Field calibration, Warranty, Returns – Watlow Series 101 User Manual
Page 4: Technical support, Troubleshooting, Trim 5/8 inch
Watlow Series 101 User’s Manual
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Check sensor element location for proper
temperature response.
Calibrate the unit following the field
calibration procedure above.
Sensor is not measuring actual tempera-
ture.
Unit is out of calibration.
Controller is out of calibra-
tion.
Check for open sensor element or open
sensor lead wires.
Check sensor wiring. See wiring page.
Sensor is not wired correctly.
Relay will not energize, ac
voltage is present, and the
controller is wired correctly.
Check wiring. See wiring page.
Check fuses or circuit breakers.
Check power sources.
Voltage is not present at ac input or load
output.
Control will not operate.
Action
Probable Cause
Problem
Required Equipment
• A calibration quality portable temperature indicator.
• A sensor for the portable indicator.
Setup
1. With the Series 101 installed in your system, set the
controller to your desired set point.
2. Apply power to your system and allow it to stabilize.
Procedure
1. Measure temperature at the point you wish to control
(near the Series 101 sensor) with a portable tempera-
ture indicator.
2. Adjust the Series 101 until the portable indicator reads
the average of the system temperature variations as the
Series 101 switches on and off.
3. Carefully pull the Series 101 knob straight off the D-
shaft.
4. Slightly loosen the two screws on the back of the knob.
5. Carefully replace the knob on the D-shaft without
moving the shaft.
6. Read the portable indicator. Then hold the black part of
the knob in place while turning the clear plastic skirt to
match the portable indicator reading. Simply put the
white line on the clear skirt over the dial scale position
which is the average of the portable indicator readings.
7. Carefully remove the knob from the D-shaft again and
tighten the screws.
8. Replace the knob on the shaft and check the portable
indicator for agreement. Repeat as required.
The Series 101 is warranted to be free of defects in
material and workmanship for 36 months after delivery to
the first purchaser for use, providing that the unit has not
been misapplied. Since Watlow has no control over its use
or misuse, we cannot guarantee against failure. Watlow’s
obligations hereunder, at Watlow’s option, are limited to
replacement or refund of purchase price of a unit which
upon examination proves to be defective within the war-
ranty period. This warranty does not apply to damage
resulting from transportation, alteration, misuse or abuse.
• Call or fax Customer Service for a Return Material
Authorization (RMA) number before returning a prod-
uct.
• Put the RMA number on the shipping label, and also a
description of the problem.
• A 20% of net price restocking charge applies to all
standard units returned to stock.
Contact:
• Phone: +1 (507) 454-5300
• Fax: +1 (507) 452-4507
If you encounter a problem with your Watlow con-
troller, verify that your wiring is correct for your specific
model number. If the problem persists, an Application
Engineer can discuss your application with you.
Before calling, please have the complete model num-
ber and user’s manual available. You can get technical
support by dialing +1 (507) 454-5300, 7 a.m. to 7 p.m.
Central Standard Time.
The Series 101 User’s Manual is copyrighted by
Watlow Winona, Inc., © 2001, with all rights reserved.
(2059)