11055
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 efficiently, 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 flow 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.
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 qualified electrician, so
that all electrical wiring will conform to your local standards.
4. For a maximum safety precaution, 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 specification plate.
6. Do no allow pump to tip over and become submerged.
7. Always
DISCONNECT POWER
before installing unit or
performing any maintenance.
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 supply power to cooler until installation
is complete and unit has been tested for rigidity.
CAUTION:
Make sure all bolts are securely tightened before
starting the cooler.
• Louvered Side Panels.
The louver
panels have a locking latch on each top
corner to secure it in place. To remove
the louvered panel you will need to
loosen the latch screws on either side of
the panel. Loosen the screws enough
to rotate the latch handle, but do not
remove completely. Rotate the latch
handle towards the center of the lou-
vered panel (see fig. 1). Tilt the top of the louver panel outward
away from the top pan and lift out from cooler.
To reinstall the panel, first insert the bottom of the panel into the
bottom pan. Tilt the panel forward so that it rests against the top
pan. You will need to keep the latch handles rotated to the side to
keep the lock from hitting the top pan. Once the louver panel is
in place, rotate the latch handle so that the handle is facing down.
Tighten the screws to lock latch and secure panel in place.
Water Connection
•
Overflow 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 overflow pipe in nipple
to retain water. Overflow 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.
• Ductwork.
See the General Specification table for the duct open
-
ing dimension for your specific cooler. For down discharge units
models 10/12DD and 14/21DD, the duct must go inside the opening.
Size these ducts slightly smaller than the duct opening in the cooler.
On 75/85DD and 95DD models the duct may go to the inside or
outside of the duct flange. The side discharge units have a 1 inch
flange. Size these ducts larger than the duct opening to fit over the
flange of these units.
Note: Curbs are not provided. The installer is responsible for
providing curbs or other means to support the cooler.
Motor Installation
•
Mount motor.
Slide the heads of the provided carriage bolts into
the slots of the adjustable 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 motor mount using these carriage bolts and the washers and nuts
provided (see Fig. 2). Make sure all bolts are securely tightened.
•
Install pulley.
Install the adjustable motor pulley so that it aligns
with the blower drive pulley (see Fig. 3) and tighten set screw. See
page 3 for instructions on adjusting pulley.
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.
•
Electrical Supply.
Cooler must be supplied with the proper line
current, voltage and frequency, as stamped on cooler motor and
pump motor specification 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
competent electrician.
WARNING:
Make sure that cooler cabinet is properly
grounded to a suitable ground connection for maximum safety.
Fig. 2
Adjustable
Channels
Blower
Housing
Motor
Pulley
Blower
Pulley
Fig. 3
Rubber Washer
Overflow Pipe
Nipple
Bottom Pan
Nut
Fig. 4
Fig. 1
