15
Model 5454 Important: To the Operator
Auto
Whent he AUTO keypad is pressed, the light c omes on
indicating that the main refrigeration system has been
activated. In the AUTO mode, the WASH funct ion is
automatically cancelled. The MIX f unction is
automatically locked in to maintain the mix in the
cabinet and the PUMP function is locked in to allow
coaxial air/mix pump operation as required.
Pump
When the PUMP keypad is pressed, the light comes
on indicating that the coaxial air/mix pump will operate
as required.
Note: An indicating light and an audible tone will
sound whenever a mode of operation has been
pressed. To cancel any function, press the keypad
again and the mode of operation will discontinue.
Thermistor Control
The product temperature is adjusted by means of a
thermistor control. Located just above the f reezer door
is the thermistor control knob. Turning the adjusting
knob clockwise will decrease product t emperature and
counterclockwise will increase the temperature. Each
half turn will vary the temperature approx imately two
degrees.Allow t he refrigeration system to cycle on and
off two or three times before the adjust ed temperature
can be evaluated.
Liquid Valve Body Removal Tool
Figure 2
This tool was designed to help remove the liquid valve
body from the pump cylinder. Remove the suction line,
the flare line, the retaining pin and the mix inlet fitting
from the pump cylinder. Turn the air/mix pump
assembly upside down. Insert the curved end under
the edge of the liquid valve body and pull down as
shown in the illustration below.
Figure 3
This will enable you to easily pull the liquid valve body
out of the pump cylinder. To remove the piston, push
downfrom the top end of t he pump cylinder. Toprevent
breakage, do not allow the piston to fall free.