ADOBEAIR Evaporative Cooler Manual L0406099

User Manual: ADOBEAIR ADOBEAIR Evaporative Cooler Manual ADOBEAIR Evaporative Cooler Owner's Manual, ADOBEAIR Evaporative Cooler installation guides

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INSTALLATION

USE AND CARE

PARTS REPLACEMENT

Evaporative cooling works on the principle of heat absorption by moisture evaporation.

Your evaporative cooler draws outside air into specially made pads soaked with water, where the air is

cooled by evaporation, then circulated into your home.

Your MasterCool evaporative cooler has been designed to provide more efficient, consistent cooling

through use of a long-life MasterCool pad. It is a cellulose fiber treated with stiffening and wetting agents

to provide the most reliable evaporative pad ever devised.

Your cooler has two modules - wet and dry - which may be separated for service and cleaning, and

incorporates the most reliable components for long, trouble-free life.

MODELS"

MC43/44B .....

HC43/44A

MC63/64B

HC63/64A

REQUIRED: A special MasterCool motor kit is necessary for installation.

NOTE! READ AND SAVE THIS MANUAL -

"IMPORTANT SAFETY INSTRUCTIONS"

Model Number

Serial Number

The model and serial numbers for your unit

are located on the data plate attached to your cooler.

Record this information in the space allotted above.

This product covered by City of Los Angeles

Research Reports RR930224 (for all single

phase applications), or RR930190 (for 3 phase

applications) Electrical, and RR8141 Mechani-

cal. Copies of these reports are available from

the manufacturer upon request.

MasterCoot_I1. I

Installation and Start-Up ............................................................................................

Mounting and Securing ....................................................................... 3

Electrical Connections ........................................................................ 3

Grounding ........................................................................................... 3

Installing Motor ................................................................................... 3

installing Overflow Standpipe and Drain Line ...................................... 4

Connecting Water Supply ................................................................... 4

Faucet Use ......................................................................................... 4

Adjusting Water Level and Float Valve ............................................... 4

installing Bleed-Off ............................................................................. 4

installing Float Shield ......................................................................... 4

Maintenance Schedule

Annual Start-Up/Shut-Down ............................................................... 5

Required Exhaust Openings ............................................................... 5

Pre Start-Up Inspection ...................................................................... 5

Periodic Inspection ............................................................................. 5

Checklist ............................................................................................. 5

Cabinet Cleaning & Touch-Up ............................................................ 5

Scratches & Bare Metal ...................................................................... 5

Changing Pad ..................................................................................... 5

Adjusting Belt Tension ........................................................................ 6

Lubrication .......................................................................................... 6

Cleaning Water Pump ......................................................................... 6

Snugging Down Set Screws and Nuts ................................................ 6

Washing Pad ...................................................................................... 6

Parts Replacement

Motor .................................................................................................. 6

Pump .................................................................................................. 6

Float.................................................................................................... 6

Bleed-Off ........................................................................................... 6

Troubleshooting ........................................................................................................ 7

Getting the most from your cooler .......................................................................... 7

Maintenance ....................................................................................... 7

Add-On Coolers .................................................................................. 7

Insulation ............................................................................................ 7

Multi-Speed Motor .............................................................................. 7

Attic Vents .......................................................................................... 7

Thermostat Control .......................................................................... 3,7

2•MasterCooP II

Installation and Start-Up

Read carefully before installing your MasterCo'bl evaporative cooler.

To install the unit the following tools are

needed:

• 5/32" hex key allen wrench

• Channel locks

• Pliers

• Adjustable wrenches

• Tubing cutter

• Screwdrivers

•Hammer

• 1/4" Socket wrench

• 7/16" Socket wrench

Before attempting to install the cooler,

make sure the following preparations have

been made:

• Assure that the mounting surface rs

strong enough to bear the weight of the

cooler when in use; remember that

when the system fills with water, the

cooler will be much heavier than when

dry. The operating weight for MC units is

250 pounds, and for HC units is 295

pounds.

• Make sure you have adequate means

for lifting the cooler in place.

• Make sure the mounting surface is level

in all directions.

• Make sure any ductwork and electrical

needs comply with local, state, county,

and federal codes.

Caution: All electrical in-

stallations must comply

with local building and

safety codes, and must be

performed by quafified

personnel only.

Mounting

The blower module and the media module

can be separated before mounting by re-

moving four bolts and one shipping screw

-see drawing below.

