Henny Penny 500 Service Manual page 89

ode1
500~6OOl561
As shown in the schematic above, power to the TEM-
PERAT~RE light and to the frypot heaters (or gas
a,,,,, / ::a,
burner) can be controlled by either the low temperature
s? '@&
(temp) thermostat or by the high temp thermostat.
cause the thermostat outputs are wired together, either
one can supply power.
In the CRISP mode, the SOFT/C SP switch is closed
which bypasses the delay timer and routes power to the
high temp thermostat. In this case power will be
supplied to continue heating the frypot until the high
temp thermostat is satisfied, and opens.
In the SOFT mode, the SOFT/CRISP switch performs
no function. The main timer supplies power to pins 1
and 2 of the delay timer as soon as the main timer is
turned on. During the "on" time of the delay timer, it
closes the connection between pins 6 and 7, routing
power to the high temp thermostat.
When the delay timer turns off, the internal connection
between pins 6 and 7 opens, and removes power from
the high temp thermostat. The low temp thermostat is
open, so no additional heat will be supplied to the frypot
until it drops below the setting on the low temp ther-
$2
'%L
mostat.
enever the thermostat fails to maintain the selected
temperature within +5"
of the thermostat setting, it
should be calibrated.
o calibrate the thermostat, it is necessary to perform
step increases in the temperature of the shortening.
Follow this procedure:
e main power switch in the
e sure there is shortening in
2. Set the thermostat knob to 250°F.
3. Allow enough time for the shortening to heat.
When the shortening reaches the set temperature
on the thermostat, the indicator light will go off.
sually, it will take no longer than 15 minutes for ."I
the shortening to'heat to the set temperature.
1. ,J
"