Graco 257500, 258699 Kettle Thermometer Calibration, Adjust Kettle Pilot Ignitor Electrode Gap

Models: 257500 258699

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Kettle Thermometer Calibration

Kettle Thermometer Calibration

To Check Kettle Thermometer Calibration:

1.Move ThermoLazerto 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 temper- ature probe to thermometer.

6.If kettle thermometer is lower than the remote cali- brated temperature probe, turn adjusting screw counterclockwise.

Adjusting Screw

RESET

ti14525a

7.If the kettle thermometer is higher than the remote calibrated temperature probe, turn adjusting screw clockwise.

Adjust Kettle Pilot Ignitor Electrode Gap

1. Loosen screw (231).

.17 to .20 in.

2.Rotate ignitor electrode (7) until gap of .17 to .20 in. (.43 to .51 cm) is achieved.

3.Retighten screw (231).

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ti14519a

313879B

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Graco 257500, 258699 important safety instructions Kettle Thermometer Calibration, Adjust Kettle Pilot Ignitor Electrode Gap