Installation
CAUTION: Make sure that the mounting surface is strong enough to support the operating weight of the cooler when in use. (For operating weight, see Specification Table.)
CAUTION: Never start cooler until installation is complete and unit has been tested for rigidity.
CAUTION: This unit must be installed at a height of 10 feet or greater from the floor.
Electrical Installation
NOTE: Local building code regulations must be observed.
WARNING: Disconnect all electrical service that will be used for this unit before you begin the installation.
•Connect electrical. Cooler must be connected to the proper line current, voltage and cycle, as indicated on the decal located at the electrical service entrance. Connecting improper voltage to motor will void motor warranty. See the wiring diagrams (figures 8 & 9) on page 3 for wiring electrical connections.
NOTE: A separate 120 Volt, 60 Hz, 1 phase pump electrical circuit is required to maintain the integrity of the GFCI pump protection and to maintain the U.L. Listing of the evaporative cooler.
•Wire gage. The horse power, voltage, cycle, phase, current, and length of wire required from switch to motor will determine the gauge of wire to be used.
•Switches. Larger horsepower and three phase applications require switches (not supplied) of proper current capacity and should be installed by a competent electrician.
•Connect water supply line. A water supply line should be run to the cooler to supply an adequate amount of cold water to the unit. The amount of water each cooler uses will depend on the weather conditions in your area and the size of your unit. The hotter and dryer your climate and the higher the capacity of your unit, the more water will evaporate. For example: An FAD248 unit with a 2 hp motor will use approximately 85 gallons per hour in a hot and dry climate like Las Vegas on a 105°F day with 10% humidity. The same unit in a cooler climate with 95°F and 20% humidity would use approximately 63 gph.
NOTE: Do not connect the water supply line to any soft water applications.
•Install float valve and fill pan. Refer to Fig. 3. Remove items 1,
2, 3, and 4. Insert float body (5) through hole in back post panel as
shown. Install washer (1) and nut |
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(2). Tighten to keep float from |
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turning. Place nut (4) and ferrule |
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(3) on water supply line. Con- |
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nect to float fitting and tighten until | 7 |
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water tight. Loosen screw (6) and |
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adjust rod (7) until water level is |
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within 1" of top of reservoir. Tighten screw (6). Slide float shield (8) up over float body (5) until it snaps into place.
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• Power Supply box. The |
power supply box is lo- |
cated in the upper inside |
of the divider channel. |
Power
Supply
Box
Maintenance
WARNING: Before doing any maintenance be sure to dis- connect from power source. This is for your safety.
Remove the cover to ac- |
cess wiring. (Fig. 1). |
Connect wiring in box to |
power supply wiring as |
per wiring diagrams. |
Cover
Fig. 1
Spring Start-Up
• Check belt tension. A 3 lb. force |
should deflect the belt 3/4 inches |
(see Fig. 4). Readjust belt if |
needed. |
3 Lb.
3/4 Inches
WARNING: Make sure that cooler cabinet is properly grounded to a suitable ground connection for maximum safety.
Water Connection
•Pumps. Plug the pumps into the pump receptacles. There are metal cord retaining clips on the corner post and motor cross braces for retaining the pump cords.
CAUTION: The pump cord must be secured to prevent it from dropping into water reservoirs or contacting moving com- ponents.
• Install overflow assembly. Remove |
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nut and place nipple through the hole | Overflow Pipe | |
in the pan, with the rubber washer | ||
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between the pan and the head of the | Nipple |
To adjust belt, loosen the two |
hinge nuts and the locking nut on |
the adjusting bolt as shown in |
figure 5. Loosen or tighten the |
adjustment nut until the belt is |
at the right tension. Lock the |
motor plate in place by tighten- |
ing the locking nut and then |
tighten the 2 hinge nuts. |
• Grease bearings. The shaft |
bearings in this unit should be |
greased once a year with a good |
grade of ball bearing grease. |
Fig. 4
Adjustment Nut
Hinge
Nut
Hinge | Fig. 5 |
Nut |
drain nipple (Fig. 2). Screw on nut | Rubber Washer |
and draw up tight against bottom of | Bottom Pan |
pan. Insert overflow pipe in nipple | Nut |
to retain water. Overflow pipe may | Fig. 2 |
be removed to drain pan when neces- |
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sary. A garden hose may be screwed on the drain nipple to drain water away from your unit.
•Clean pads. A clean pad is more absorbent, efficient and will give more cool air. Annually, or when required, using a garden hose with nozzle, back wash to clean out the openings, then clean off the inlet face any scale or other obstruction to the passages. Slight scraping may be required to remove hardened scale.
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