
107
Operation
How the Multiplex Works
The refrigeration units are remote refrigeration units
that derive their peak capacity from the water/glycol
bath. A tower is used to dispense the beer at the
desired location. Conduit (an insulated bundle of
tubing) connects the refrigeration unit and kegs of beer
to the tower. The conduit has the beer and glycol lines
wrapped together and the glycol is circulated to keep
the beer in the conduit lines cold. The refrigeration
system is controlled by a sensing bulb located on an
adjustable bracket in the glycol bath. Depending on
the setpoint of the temperature control, the
refrigeration system cycles ON and OFF as the
temperature of the glycol bath changes.
Start-up
PLACING EQUIPMENT IN OPERATION
Before placing equipment in operation, verify that all
requirements for roof mounted Remote Condenser
Units (if applicable) have been satisfied. Refer to the
instructions on installing the Remote Condenser.
UNITS WITH ROCKER SWITCHES (ETC
CONTROLS)
1. Fill the refrigeration unit bath tank with (3:1) water/
glycol mix to within 1/2" (1.27 cm) of the top of the
overflow tube.
2. Turn on the rocker switch labeled “Refrigeration”
to begin cooling the glycol and energize the
agitator motor in the glycol bath.
3. The water/glycol bath will reach it’s operating
temperature within 2 to 4 hours.
4. If optional CO
2
/N
2
Control Panel has been
installed, refer to the installation instructions for
operation and testing the circuits for leaks.
5. All circuits must be checked for leaks and
possible cross circuits before turning ON.
STH13_Tech.book Page 107 Wednesday, September 15, 2010 3:20 PM