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Part Number 020006402 12/2014
Air Compressor Kits
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1. Align the air compressor assembly over the four (4)
holes on left end of the Multiplex Refrigeration Unit.
Secure to unit using the four (4) 1/4" screws provided in
kit (refer to figure above).
NOTE: Do not plug in pump assembly at this time. Shut “off”
main CO
2
supply to refrigeration unit.
2. Locate the Air/CO
2
Change-over Valve Assembly
supplied with kit (P.N. 00212506). Align the mounting
bracket of the change-over valve over the mounting
holes on the control panel (location for change-over
valve will be marked “Air/CO
2
Change-over Valve”).
Mount the air/co
2
change-over valve to the panel
with the #10-32 screws provided in kit (refer to figure
below).
Tp Ourler Firriag
pf Aio PuIm
Aio/CO
2
Chtage-pveo
Vtlve
Tp Syoum Ttak
Summly Mtaifpld
Tp CO
2
Summly
Mtaifpld
CO
2
Cparopl Ptael
asrtlliag rhe pmripatl duIm vtlve parp rhe Mulrimlex
oefoigeotripa uair
1. Connect the 1/4" line assembly provided in kit (P.N.
00212506) to the flare fitting on right side of air/CO
2
change-over valve. Route the other end of tubing
to the CO
2
supply manifold. Trim excess line and
connect swivel nut adapter to the remaining end of
line assembly. Secure with tab clamp. Connect the line
assembly to the CO
2
supply manifold (refer to figure
below).
8 fr Leagrh pf Tubiag
rp Flppo Dotia
3 fr Leagrh
pf Tubiag
DuIm Vtlve
Aio Ttak
CpImoessipa
Elbpw
Mpuariag rhe DuIm Vtlve parp rhe
Mulrimlex Refoigeotripa Uair
2. Locate the 4-1/2" section of 1/4" tubing connected at
bottom side of change-over valve. Route and connect
the remaining end of tubing to the syrup tank supply
manifold (refer to figure above).
3. Locate the 12 ft x 1/4" EVA line assembly provided in
air compressor kit. Attach the end of this line assembly,
with the swivel nut, to the outlet fitting of the air
compressor tank. Use 1/4" flare washers at swivel nut
connectors. Neatly route tubing under the stand top
and to the left side of the control panel. Connect the
line assembly with 1/4" elbow x barb (provided in kit
P.N. 00212506) to the 1/4" male flare fitting of the air/
CO
2
change-over valve (refer to figure above).
4. Locate the dump valve supplied with kit. Mount the
dump valve with #10-32 self-tapping screws provided
with kit to lower left cross channel of support stand.
5. Locate the 3 ft length of tubing supplied with kit.
Neatly route and attach this line from the air tank
compression elbow to the shut-off valve compression
fitting located on top of the dump valve. Trim tubing to
correct length. Tighten compression nuts.
6. Locate the 8 ft length of tubing supplied with kit. Route
and connect this line from the 1/4" barb elbow of the
dump valve to a floor drain. Place the shut-off valve
handle in the “open” position (refer to figure above).
7. Plug the air pump power supply cord into the power
receptacle provided on wall. Pump will begin to run
immediately and shut “off” when tank pressure reaches
approximately 90 psi (6.2 bar). Pump will turn “on” when
tank pressure drops to 70 psi (4.8 bar). If not, adjust
pressure switch according to instructions located on
the inside of pressure switch cover.
8. Turn the air/CO
2
change-over valve to the “Air” position.
Check for leaks.
