Danfoss KPU 74 Installationshandbuch - Seite 4

Blättern Sie online oder laden Sie pdf Installationshandbuch für Thermostat Danfoss KPU 74 herunter. Danfoss KPU 74 4 Seiten.

Seite drucken

Adjustment

NOTE:

Adjust the tharmostat to settings specified by the

manufacturer of the controlled equipment. When

checking thermostat operation, or operating

the controlled equipment, do not exceed the

manufacturer's temperature ratings for the controlled

equipment or for any of its components.

To avoid inaccurate thermostat operation, do not

adjust the KPU's pointers beyond the highest or lowest

indicator marks on the scale plate.

Before adjustment loosen the locking screw.

For setting use Universal Refrigeration Wrench or the setting

knob, if available. Movement of the setting knob is limited

by the locking screw, which allows only small corrections to

the settings. Therefore, if the setting knob is to be used for

adjustments, completely remove the locking screw. After

adjustment, tighten the locking screw.

A: Setting knob

B: Locking screw

C: Range adjusting screw

D: Differential adjusting screw

E: Cover screw

Manual switch

Available only on KPU 61 (060L5210) and KPU 62 (060L5207),

the manual switch is a two-position switch used to shut down

the refrigeration system. The two positions are:

1. AUTO: position for automatic operation.

2. STOP: contacts 1 and 2 are locked in the closed position.

CAUTION:

The manual switch only stops automatic operation,

and can only be used for service on non-electrical

parts. Interrupt mains power before servicing

electrical parts.

Adjustment: thermostat with automatic reset

Scale plate directly indicates High Switching Point

and Differential.

Adjustment: thermostat with manual reset

Scale plate directly indicates Low Switching Point, which is

Cut-Out. There is no pointer for Differential.

Differential value is fixed and printed on the scale plate.

DKRCC.PI.CD0.A3.22 / 520H8467

1. Set High Switching Point by

adjusting range screw. Turn the

screw clockwise to lower the set

point.

2. Then set Differential by adjusting

differential screw. Turn the screw

clockwise to increase Differential.

3. Low Switching Point is equal

to High Switching

Point less Differential:

LOW = HIGH - DIFFERENTIAL

1. Set Cut-Out (Low Switching Point)

by adjusting range screw. Turn

the screw clockwise to lower

the set point.

2. High Switching Point (Cut-In)

equals Low Switching Point

(Cut-Out) plus Differential:

CUT IN = CUT OUT + DIFFERENTIAL

IMPORTANT:

The scale plate is only for reference and for more

precise setting a temperature gauge should be used.

IMPORTANT:

After installing and adjusting the thermostat, check

your settings by running the controlled equipment

several times (at least three times) under normal

operating conditions.

manual switch