B°lts_ w

Placement and Securing

The duct opening for the 63/64 units

should be about 20" x 20". The cooler

discharge opening for these models is

19-3/4 x 19-3/4". For the 43/44 units the

duct opening should be about 18" x

18". The cooler discharge opening for

these models is 17-3/4" x 17-3/4".

If the cooler is to be mounted on the roof,

construct a suitable roof stand to support

the entire weight of the cooler. (The roof

jack or ducting should NOT be used to

support any weight of the unit). For models

MC63 or MC64 our #785 leg kit, sold sepa-

rately as an accessory, willadequately sup-

port the unit and secure it to the roof For

High-Performance models HC43. HC44

HC63 and HC54 we recommend that a fuji

stand be constructed in such a manner as

to support the entire perimeter of the

cooler. A leg kit only may not provide

adequate support for these mods!s due to

their increased size and weight.

Place the cooler over the roof jack and

position so that it is level. Carefully seal

the space between the roof jack and bot-

tom of cooler with caulking compound,

silicone, asphalt or industrial sealing

tape to prevent air leakage. Then care-

fully seal the roof jack to roof with asphalt

or caulking compound to prevent air leak-

age from cooler or rain water from leaking

into roof. (See Figure ! ). There should be

24 inches clearance on all sides of the

cooler for maintenance.

For maximum cooling performance

and even water distribution, the cooler

must be level. The base of the cooler

at the drain fitting should have at least

4" clearance to allow drain installation.

Electrical Connections

For the convenience of thermostat con-

trol, we recommend installing a

MasterStat TM Universal Cooler Control

Kit, Model CCl000A. Complete installa-

tion instructions are furnished with the

CCl000A Kit. For electrical connections

to a rotary wall switch, use the following

instructions:

Locate the junction box installed in the dry

module. Junction box is to be installed

with the receptacle facing away from

the pad. Make cedain all electrical cords

are clear of the belt, water, pulleys and

blower wheel. Note that there are two

plug-ins, one for the motor and one for the

pump. The building power supply must be

connected to this junction box to provide

power to the motor and pump. The wiring

diagram in Figure 1 shows how the junc-

tion box receptacle should be connected

to the power supply. Make sure contro

switch and circuit breaker are in the OFF

position. Low voltage electrical supply

(below 105 V) may cause insufficient

water supply to pad.

Caution: Turn off all elec-

trical power to the cooler

before attempting to in-

stall, open, or service

your cooler.

Grounding

Install a ground wire to suitable ground

according to local codes.

Install Motor

NOTE: A special MasterCool motor kit

is necessary for installation due to the

custom designed receptacle in the

junction box.

1. Adjust motor cradle spacing.

2. Place motor in cradle (see Figure 2).

3. Place straps over each end, connect to

cradle and tighten.

4. Align sheave (motor pulley) with blower

pulley by moving sheave in and out on

motor shaft until visual alignment is

achieved. Tighten alignment set screw

to 125 in-lbs. Do not adjust to the point

where the motor sheave comes in con-

tact with the motor face plate (see Figure

2). Belt tension should be adjusted sothe

belt will deflect 1/2 to 3/4inch atthecenter

of the span per Figure 3. Re-adjust belt

tension after any pulley adjustment. Re-

place worn or damaged belts.

Rgu.,2

MOTOR STRAPS

SUPPORT BRACKETS

ADJUSTMENT

BRACKET

Figure 3

Figure I

WHITE _C_

*T_E SACK t_U_D W_I_:S _G

115 VOLT INSTALLATION

aLaCK" PUMP _,FU_ _

Il,---4---JlI' -°

[G _,I_EN GREEN

III I I h

, T_pE BACK UNt._=F_DWIPJE6

230 VOLT INSTALLATION

Mas_rC_P #.3

®Caution: Disconnect ell

electrical power to the

cooler and insure that belt

is not rotating before ad-

justing belt tension. Do

not adjust belt tension by

changing diameter of ad-

justable sheave. Adjust

belt tension only by ad-

justing motor brackeL

Rotate blower wheel by hand to see that it

moves freely without rubbing against

housing.

Check motor mounting to be sure all

screws and nuts are tightened down.

If cooler is connected to ductwork, air

delivery and motor amperage will be de-

creased due to increased duct resistance.

To compensate for this, the motor pulley is

adjusted out or in, using an ammeter to

check motor amperage. For maximum air

flow check motor amperage with all ser-

vice panels in place. To prevent overload-

ing of the motor, check amperage with all

windows and doors open and all relief

systems operating. Tighten pulley set

screw to 125 in-lbs.

