Belt Tension Adjustment
CAUTION:
Disconnect all electrical power to the cooler and
insure that belt is not rotating before adjusting belt tension. Do
not adjust belt tension by changing diameter of motor pulley.
Adjust belt tension only by adjusting motor bracket.
Correct belt tension and alignment is important,
proper setup reduces power consumption and
prolongs life of belt and motor. Check belt tension
by squeezing belt. Proper tension will allow
deflection of ½ to ¾ inch. To increase or decrease
belt tension, loosen bolt in slot of motor support
bracket. Adjust belt to proper tension and
retighten bolt.
Do not tighten belt by adjusting motor pulley.
Connect Water Supply
CAUTION:
All plumbing installations must comply with local
building and safety codes, and must be performed by qualified
personnel only.
NOTE: Coolers should not be connected to “soft” water systems. Soft
water will accelerate corrosion and decrease the effective life of pads and
cooler cabinet. Connect water line as follows:
A water supply valve should be installed at a convenient location, to
allow the water supply to be turned on and off for servicing or
winterizing. Minimum 1/4“ diameter tubing should be used to provide
water to the cooler, larger tubing is recommended if the distance from
the valve to the cooler is greater than 100 feet, then reduced to 1/4” at
the unit.
Install float valve through the hole in the side panel opposite the pump .
Connect tubing from water supply to float valve. Place compression nut
and ferrule over end of tubing, insert tube into float valve then tighten
compression nut to secure.
Install Overflow Standpipe / Drain Line
Install overflow drain bushing in bottom of cooler as follows:
Slide rubber washer over drain bushing.
Push drain bushing through bottom of cooler, assemble and tighten
lock nut.
Screw plastic overflow standpipe into the drain bushing and tighten
snugly (hand tight) to prevent leakage.
Connect a suitable drain line (copper / PVC / garden hose) to drain
bushing. Avoid draining water onto a roof; mineral build-up or damage
to roof may occur.
NOTE: Drain water in accordance with local plumbing codes.
Install Pro Cleaning System (PCS)
To minimize mineral scale “build-up”, your cooler has a PCS assembly
pre-installed. The PCS will drain the cooler water every 5 hours of
operation, allowing the cooler to refill with fresh water. To complete the
installation, find the pump plugged into the receptacle marked ‘DRAIN
PUMP’ and insert the end of its water hose to the overflow standpipe,
using the drain adapter fitting. Avoid kinking the water hose.
4 Pro-series Ducted Evaporative Cooler Use and Care Manual
Adjust Motor Pulley
When the cooler is connected to extended ductwork, the cooler capacity
and motor amperage may decrease due to the increased duct resistance.
The adjustable motor pulley is to be used ONLY to return the cooler motor
to it's maximum allowable amperage and should not be readjusted except
for this purpose.
CAUTION:
Do not exceed the maximum motor amperage (FLA)
stamped on the motor specification plate or motor can be
overloaded, damaging motor.
Check amperage with all doors, windows and exhaust vents
open and/or all relief systems operating.
Improper pulley adjustment will overload and severely damage
motor windings (this damage will NOT be covered under
warranty). Only qualified persons with proper electrical
equipment and knowledge should adjust variable pitch motor
pulleys.
CAUTION
:
Never operate unit with access panels removed. This
will result in an overloaded condition and may damage the
blower motor.
GENERAL INSPECTION
Initial Start-up or Annual Inspection
CAUTION:
Disconnect all electrical power to the cooler before
attempting to install, open, or service your cooler. If the cooler is
thermostatically controlled, the thermostat is not to be used as
the power supply disconnect, as it may reset and start the unit
unexpectedly.
Before start-up of the cooler for the first time, or at the beginning of each
cooling season, make sure that all required connections, adjustments,
etc. have been made. Verify that:
P
Cooler mounting is level; ductwork is sealed.
P
Cabinet is securely fastened to mounting.
P
Cooler cabinet is properly grounded. Electrical connections are
correctly made, safe and secure.
P
Motor, pump, drain, float valve, etc. are correctly installed and fully
functional.
P
Water line securely connected, turned on, no leaks noted.
P
Float adjusted for proper water level.
P
Pump impeller turns free and smooth. If in doubt, remove impeller
cover (see “Cleaning Pump”) and check rotation.
P
Blower wheel, shaft, pulley and motor sheave bolts /
setscrews are tight.
P
Motor sheave / Blower pulley alignment okay; belt correctly
tensioned, blower wheel turns freely.
Start-up Check List
CAUTION:
Never operate cooler with access panels removed.
This will result in an overloaded condition and may damage the
blower motor.
To verify and check out the cooler installation on initial or annual start-up,
the following procedure should be followed.
P
Turn electrical supply to pump on.
P
Verify that pump starts and pads are evenly wet.
P
Open building exhaust / relief vents (windows, doors, etc.)
P
Turn electrical supply to blower motor on.
P
Observe that motor starts and runs, check each speed (where
applicable) and confirm air delivery.
P
Verify motor amperage does not exceed nameplate.
P
No leaks from water lines, cabinet, etc.
P
Cooler pads: even wetting, no dry streaks.
P
Confirm water level depth setting is correct.
P
Blower wheel / motor rotates freely, no unusual noises.
P
Belt condition / tension / alignment OK.
In case of trouble on any of these steps, refer to the Troubleshooting Chart
on
page 6.
