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17
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 18 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/Gauge Assembly Drawing
PRESSURE RELIEF VALVE
PERIODIC TESTING
PROCEDURE
Most insurance agencies require periodic testing of
pressure relief valves used on pressure vessels. This
procedure will allow you to safely and quickly test your
kettle's pressure relief valve. We recommend this test be
performed twice a year.
NOTE: The following instruction is intended for use by
qualified service personnel.
WARNING: Kettle surface will be hot and steam will be
released during testing. Take necessary precautions
including the use of gloves and eye protection to
prevent personal injury.
1. Remove guard bracket from pressure relief
valve/gauge assembly.
2. With the kettle empty, turn unit ON and set
temperature control to 10 (Max.). Allow the kettle to
heat until the unit cycles off.
3. Switch unit OFF and disconnect main power at
fused disconnect switch.
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.
5. Replace guard bracket from pressure relief
valve/gauge assembly.
If valve appears to be sticking replace pressure relief
valve.
If foreign material is discharged then drain kettle and
replace pressure relief valve.
See Reservoir Fill Procedure (page 18) for full instructions
on the correct method for refilling kettle jacket.
WARNING: Improper refilling of kettle jacket will result
in irreversible damage to unit.
NOTE: Rust inhibitor is purchased locally. Read
directions and do not exceed manufacturer's
recommendation (excessive rust inhibitor can also
cause solidification).
DANGER: PRESSURE RELIEF
VALVE WILL EXHAUST HIGH
TEMPERATURE STEAM. CONTACT
WITH SKIN COULD RESULT IN
SERIOUS BURNS. KEEP FACE,
HANDS AND BODY CLEAR OF DISCHARGE.
DANGER: WORKING ON MACHINES
WITH POWER COULD RESULT IN
SEVERE ELECTRICAL SHOCK.
WARNING: IMPROPER REFILLING OF
KETTLE JACKET WILL RESULT IN
IRREVERSIBLE DAMAGE TO UNIT.
Guard Bracket
Pressure Guage
Pressure Relief Valve