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15
Mod el 5454 Important: To the Operat or
Auto
When the AUTO k eypad ispressed, th elight comes on
indicating that the main refrigeration system has been
activated. In the AUTO mode, the WASH function is
automatically cancelled. The MIX function is
automatically locked in to maintain the mix in the
cabinet and the PUMP function is locked in to a llow
coaxial a ir/mix pump operation a s required.
Pump
When the PUMP keypad is pressed, the light comes
on indicating that the coaxial air/mix pump will operate
as r equired.
Note: An indicati ng 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.
Thermi stor Control
The product temperatur e is adjusted b y means of a
thermistor control. Located jus t above the freez er door
is the thermist or c ontrol knob. Turning the adjus ting
knob clockwise will decreaseproduct temperatur eand
counterc lockwise will increase the te mperature. Each
half turn will vary the temperatur e approximately two
degrees. Allow therefr igeration system t ocycle onand
off two or three times befor e the adjusted temperature
can be evaluated.
Liquid Valve Body R emoval Tool
Figure 2
This tool was designed to help remove the liquid valve
body from the pump cylinder. Remove the suctionline,
the flare line, the retaining pin and the mix inlet fitting
from th e pump cylinder . Turn the air/m ix pump
assembly ups ide down. Insert the curved end under
the edge of the liquid v alve 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 pis ton, pus h
down from the top end of the pump cylinder. To p revent
breakage, do not allow the piston to fall free.