Submittal Sheet

Table Of Contents

15.

18.

KP 7W (KP 7B), are

KP 7W (KP 7B), capillary tube

KP 17W (KP 17B), are

Pressure setting spindle, (LP)

Dierential setting spindle

Main arm

Pressure setting spindle, (HP)

Cable entry

Locking plate

The KP with designations W or B have been tested and approved by TÜV (Germany) in accordance with EN 12263.

Versions with designation W will cut in automatically when the pressure has fallen to the setpoint minus the

dierential.

Versions with designation B can be cut in manually using the external reset button when:

KP 1 – the pressure has increased to 10 psi above the setpoint.

KP 7 – the pressure has fallen 58 psi below the setpoint.

KP 7 and KP 17 are equipped with fail-safe double bellows; a regulation bellows and an outer bellows. The double

bellows system protects against loss of system charge in the event of a bellows rupture.

A rupture in the outer bellows will cause the control to trip approximately 43 psi lower than the actual control

setting. This features provides a warning without a loss of charge.

All KP pressure switches, including those which are PED-approved, operate independently of changes in the

ambient temperature around the control housing. Therefore the set cut-out pressure and dierential are kept

constant provided the permissible ambient temperatures are not exceeded.

Terminology

Reset

1.Manual reset: Units with manual reset can only be reset during operation by activation of the reset button.

2.Automatic reset: After operational stop, these units reset automatically.

Maximum working pressure

The Maximum working pressure is determined by the pressure that can be safely allowed in the refrigerating system

or any of the units within it. The maximum working pressure is designated MWP.

Pressure switch, Type KP