Aqualified serviceman is required to ad-

just mOtor before start-up.

Caution: Do not exceed

maximum amperage out-

put as stamped on the mo-

tor specification plate or

motor can overload. Only

qualified persons with proper electrical

equipment and knowledge should ad-

just variable pitch sheaves. Do not allow

water to get on the motor, as it will burn

out the windings.

Note on multi-speed switches: A switch

with separate terminals for the pump is

recommended.

Install Overflow

Standpipe and Drain Line

Install overflow drain bushing in bottom

wet section on the right side. Screw plastic

overflow standpipe into the drain bushing

and tighten snugly. Slide rubber washer

over drain bushing, push through bottom

of cooler, and tighten nut. Connect a per-

manent drain (copper/pvc/garden hose) to

the drain bushing for draining the unit and

overflow protection. Drain should be in

accordance with local plumbing codes.

Rgure 4

WASHER

,_.====.==__=:=,_ COOLERBO'l'rOM

LOCKRUT

4 • MasterCooP II

Connect Water Supply

Connect water line to cooler as follows:

•Awater valve should be installed at a

convenient location, to allow the water

supplyto be tu reed onand off. 1/4" tubing

is used to provide water to the cooler. A

water connector kit, available from your

dealer provides the necessary items.

• Install float valve in the side panel of the

wet section opposite the pump.

• Place tube nut and ferrule over end of

tubing.

• Insert tube intofloat valve, and tighten to

secure.

NOTE: Soft water equipment should not be

attached to any water lines going to a

cooler. "Soft Water" will cause corrosion

and decrease effective life of cooler.

Figure 5

COMPRESSION NUT

_FLOAT ROD

FERRULE WASHERS _.

Fasten 1/4 inch water supply line to cooter

stand using tubing clamp and self-drilling

screw. Locate tubing clamp 18 inches or

less from water supply line entry into cabi-

net. (See Figure 5A)

_3ELF-ORILUNG

SCREW

1/4" WATER

SUPPLY UNE

Faucet Use

Connect water line to water supply, as fol-

lows (refer to Figure 6).

•Install a sillcock and water valve on

faucet, as shown. Place tubing nut and

ferrule on tube end and insert in valve.

Tighten nuts onvalve and tube.

Iffaucet is not to be used for water supply,

installvalve on water line to be used. Follow

instructions above for securing tubing to

valve.

Rgure 6 -, -,=_-^/_-_TUBING FROM

½ .RO,=

s,,,coCKT i

Adjusting Water Level

and Float Valve

Fill reservoir as follows:

•Turn water supply on. Check for good

pressure and flow from float valve.

• When float valve shuts off, check water

level. Water level should be from 1/2 to

1 inch below top edge of overflow

standpipe. It may be necessary to adjust

float valve by bending the rod (refer to

Figure 5).

• Check reservoir and all connections for

leaks.

Install Bleed-Off

A bleed-off system is provided with your

MasterCool cooler. We recommend the

bleed-off be installed and maintained

while operating this unit. its purpose is to

eliminate a small quantity of water from

racirculation thus reducing scale build-up.

Install bleed-off as

Figure 7 follows:

•Install 1/4" black

plastic tubing into

pumpasshown in

t/4" Figure 7.

TUBE •Insert smaller

/black plastic

tubing into 1/4"

tubing as shown

in Figure 7.

Adjust bleed-off by shortening small tube to

get the proper bleed rate shown below.

Disposal of bleed-off water should comply

with local codes. Use of chemical additives

or any water treatment other than bleed-off

is not recommended for this cooler. Failure

to use the bleed-off with MasterCool pad

greatly increases the mineral deposits and

reduces the expected life of the

MasterCool pad, and could result in early

replacement of pad at your expense.

SECONDSTOFILLA12 OZ.CAN

Model

MC43/44

MC43144

HC43/44

HC43144

MC63,64

MC63/64

HC63/64

HC63/64

Motor Hp Seconds to nil

1/2 100

3/4 80

1/2 80

3/4 65

3/4 70

1.0 60

3/4 60

1.0 50

Install Float Shield

•Install shield overfloat valve as shown in

Figure 8.

• Loop of cotter pin fits into hole in shield.

• Cotter pin loop and hole must face

MasterCool pad.

lE_'r'_ RPIN

Required Exhaust

Openings

Using standard CFM ratings, acommon ((_

method of determining how much to open

doors or windows for proper exchange is:

2 square feet per 1000 CFM.

