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Renewal parts identification, Calibration (cont’d.) – Chromalox PK407-4 User Manual

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1347 HEIL QUAKER BLVD., LAVERGNE, TN 37086

Phone: (615) 793-3900 www.chromalox.com

RENEWAL PARTS IDENTIFICATION

027-057548-00

Mounting Brack

119-114623-003

152-025660-004

Housing

1

4

2

3

Thermostat

Thermostat

Model

Sub-Assembly

Dial Knob

Cover

Base

AR-2153

300-047848-002

169-019604-001

080-024763-001

015-013819-001

AR-2153P

300-047848-002

169-019604-001

080-026032-007

015-013819-001

AR-2193

300-047848-001

169-019604-001

080-024763-001

015-013819-001

AR-2193P

300-047848-001

169-019604-001

080-026032-007

015-013819-001

AR-5153

300-047848-004

169-019604-002

080-024763-001

015-013819-001

AR-5153P

300-047848-004

169-019604-002

080-026032-007

015-013819-001

AR-5193

300-047848-003

169-019604-002

080-024763-001

015-013819-001

AR-5193P

300-047848-003

169-019604-002

080-026032-007

015-013819-001

CALIBRATION (cont’d.)

For either method the following general calibration procedures

should be followed.
1. Remove knob cover, knob and thermostat housing as per

instructions 3, 4 and 5 under WIRING.

2. Replace knob and turn to highest temperature setting.
3. Slowly turn knob and when controls click “off”, compare the

dial reading against the thermometer reading.

4. If they do not agree —

A. Set dial knob to thermometer temperature reading and pull

off knob.

B. While holding the adjusting shaft (B) tightly, turn small

center adjusting screw (A) with small screwdriver (C) until
thermostat “clicks” (see Figure 12).
Note: Always use extreme care not to damage the slot in the
center adjusting screw.

C. Each quarter turn of the screw will change the calibration

approximately 30°F:
— Clockwise to decrease temperature.
— Counterclockwise to increase temperature.

D. Recheck calibration and repeat process if closer calibration

is required.

Limited Warranty:

Please refer to the Chromalox limited warranty applicable to this product at

http://www.chromalox.com/customer-service/policies/termsofsale.aspx.

This manual is related to the following products: