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Installation & Operating Instructions
For Goettl Evaporative Coolers
Roof Or Wall Mounted
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Maintenance
WATER CONTROL:
Coolers are controlled manually by line valve. Turn
valve on until water flows freely from all water distributor tubes and in
sufficient quantity to thoroughly soak pads. Before turning on motor, let
water run a few minutes to remove dust from pads and prevent delivery of
untreated air.
ADJUSTABLE MOTOR PULLEY:
Adjustable motor pulleys are set at the
factory for maximum motor load and maximum air delivery of cooler not
connected to a duct and register system. When cooler is connected to a
duct system, the cooler air capacity and motor amperage decreases due to
static pressure duct resistance. The adjustable motor pulley is used ONLY
to compensate for duct system resistance by returning cooler and motor to
maximum load capacity and should not be adjusted except for this purpose.
CAUTION:
When it is necessary to adjust pulley, AMPERAGE
OF MOTOR MUST BE CHECKED TO MAKE CERTAIN IT DOES NOT EXCEED THE MAXIMUM
ALLOWED AS STAMPED ON MOTOR SPECIFICATION PLATE.
Only a person with
proper electrical equipment and thorough knowledge of adjustable pulleys
should attempt adjustment of motor pulley on your cooler.
IMPROPER PULLEY ADJUSTMENT COULD OVERLOAD AND BURN OUT MOTOR.
BELT ADJUSTMENT:
Correct belt tension and alignment is important as
it cuts power consumption and prolongs life of belt and motor. When
installing or adjusting belt, loosen the four motor mount bolts and adjust
until belt can be easily deflected 1/2 to 3/4 of an inch. DO NOT
TIGHTEN BELT BY ADJUSTING MOTOR PULLEY. Align belt vertically by
centering motor pulley in-line with blower pulley. Re-tighten the four
motor mount bolts.
AIR EXHAUSTING:
Windows or doors at a point most distant from
cooler air inlet should be left open to permit free movement of air out of
area being cooled, and avoid building up static pressure. Proper location
of exhaust openings is important as they guide flow of air through areas
where cooling is desired.
WATER CONTROL:
The overflow standpipe screwed into drain bushing
forms a water reservoir of the cooler bottom. The floating valve regulates
water supply into cooler reservoir. The depth of water is regulated by
loosening the float adjustment screw and raising or lowering float until
water level remains approximately 2 1/2 deep. If manual valve is
present in water supply line, open valve and allow to remain open during
the cooling season. Water flow to cooler pads is furnished by the
recirculating pump, and the desired amount of water is regulated by the
water check clamp located on pump hose between pump and water distributor.
BLEED OFF ATTACHMENT KIT:
A small, pinpoint amount of
"used" water is bled off or discarded whenever the pump is in
use. This keeps the water fresh and free from mineral concentrations.
CLEANING:
The cooler cabinet and recirculating pump should be
periodically inspected, cleaned and all scratches or bare metal should be
covered with suitable protective paint. To prevent excessive deposits of
water minerals and sediment, the reservoir pan should be cleaned at least
every sixty days of operation. When a recirculating pump is used, remove
overflow standpipe from drain fitting and allow water to drain. thoroughly
clean pump and components making sure that impeller is free before cooler
operation. Replace standpipe and fill reservoir. Operate cooler 15
minutes, then allow all water to drain through, thus cleaning entire
system. always drain water reservoir completely when cooler is not in use
over prolonged periods and particularly at end of cooling season.
OILING:
All motors and blower shaft bearings are oiled at the
factory, but should be checked before operating cooler. If need for oiling
is indicated, use any good grade S.A.E. No. 20 or 30 oil. Apply 2 or 3
drops of oil to each oil cup on cooler motor and pump motor. The oil cups
on blower shaft bearings should be filled. Under normal use, oiling is
required every three months of operation.
THE SLIDING DAMPER:
(Optional) On the blower, housing should be
closed in the fall to keep cold air from entering the building. For
pre-season cleaning, with the damper still closed, the blades of the
blower are accessible for cleaning through the opening in the blower
housing, this makes it possible to keep debris from entering the home.
IMPORTANT:
Before operating cooler at the beginning of each cooling
season, turn blower wheel, cooler motor and pump motor shafts by hand to
make sure they turn freely. Failure to do this may result in burning out
motor.
FILTER PADS:
Filter pads should be replaced with fresh aspen fiber
excelsior and DUSTRAP filter at least once a year, at the beginning of
each cooling season. The need for changing pads more frequently varies
with locality and rapidity with which dirt, alkali, and other foreign
matter accumulates in pads. If cooling efficiency is impaired, it may be
desirable to change pads several times during cooling season.
PAD REPLACEMENT:
1. With louvered panel Lying on flat surface, wire retainer face up, grasp
retainer in center and pull upward, thus bowing retainer, at the same time
pulling out ends of wire from underneath flange of louvered panel.
2. Clean louvered panels, if necessary.
3. Replace pad with new material, being sure pad is of uniform thickness,
without voids, which permit untreated air to enter the cooling system.
4. Replace wire pad retainer and reverse steps to complete pad replacement
in same manner as removal.
MOTOR REPLACEMENT:
The motor can easily be replaced by removing plug from junction box and
removing motor clamps.
CAUTION:
DISCONNECT ALL ELECTRICAL POWER SOURCE PRIOR TO PERFORMING ANY
MAINTENANCE ON UNIT.
Remove louver panels using lower handles. Do not remove panels by
inserting hands into open louver sections.
Replace motor and motor cord, and secure motor with clamps. Secure motor
sheave and connect motor plug to junction box receptacle. Turn on power
and check amp draw on motor. Adjust motor sheave as necessary (See Belt
Slipping Or Wearing Excessively).
Turn off power and secure louver panels. Turn on power.
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