Kettle Thermometer; Replacement; Calibration - Graco ThermoLazer 200TC Repair Manual

Kettle Thermometer

Kettle Thermometer

Replacement

NOTE: The thermometer can only be replaced while the
material inside the kettle is warm. If material inside the
kettle is cold, it will adhere to the probe and cause it to
separate from the thermometer once it is unscrewed.
1. Empty material from kettle until material level is just
below the thermometer probe (162) (approximately
1 inch of material).
2. Unscrew thermometer (38) from kettle coupling.
NOTE: Look inside the kettle to make sure the
probe is rotating at the same rate as the thermome-
ter as you unscrew it. If the probe is sticking, use the
hand torch to heat the probe and material so that
the probe can rotate freely.
Installation
1. Apply pipe sealant to thermometer (38) threads.
2. Install new thermometer into kettle coupling and
tighten. NOTE: Make sure the face of the thermom-
eter is position toward the front of the unit for opti-
mal viewing (an approximately 15 degree angle).
10

Calibration

To Check Kettle Thermometer Calibration:
1. Move ThermoLazer to an area with no wind.
2. Turn temperature control to 400° F (204° C).
3. Agitate material for 4 to 5 minutes.
4. After control has reached steady state temperature
and burners do not cycle more than once per min-
ute, insert remote calibrated temperature probe in
material and directly adjacent kettle temperature
control probe.
5. Compare temperature of remote calibrated tem-
perature probe to thermometer.
6. If kettle thermometer is lower than the remote cali-
brated temperature probe, turn adjusting screw
counterclockwise.
RESET
7. If the kettle thermometer is higher than the remote
calibrated temperature probe, turn adjusting screw
clockwise.
Adjusting Screw
ti14525b
3A1320L