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Caution:
Disconnect
all
electrical
power
to
the
cooler and insure that belt
is not rotating
before
ad-
justing
belt
tension.
Do
not adjust belt tension by
changing
dlamefer
of ad-
justable
sheave.
Adjust
belt tension
only by ad-
justing
motor brackeL
Rotate blower wheel by hand to see that it
moves
freely
without
rubbing against
housing.
Check
motor mountinq
to be sure all
screws and nuts are tightened down.
If cooler is connected to ductwork, air
delivery and motor amperage will be de-
creased due to increased duct resistance.
To compensate for this, the motor pulley is
adjusted out or in. using an ammeter to
check motor amperage. For maximum air
flow check motor amperage with all ser-
vice panels in place. To prevent overload-
ing of the motor, check amperage with all
windows and doors open and all relief
systems
operating.
Tighten pulley set
screw to 125 in-lbs.
A qualified serviceman is required to ad-
just motor before start-up.
Caution: Do not exceed
maximum amperage out-
put as stamped on the mo-
tor specification
plate or
motor can overload.
Only
qualified persons
with proper electrical
equipment
and knowledge
should ad-
just variable pitch sheaves. Do not allow
water to get on the motor, as it will burn
out the windings.
Note on multi-speed switches: A switch
with separate terminals for the pump is
recommended.
Install Overflow
Standpipe and Drain Line
Install overflow drain bushing in bottom
wet section on the right side. Screw plastic
overflow standpipe into the drain bushing
and tighten snugly. Slide rubber washer
over drain bushing, push through bottom
of cooler, and tighten nut, Connect a per-
manent drain (copper/pvc/garden hose) to
the drain bushing for draining the unit and
overflow protection.
Drain should be in
accordance
with local plumbing codes.
FTgure4
WASHER
4 • MesterCooP II
Connect Water Supply
Connect water line to cooler as follows:
• A water valve should be installed at a
convenient location, to allow the water
supply to be turned on and off. 1/4" tubing
is used to provide water to the cooler. A
water connector kit, availubte from your
dealer provides the necessary items.
• Install float valve in the side panel of the
wet section opposite the pump.
• Place tube nut and ferrule over end of
tubing.
• Insert tube into float valve, and tighten to
Secure.
qOTE: Soft water equipment should not be
mttached to any water lines going "to a
ooler. "Soft Water" will cause corrosion
md decrease effective life of cooler.
Figure
$
COMPRESSION
NUT
FERRULE
•
_.
_RULE___
Fasten 1/4 inch water supply line to cooler
stand using tubing clamp and self-drilling
screw. Locate tubing clamp 18 inches or
less from water supply line entry into cabi-
net. (See Figure 5A)
f
SI_LF-DRtLUNG
SCREW
1/4" WATER
SUPPly LINE
Faucet Use
Connect water line to water supply, as fol-
lows (refer to Figure 6).
• Install a sillcock and water valve on
faucet, as shown. Place tubing nut and
ferrule on tube end and insed in valve.
Tighten nuts on valve and tube.
l( faucet is not to be used for water supply,
instal lvalve on water line to be used. Follow
instructions above for securing tubing to
valve.
Figure 6
.,_,_
|t_--TUBING FROM
FAUCET
,
• "
F.nau.E
vW',v .
SILLCOCK
Adjusting Water Level
and Float Valve
Fill reservoir as follows:
• Turn water supply on. Check for good
pressure and flow from float valve.
• When float valve shuts off. check water
level. Water level should be from 1/2 to
1 inch below top edge of overflow
standpipe. It may be necessary to adjust
float valve by bending the rod (refer to
Figure 5).
• Check reservoir and all connections for
leaks.
Install Bleed-Off
A bleed-off system is provided with your
MastsrCoo| cooler. We recommend the
bleed-off be installed
and maintained
while operating this unit. Its purpose is to
eliminate a small quantity of water from
recirculatlon thus reducing scale build-up.
Rgure 7
Install bleed-off as
follows:
• Install 1/4" black
plastic tubing into
pump as shown in
Figure 7.
• Insert smaller
black plastic
tubing into 114"
tubing as shown
in Figure 7.
Adjust bleed-off by shortening smalltube to
get the proper bleed rate shown below.
Disposal of bleed-off water shouldcomply
with local codes. Use of chemical additives
or any water treatment other than bleed-off
is not recommended for thiscooler. Failure
to use the bleed-off with MasterCool pad
greatly increases the mineral deposits and
reduces
the
expected
life
of
the
MasterCool pad. and could result in early
replacement of pad at your expense.
SECONDS T OFILLA 12 OZ.CAN
Model
MC43/44
MC43/44
HC43144
HC43/44
MC63;64
MC63/64
HC63/64
HC63/64
Motor Hp
Seconds to fill
1/2
100
3/4
80
1/2
80
3/4
65
3i4
70
1,0
60
314
60
1.0
50
Install Float Shield
• Install shield over float valve as shown in
F)gure 8.
• Loop of cotter pin fits into hole in shield.
• Cotter pin loop and hole must face
MasterCool pad.
IEIIT'_p
R PIN
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