Duct Placement
Figures2-6showcommonmethodsofduct
placementforeffectivecooleroperation.
Required Exhaust Openings
Usingstandard CFMratings, a common methodfor
determining how much to open doom or windows
for proper exchangeis: 2 square feet
per 1,000 CFM.
FIGURE2_
7?ansitionDuct_l_==_
, fin N N
Blower
Rt_er
- RoofSland I I ____[q_oof Stand_
Separately
, Ouct FIGURE6
Boxed
Opening
Electrical Installation
(DuctedModels)
C_ Disconnect all electrical
power to the cooler before
attempting to install, open, or
service your cooler. If the
cooler is thermostatically
trolled, the thermostat is
ot to be used as a disconnect
it may reset and start the unit
ctedly.
lio°
Locatediejunctionboxinstalledincabinetcorner.
Notethattherearetwoplug-ins,onefordiemotor
andonefordiepump(seeFigure7). Thesemaybe
indiejunctionboxorpartsbag.Thepowersupply
fromyourhousemustbeconnectedtothisjunction
boxtoprovidepumpandmotorpower.Thewiring
diagraminFigure8showstheseconnections.
Grounding
Installagroundwiretosuitableelectricalground.
Attic
Ceiling
I "- -.._ with g¢'giste_
Closed in/area sends as duct
FIGA_ . j
Oiling Angle Irotl
Supl_lrt
Alignment Pullel,
Set ,9_'rew Pitch Set
Scre_t
Motor Mounting Motor
Bracket B!ou_r Straps
PullO'
I I _" / _" rt I SuplJort
F_ [ _ Adjustment
\ Bracket
FIG_ U 1! I
FIGURE11
MotorInstallation(DuctedModels)
Installation
1.Adjustsupportbrackets,ffnecessary,towidthof
motor.
2. Placemotorin brackets,withclosedportionof
motorcaseontop.
3. Placemotorstrapovereachresilientringmotor,
at thetabs.
4. Securetobracketwithmachinescrewsandnuts.
5. Insertsheaveontodiemotorshaft.
6. Installbeltfrommotorsheavetodieblower
pulley.Alignthesheaveandpulleyas short;.
Movemotorsheavetoachievealignment;donot
moveblowerpulley(seeFigure9).
7. Tightenbelttothepropertension.When
correctlytightened,diebeltwilldeflectabout1/2
inchbyhand(seeFigure10).
8. Rotateblowerwheelbyhandtoseethatitmoves
freelywithoutrubbingagainsthousing.
Checkmotormountingto besureallscrewsand
nutsaretighteneddown.
checkmotoramperage.Topreventoverloadingof
motor,checkamperagewithallwindowsanddoors
openandallair reliefsystemsoperating.Notesheave
pitchsetscrew(seeFigure10).
Removal
Unplugmotorcordfromjunctionbox,loosenset
screwinmotorpulleytoremovebeltandpulley.
Loosenandremovenutsandscrewson support
brackets.Removemotorstrapsfrommotor.Pull
motorfrombrackets(seeFigure11).
Do not exceed maximum amperage
output as stamped on the motor
specification plate or motor can
overload. Only qualiJ'led persons A _ _
with proper electrical
equtpraent and knowledge
should adjust variable pitch _
sheaves. Do not allow water to _ I _
get on the motor, as it will burn _V_
out the windings. _
Disconnect all electrical
power to the cooler and insure that belt
is not rotating before adjusting belt tension by
changing diameter of adjustable sheave. Adjust
belt tension only by adjusting motor bracket.
ffcoolerisconnectedtoductwork,airdeliveryand
motoramperagewillbedecreasedduetoincreased
ductresistance.Tocompensatefor this,themotor
pulleyisadjustedoutor in,usinganammeterto
II5V l-Speed Electrical Wiring
(Tape back unused orange and red wires)
ll5V2-SpeedWectrical_Sring
(Tapebackunus_l_sg¢ w_re)
btot_r
230VI-sl_e_ ElectricalWiring
(Tapebackunusedwhitewire)
Evaporative Cooler Use and Care Ma_val 3
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