Troubleshooting Guide - Lang 36S Installation, Operation, Maintenance And Troubleshooting Manual

SYMPTOM
Not heating
Thermostat Inoperative
Temperature Fluctuation
Pilot Light Out
Power Supply Circuit Breakers
Trip
Internal Circuit Breakers Trip
Too long to heat
PERFORMANCE AND INSPECTION
A periodic check of thermostat calibration should be performed.
Calibration Check:
Put a surface type thermometer or thermocouple in the center of each top section.
Set thermostat knobs to 350° F and allow the plate to cycle for 30 minutes.
Then take 10 readings each 3 minutes apart and calculate the average temperature.
After calculating the average temperature check the reading when the pilot light goes "ON" and again
when the pilot light goes "OFF" three consecutive times. It the "ON" and "OFF" temperature reading
drift in either direction, the plate has not yet reached stabilization temperature.
When stabilized, the "ON" and "OFF" temperature should fall within a plus or minus 25° F of the
temperature set on the dial.
NOTE: If these requirements are met., the thermostats do not need calibration adjustment.
MAJOR COMPONENT DISASSEMBLY, REPAIR, REPLACEMENT AND REASSEMBLE:
Refer to Figure #3
WARNING: Disconnect Range from power before attempting any repair.
TROUBLE SHOOTING GUIDE
PROBLEM
Loose Terminal Connections
Improper Voltage
Defective Elements
Broken Capillary Tube
Loose Connections
Improper Voltage
Out of Calibration
Defective
Supply Breakers insufficient size
Supply voltage & range voltage
do not match
Supply voltage & range voltage
do not match
Improperly Phased
10
REMEDY
Tighten Terminals
Change Voltage to match Range
Replace Elements
Replace Thermostat
Tighten Terminals
Change Voltage to match Range
Recalibrate Thermostat
Replace
Install proper size breakers
Change voltage to match range
Change voltage to match range
Phase range to match power
supply per wiring diagram