Pre-Start-Up Inspection

Assure that:

•Cooler mounting is level; duct is sealed.

•Cabinet issecurely fastened to mounting.

•Cooler cabinet is grounded. Electrical

connections are safe and secure.

•Motor,pump,and floatinstalled,Motor

and pumppluggedintojunctionbox.

•Pump impellert urnsfreely. Remove pump

and basket. Remove impeller cover (see

Figure10 and spin the impeller to assure

free rotation).

•Water lineconnectedsecurelywithout

leaks.Water supplyturnedon.

•Floatadjusted for properwaterlevel,

•Blower, shaft; collar, and pulley set bolts

are snug (do not overtighten pulley bolt).

•Pulley alignment okay; belt tension okay

(see page 3 for instructions).

•Blowerbearingsare lubricated.Filloilcup

witha goodgrade SAE 20W or30W oil.

•Pad is pra-soakad. Check to see that

pump starts end pad is evenly wet.

•Open windows or vents in house.

•In case of trouble in any of these stages,

refer to the Troubleshooting Chart on

page 7.

Caution: Never operate unit

with service panels, pad

or inlet filter removed. This

will result in an overloaded

condition and may damage

the blower motor.

Periodic Inspection

In addition to the planned maintenance

schedule, regular inspection of your

MasterCool cooler will enhance the chance

for long trouble-free service life.

Checklist

[J Chsckfor leaks

CI Is cooler level?

OAre there dry spots on the pad when

cooler is in operation?

ODoes blower turn freely?

_1 Is there 25 Ibs. tension (models 63/64)

20 Ibs.tension (modeLs43144) on drive

belt?

OAre bolts, nuts, and sat screws snug?

_1 Is float set correctly?

_1 Is water pan clean?

Cabinet Cleaning and

Touch-up

The cabinet and all internal parts except

blower and drives are furnished with a hard

appliance-type Polybond ®coating. This

surface is highly resistant to scale and cor-

rosion. A soft cloth, warm water, and a mild

cleanser will bring all surfaces back to like

new appearance. Avoid steel wool orsand-

paper in normal cleaning of the cabinet.

Scratches and Bare Metal

Inthe unlikelyevent that scratches or bare

metal areas occur, sand orrubthe area with

steel wool to prepare the finish. Paint with

standard paint or touch-up paint available

through your dealer.

Changing Pad

This should be done after 5 years or if

passagesare clogged,

NOTE: Hosing off inlet face of pad can

unclogpassagesof dust.and mineralsac-

cumulatedthere. Lightscrapingsof the in-

take edges of the pad will not harm its

openingsand will remove morestubbom

scale.

Caution: Avoid splashing

water on blower motor.

•Remove wet section top.

•Remove water distributor assembly,

disconnecting hose.

•Lift out used pad sections.

•Replace with new MastarCool pad only,

available from your dealer. Aspen and

other evaporative pads WILL NOT

WORK.

Maintenance Schedule

Regular maintenance is a key to longsuccessful service of your MasterCool cooler. The service schedule willhelp you maintain an efficient

unit with good appearance.

MAINTENANCE REQUIREMENTS

(LOCATION IN MANUAL)

Changingpad (p.5)

Cleaning& touch-up(p, 5)

Cleaningwater pump(p. 6)

Lubrication (p. 6)

Adjustingbelttehsion(p.6)

Periodicinspection(p. 5)

Snuggingdownsetscrews& nuts(p.6)

A_ustingbleed-off(p,4)

Washingdownpadwithhoes(p.6)

Drainallwaterinestoendfromthe

coolerto preventfreezing

ANNUAL

START-UP

At beginningof 6th

year or if passages

are blocked.

X

X

X

Duringcodingseason

X

X

ANNUAL

SHUTDOWN

x

As needed

Duringcoolingssascn

X

X

NOTES:

DO NOT UNDERCOAT THE WATER

RESERVOIR.

Your MasterCool II cooler's water reser-

voirisfinLshedwithaPolybond®appliance

type finish. It is so hard, asphalt type

coolerundercoatwillnotstick to it. Under-

coat will break free and clog pump and

water distributor.

DO not use cooler cleaners,

cooler treatments, or other

additives in this evaporative

cooler. The use of any of

these products will void your

warranty and may impair the

life of your evaporative cooler.

