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Factory Direct Replacement Single Pressure Control for Refrigeration, Air-conditioning and Heatpump

Price: $163.32 
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SKU: PRS77BEA
(See Product Details Below for Manufacturers Part Numbers)
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Factory Direct Replacement Single Pressure Control for Refrigeration, Air-conditioning and Heatpump Applications (Johnson Controls, Penn)



Introduction

These pressure controls are designed for use in

a variety of applications involving refrigeration

high or low pressure. Models supplied have a


•whole range
• design, enabling them to be

used with refrigerants R22, R134A, R404A and

all other non-corrosive refrigerants which are

within the operating range of the control. They

may also be used for other high or low pressure

applications such as air, water etc. Models

which can be used with ammonia as well as

controls tested, conforming to DIN 32733, and

approved by T
•V are included in the program.

DIN (HP) models are also tested and approved

according to PED 97/23EC Cat. IV.



Description

The P77 series pressure controls may be used

for control functions or limit functions, depending

on model number. All models are provided with

alarm contacts. All standard models have

phosphor bronze bellows and brass pressure

connections. Models for use with ammonia are

provided with stainless steel bellows and

connectors. Devices conforming to DIN 32733

have a double bellows on the high pressure

versions. Their IP54 classification means that

these pressure controls are suitable for almost

all applications.



Feature and Benefits


•Generous wiring space: Easy wiring and maintenance


•Splash-proof enclosure (IP54): Can be used for indoor/outdoor applications


•SPDT contacts are provided as standard on single pressure controls.


•Trip-free manual reset: Can be wired for alarm functions. Override is not possible in the control function



Note

The controls are intended to control equipment under normal operating conditions. Where failure or malfunctioning of the controls could lead to an abnormal operating condition that could cause personal injury or damage to the equipment or other property, other devices (limit or safety controls) or systems (alarm or supervisory systems) intended to warn of or protect against failure or malfunctioning of the controls must be incorporated into and maintained as part of the control system.



Mounting

Mounting can easily be done with mounting

bracket 271-51L (order separately) or directly

on a surface. Mounting holes 4,5 mm diam. and

M4 holes are provided.



Adjustment

Adjustment of range and differential can be done

by turning the hexagonal range screw and

differential screw. Manual reset models have a

range screw only. The adjustment screw can

also be locked by a lock plate accessory

(KIT023N600). The lock plate is only included

with those devices which are conform to DIN

32733.


On all models the scale indicates the high switch

point (Except type P77BCA,P77BCB, here the

scale indicates the low (cut-out) switch point).

The low switch point can be derived by

deducting the differential value from the high

switch point.



Repair and replacement

Repair is not possible. In case of an improperly

functioning control, please check with your

nearest supplier. When contacting the supplier

for a replacement you should state the

type/model number of the control. This number

can be found on the data plate or cover label.



Product Specifications:

Range (bar): 3 to 30

Differential (bar): Manual reset; resetable at 3 bar below cut-out point

Contact Function: 3

Maximum Bellows Pressure: 33



Replaces Part Numbers:

2164797900100030
P77BEA-9350
CARP77BEA9350




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Donald "Brad" Thomas

I would like to thank you for your hard work in getting us our part in a timely fashion. You were very helpful and you understood the severity of the situation and did a wonderful job in getting the part to us. Thanks again and please share this with your boss! You were outstanding!"
Todd Mills

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