Watlow Series 92 - Manual (Page 11)

WATLOW Series 92 User's Manual
11
Troubleshooting Chart
The Watlow Series 92 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 units have not been misapplied.
Since Watlow has no control over their use, and
sometimes misuse, we cannot guarantee against
failure. Watlow's obligations hereunder, at Watlow's
option, are limited to replacement, repair, or refund of
purchase price, any parts which upon examination
prove to be defective within the warranty period
specified. This warranty does not apply to damage
resulting from transportation, alteration, misuse or
abuse. This excludes mechanical relays which are
warranted to 100,000 cycles.
Warranty
Problem Probable Cause Action
Poor temperature The proportional band is not Adjust the proportional band per Tuning.
control. adjusted properly. See Page 9.
The load will 1. An open sensor. Repair or replace.
not turn ON.
2. The load circuit is open. Check the fuses, circuit breakers, load,
and wiring. See
Line Voltage, Page 5..
3. The AC input is not connected or Check the AC input connections. If not
is connected improperly. present or proper, connect per Line Voltage.
See Page 5.
4. A faulty unit. Contact the factory.
The load will 1. The polarity is reversed on the T/C. Connect per Input Wiring. See Page 6,
not turn OFF. Figure 6.
2. A faulty unit. Remove power to the control and the control
from the system. Apply power to the system
with the control removed. If the load turns
OFF, return the control to the factory. If the
load remains ON, there are other problems in
the system that must be resolved. Consult
the factory.
The unit is not con- The unit is out of calibration Contact Watlow for an RMA number, and
trolling to set point. return unit to the factory to be calibrated.
material. A 20 percent restocking charge is
applied for all returned stock controls and
accessories.
5. If the unit is unrepairable, it will be returned to you
with a letter of explanation. Repair costs will not
exceed 50 percent of the original cost.
Returns
1. Call Watlow Customer Service, 507/454-5300, for
a Return Material Authorization (RMA) number
before returning any item for repair. We need this
information:
• Ship-to address
• Bill-to address
• Contact name • Phone number
• Ship via • P.O. number
• Symptions and/or special instructions
• Name and phone number of person returning
the material.
2. Prior approval and an RMA number is needed
when returning any unused product for credit.
Make sure the RMA number is on the outside of
the carton, and on all paperwork returned. Ship
on a Freight Prepaid basis.
3. After we receive your return, we will examine it
and determine the cause for your action.
4. In cases of manufacturing defect, we will enter a
repair order, replacement order, or issue credit for