23
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 #26.
2.
Set On-Off Switch/Temperature Control 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, set On-Off
Switch/Temperature Control to "
10
" (Max.). Allow
the kettle to heat until the unit cycles off.
3.
Switch On-Off Switch/Temperature Control to "
0
" (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 (see
KETTLE JACKET FILLING & DRAINING PROCEDURES
on page #25) and replace pressure relief valve.
See RESERVOIR FILL PROCEDURE (page #24) 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 Gauge
Pressure Relief Valve
