Filter
Top Products
1105262
Safety Rules
1. Read instructions carefully.
2. Disconnect all electrical service that will be used for the unit
before you begin the installation.
3. Electrical hook up should be done by a qualifi ed electrician, so
that all electrical wiring will conform to your local standards.
4. For maximum safety, make sure cooler cabinet is properly
grounded to a suitable ground connection.
5. Cooler must be connected to proper line current, voltage and
cycle, as stamped on cooler motor and pump motor specifi cation
plate.
6. Do not allow pump to tip over and become submerged.
7. Always TURN OFF POWER before performing any mainte-
nance.
Operation
For the best cooling performance, if the pads are dry, pre-wet the pads
by running the pump for a few minutes before starting the blower.
These coolers may also be used without water for ventilation purposes.
When outside air is cool (for example, at night) or when humidity is
high the water pump can be turned off.
Important: To cool effi ciently, you must exhaust the stale or used air
from the building. Open windows or doors or use exhaust fans located
away from the cooler and in the direction you wish to cool the air. The
air will fl ow in the direction of the exhaust openings. A common guide
for the amount of exhaust opening needed is to have at least 2 square
feet of opening per 1000 CFM.
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 the general specifi cation table.)
CAUTION: Do not start cooler until installation is complete
and unit has been tested for rigidity.
CAUTION: Make sure all bolts are securely tightened before
starting the cooler.
• Wet sections. The wet sections are bolted to the blower section using
the connector brackets, lift brackets and bolts provided. Match the
colored dots on the wet section to the appropriate dot on the blower
section to insure correct installation.
• Ductwork. See the General Specifi cation table for dimensions of
duct opening. For down discharge units, the duct must go inside
the opening. Size these ducts slightly smaller than the duct opening
in the cooler. The side and up discharge units have a 1 inch fl ange.
Size these ducts larger than the duct opening to fi t over the fl ange of
these units.
Note: Curbs are not provided. The installer is responsible for
providing curbs or other means to support the cooler.
Motor Installation
• Motor mounting. Slide the
heads of the provided carriage
bolts into the slots of the ad-
justable channels. Slide these
channels sideways in the slotted
holes to align with the holes in
the motor base and to align the
motor shaft with the blower
pulley. Mount the motor to the
Water Connections
• Overfl ow assembly. Remove nut and place nipple through the hole
in the pan, with the rubber washer between the pan and the head of
the drain nipple (Fig. 4). Screw on nut
and draw up tight against bottom of pan.
Insert overfl ow pipe in nipple to retain
water. Overfl ow pipe may be removed
to drain pan when necessary. A garden
hose may be screwed on the drain nipple
to drain water away from your unit.
• Pump. The pump must be secured to prevent it form tipping over.
Secure the pump to the pump mounting bracket (item 16 in parts
drawing). Remove a nut located under the head of the pump, place the
pump bolt though the hole in the mounting bracket, and secure with
the nut that was previously removed. Plug pump into receptacles.
Retain pump cords to internal braces to prevent cords from dropping
into water reservoirs or contacting moving components.
• Supply water. Run a water supply line to the unit. Each wet section
requires a 3/8 inch tube connection to the fl oat valve. The double
inlet units will have two fl oat valves, one for each wet section. Note:
Do not use water supplied from a water softener.
• Float valve. Refer to Fig. 5 to install fl oat. Remove items 1, 2,
3, and 4. Insert fl oat body (5) through hole in splash plate (9) and
back post panel as shown. Install washer (1) and nut (2). Tighten to
motor mount using these carriage bolts
and the washers and nuts provided
(see Fig. 1). Make sure all bolts are
securely tightened.
• Motor pulley. Install the motor pulley
so that it aligns with the blower pulley
(see Fig. 2) and tighten set screw. See
page 3 for instructions on adjusting pulley.
Electrical Connection
NOTE: Local building code regulations must be observed.
WARNING: Disconnect all electrical services that are used for
this unit before beginning any service to the cooler.
• Electrical supply. Cooler must be supplied with the proper line
current, voltage and frequency, as stamped on blower motor and
pump motor specifi cation plate. See the wiring diagrams on page
4 for typical electrical connections. Note: Connecting improper
voltage to motor will void motor warranty.
• Wire sizing. The conductor sizes are to be determined by motor
loads and length of run per national and local electrical codes.
• Switches or contactors. Motors require switches or contactors of
proper current capacity and should be sized and installed by a quali-
fi ed electrician.
• Wiring. The electrical junction box
is located in the upper inside of the
divider channel. Remove the two
screws and pull the box out from the
channel to access wiring (Fig. 3).
Connect the pump supply wiring to
the pump receptacles (See the pump
wiring diagrams on the next page).
Connect the motor supply wiring
directly to the blower motor.
WARNING: Make sure that cooler cabinet is properly grounded
to a suitable ground connection for maximum safety.
Fig. 1
Blower
Housing
Motor
Pulley
Blower
Pulley
Fig. 2
Screws
Junction Box
Fig. 3
Rubber Washer
Overfl ow Pipe
Nipple
Bottom Pan
Nut
Fig. 4