Cleveland KET-20-T Service Manual download pdf (Page 18)

CALIBRATING PROCEDURE

1. Insure the unit has a vacuum before you

begin calibrating procedures. If unit requires

venting refer to Kettle Venting Instructions on

page 17 of this manual.

2. Turn kettle on and set temperature dial to 10

(Max.).

3. Allow the unit to cycle twice.

4. Check temperature of the inner kettle surface

with a digital surface thermometer.

5. Temperature should be between 260° F and

265° F.

6. Using a screw driver adjust temperature by

turning the potentiometer on the black box.

Turn very little. Turn clockwise to INCREASES

and counter-clockwise to DECREASE

temperature.

7. Allow the unit to cycle twice.

8. Check temperature of the inner kettle surface

with a digital surface thermometer.

9. Repeat steps 4 through 8 until unit is calibrated.

PRESSURE RELIEF VALVE

TESTING PROCEDURE

The pressure relief valve must be checked at least

twice a year as part of the normal maintenance

performed.

1. With the kettle empty, turn unit ON and set

temperature control knob to 10 (Max.). Allow the

kettle to heat until the unit cycles off.

2. Switch unit OFF and disconnect main power at

fused disconnect switch.

3. Remove bottom cover.

4. Stand to the side of the pressure relief valve

discharge tube and pull valve open for a

maximum of one second. Repeat test three to

four times. Each time the mechanism should

move freely and be accompanied by a rapid

escape of steam

WARNING

Kettle will be hot. Use gloves for protection.

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Cleveland KET-20-T Service Manual Page 18