Chromalox PK407-4 - Manual (Page 4)

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.