout and override

• Factory installed wire bridge for reduced installation effort

• High side convertible from manual to auto reset.

• Automatic and manual reset models available

SPECIFICATIONS

Electrical Ratings ................................. SPDT Switch Rated for 12 FLA and 72 LRA at 240 VAC

.........................................................................................and 16 FLA and 96 LRA at 120 VAC

UL/CUL File Number ................................................................................................. E85974

........................................................................................CE per (LVD) Low Voltage Directive

MODEL NUMBER NOMENCLATURE - Example: PS2-Y7A

SERIES FUNCTION PRESSURE RANGE CONNECTION TYPE

PS2

Dual Adjustable
Pressure Switch

X = Auto Reset

Y = Low Side: Auto Reset
High Side: Convertible Reset

-Y

Internal range and differential adjustments

External range and differential
adjustments

7 A

7 = Left Side: 9"Hg to 102 psig (-0.3 to 7 bar)
Right Side: 87 to 464 psig (6 to 32 bar)

A = 1/4"" SAE Male Flare
K = 1 m (3 ft.) Cap Tube, 1/4"" Flare Nut
L = 1 m (3 ft.) Cap Tube, 1/4"" ODM Solder Connection

PS2 PRESSURE SWITCH DUAL CONTROL

LOW PRESSURE SIDE HIGH PRESSURE SIDE

FUNCTION

Auto Reset

Manual Reset

PRESSURE

RANGE

4.4 to 102 psig,

0.3 to 7 bar

4.4 to 102 psig,

0.3 to 7 bar

DIFFERENTIAL

RANGE

15 to 73 psig 49/65 psig 87 to 464 psig Fixed 290 psig 1/4" SAE Male Flare PS2-Y7A 099008

15 to 73 psig 49/65 psig 87 to 464 psig Fixed 290 psig

FACTORY

SETTING

PRESSURE

RANGE DIFFERENTIAL

FACTORY

SETTING

CONNECTION

TYPE

1 m (3 ft.) Cap Tube

w/1/4" Flare Nut

MODEL

NUMBER

PS2-Y7K 099009

ITEM

NUMBER

R- 48 99_146 _12.16. 20