MesterCooPfl• 5

Adjust Belt Tension

Each time you inspect your cooler, be sure to

check belt tension on motor/blower assem-

bly. Check belt condition and replace it if

frays or defects appear. Check alignment of

blower pulley with motor pulley.

Lubrication

Blower shaft bearings need periodic lubri-

cation. The oil cups on the blower shaft

bearings should be filled with a good grade

SAlE20W or 30W oil when necessary. Under

normal use, oiling is required every three

months of operation. DO NOT OVER OIL.

The pump and blower motor do not require

lubrication.

Four Figure 9

out tabs

) ,'>

Cleaning Water Pump

Disassemble and clean water pump as

follows:

•Disconnect pump from electrical box.

•Remove pump

• To prevent breakage, carefully release

the four snap-out tabs, and lift impeller

base plate from the pump body.

• Using a mild detergent solution, wash

all deposits from inside around impeller

and impeller base plate.

• Spin impeller to dislodge any foreign

material.

• Rinse and reinstall impeller base.

• Reinstall pump.

• Make sure to use a pump screen or

basket. Check to see if old one needs

replacing due to clogging

Caution: Do not allow pump

to topple over and become

submerged; water will

damage pump motor.

f

Impeller

_" base plate

Rgure 10

Snugging Down Set

Screws and Nuts

Location of set screws and hardware that

should be snugged down.

•Pulley set screw (150 in-lbs)

•Blower set screws (150 in-lbs)

•Wet and dry module connection bolts

Washing Pad

Annually, mineral accumulation and dust

should be washed off the intake surface of

the pad. Use garden hose and nozzle. A

paint scrapper may be used to remove hard-

ened scale from edges of intake passages in

pad.

Parts Replacement

Motor

Removing old motor

•Disconnectpowertocooler

•UnplugfiornjunclJonbox-4pinplug

•Loosenalignmentsetscrewon

motorpdley(onmotorsideof pulley)

andmm_'e baitandmotorpulley.

•Removemotorstrops.

•Pullmotorftom brackets.

Replacing motor

•Reverseprocedureto install

new motor.

Pump

Removing old pump

• Disconnectpoworto cooler,

• UnplugfromjuecflonPOx(3pinplug),

•UnserawpumpbreckeL

• Liftoot pump.

Replacing pump

•Removeimpellerbase plateat

bottomof pumpby releasingfour

tabs.

•Spin impellertu assurefree

rotation.

•Reinstallimpellerbase p_ata.

•Cleanoldpumpbasketorreplace,

•Placepumpin basket,

•Attachbracketto cabinet.

•Connectpumpplugto junction

box(3 pinreceptacle).

•Connectpump hoseto hose

fitting.

Bleed-off

Removal of old bleed-off

•Replace bleedline if necessary.

Installation of bleed-off

assembly

•TOinstallbleedlineto pump see

Figure7.

•BleedlineshooldfUe 12ounce

beveragecanasindicatedinchart

on page4.

•Adjustbleed rateby shortening

smellbleedtube.

Float

Removing old float

•Removefloatshield

•Removenutand ferrulefrom

waterline.

•Removelockwasherendnutfrom

valve.

•Liftfloat outof cabinet.

Replacing or installing float

valves:

•Securenutandlockwasher

holdingfoet to cabinet.

•piecetubenutandferruleoverand

of tubing.

•Inserttube intofloat valveend

tightento secure.

•Turnon faucet allowingwaterto

enterthroughvalve.

•Fillfrom lf2 to 1 inchbelowtop

edge of overflowstandpipe.

• Adjust float ballbybending_e

floatarmwith a pairof pliersto

achievecorrectangle,

•Reinstallfloatshield.

Troubleshooting

Symptom Possible Causes

•Unit fells to start or deliver No electrical power to unit

air • Fuse blown

• Cimuit breaker Iripped

•Cord(s) damaged or

unplugged

•Belt too laose or too tight

• Motor overheated and frozen

•_ft tco tight o_ b_'oksn

•Blower wheel beadngs dP/

• MotOr overloaded

•Faulty wtdng or shorts

Remedy

Check power

• Replace fuse"

•Reset breaker"

*If condition persists, call

electrician

•Plug in cord or replace if

damaged

•Adjust belt tension

•Replace motor

•Adjust holt tension or replace

• Lu4_rk_teblower hoadngs

•Using ammeter, adjust

motor to full load a.rnps(see

motor nameplete).

•Call elestd_an

•Unit starts but air delivery

tnad_uate

• Inadequate ooolln 0

of sufflolactair exhaust

Motor undeitoadad

Beit too laose

MasterCool pad pluggad

Inadaqga_e exhaust in house.

/_r registers improper_

positioned.

lasuffidenl wster flow te pad, pad

nct wst.

•Pump not working

• Loo_ cennection lo v,c*t_r

system

•Insufficientblaed-off wster

• Pump I_sket dogged

Openwindowsordoorsto

k'=ueaseventilstion

Usingammeter,adjustmotorto

fullamps(seemotornameplate)

Adjusthoiftensionor replaceif

needed

Rinseorrep_ce pad

Open windows or door to

Increase ventilation.

Adjust to direct air as dastted.

Check water distribution system

•Rime or replace pad

•Clear holes

• Unplug pump. Clean impeller

housing of all foreign matter

•Choc_ for leaks and correct

•Reset or replace bleed-off kit

• Clean basket

• Motor cycles on end off Excessk,e belt tension

•Blower shag tight or frozen

Motor ovedoeded

Incorrect sheave adjustment

Pulleys mlsalignad

SeMce panels, pad or In_ flier

removed

Adjust holt tension

•Lubricate blower beadngs and

rotate shaft by hand (power off)

Correct_:lo not exceed name

plate amps.

Serviceman should adjust

Check alignment

Never operate unit with service

panels, pad or inletfiller removed.

This will result in an overloaded

condl_onand may damage motor.

overgow standplpo a_usted

* Seal in go_ val_ iaaldag • R_a_

.sta_'_l:,_r_xt_ht •"rbgrifenslan_A_'q,e

• Knocking or banging Beadaged_y Luhocstel_m_er hoadags

sound * W_ _U_ _o_x •Inspact blawer st_t, cola,'s,

_x_ =ro_ o_hoarse benandpu_ _rrne_ _

rnstormo_n_

• LOOSepar_ • Re-seoJre or _

i B_wer =helm or _1_ Beif o( pullay loose In_ bal and ed_ I_eaded.

• Excessl_ humM_ in _a_e exhaust Open _or _to

house _.

mMusty or unpleasant odor Stele or slal_ wa_erInreservoir Drakl, flush mKIclean rese_No_

, Ped mildawad or dnggad • Chock bk_d-off setUng

. Ped not completely wet before Dly pad and b<_lompen

coster Is lumad on • Turn on wster ho_ore stealingunl

•New bad •NOTE:Thoi'e willho aslg/odor

no6cad c_ i'&laJ sted-ep. Tho odor

wil dsadpear v//Z¢nthoItst tew

da_ ohopa_lan I I_ed-o_ ls usad.

Getting the most

from your cooler

Your evaporative cooler is a finely crafted, eco-

nomically operating unit built on decades of

know-how and reseamh. It serves as the heart of

an overall air coolingand moving system foryour

home. But there are a number of ways you can

maximize the comfort, efficiency, economy and

convenience of your total cooling system.

Maintenance

Regular maintenance as recommended in this

manual, is essential for cooling comfort, extend-

ing the life of your cooler, and avoiding unneces-

sary parts replacements. Start-up and shutdown

servicing should never be overlooked.

Add-On Coolers

Coolers come in a wide array of sizes, horse-

power, and capacities, suitable for patio, garage,

guestroom, and so forth, More than one cooler in

a single home improves the cooling effective-

ness of the system. Owners of refrigerated air

conditioning have found that the addition of an

evaporative cooler vastly reduces their electric

bills.

Insulation

Once your cooler forces cooled air into your

home and pushes the hotair out, good insulation

around your ductwork will keep the air as cool as

possible. Whole-house insulation will prevent

heat from seeping in and will also improve cool-

ing comfort.

Multi-Speed Motor

The cooling rate can be controlled by increasing

and reducingthe amount of cooled air blown into

your home. Two-speed motors allow you to use

higher speeds duringthe hottest part of the day,

lower speeds for milder temperatures.

Attic Vents

By exhausting cool air through the attic, you can

reduce the temperature of this hotspot and make

your home more comfortable.

Thermostat Control

The addition of automatic control makes your

system convenient and efficient. We recommend

the MasterStat TM, Model CC1000A, Universal

Evaporative Cooler Thermostat and Control Kit.

MasterCool eII* 7

AO_beAlr, Inc. •500 S. 15th Street •Phoenix, AZ 85034

L411OO4A• 1ig6