WayCool 1HP MFA Series User manual

Portable Evaporative Cooler
WayCool® 1HP MFA Series
USER'S MANUAL
WC-1HPMFA WC-1HPMFA360
WC-1HPMFAOSC
WCG-1HPMFA

INTR DUCTI N ............................................................................................................................3
Why use evaporative coolers in your workplace ............................................................................3
How evaporative cooling works ......................................................................................................3
AB UT THIS MANUAL ................................................................................................................4
SAFETY INF RMATI N................................................................................................................4
SAFETY REC MMENDATI NS ..................................................................................................5
SPECIFICATI NS ..........................................................................................................................5
DESCRIPTI N ..............................................................................................................................6
WATER SUPPLY SYSTEM ............................................................................................................7
C LING PAD ASSEMBLY ..........................................................................................................9
BL WER AND DUCTW RK ......................................................................................................10
C NTR L ....................................................................................................................................11
PERATI N AND MAINTENANCE ............................................................................................11
Unit placement and other considerations ....................................................................................11
Unpacking and initial setup ..........................................................................................................12
Regular cleaning ..........................................................................................................................13
Normal startup ..............................................................................................................................13
Normal shutdown..........................................................................................................................13
TR UBLESH TING ................................................................................................................14
Cooling pads not wetting ..............................................................................................................14
Foaming ........................................................................................................................................14
ine clogs or obstructions ............................................................................................................14
Odor control ..................................................................................................................................14
Scale buildup ................................................................................................................................14
Splattering in front ........................................................................................................................14
eaking from the bottom ..............................................................................................................14
PTI NS AND ACCESS RIES..................................................................................................15
Pneumatic wheels ........................................................................................................................15
Water conditioner and cleaner......................................................................................................15
Air filters........................................................................................................................................15
Aluminum grates ..........................................................................................................................15
Oscillating spout ..........................................................................................................................16
WARRANTY ................................................................................................................................17
Table of Contents
2
Using this equipment for any other purpose than it was inten e or in a way not within the operating
recommen ations specifie in this manual will voi the warranty an may cause personal injury.
This manual is designed to provide comprehensive planning, installation, safety, operation, maintenance,
troubleshooting and parts information. If a problem should arise, or if replacement parts are needed, your
Schaefer dealer can supply the necessary information to help you. Call Schaefer Ventilation Equipment at
800-779-3267 to locate a dealer.

Introduction
WHY USE EVAP RATIVE C LERS IN Y UR W RKPLACE
• The WayCool® evaporative cooler requires little space, has a low initial cost, is inexpensive and simple to
operate and requires minimal scheduled maintenance.
• Due to the design and construction of the cooling pads, cooling efficiency is normally maintained near
optimum throughout the life of the pads (approximately two seasons).
• In many cases, evaporative coolers are a better solution than mechanical refrigeration systems because they
are more economical to operate and maintain, and do not use environmentally sensitive and costly
refrigerants.
H W EVAP RATIVE C LING W RKS
Evaporative Cooling Principle
Evaporative cooling is the same process your body uses to cool itself. When you perspire, and air moves across
your skin, a portion of the perspiration (water) evaporates. Evaporation requires heat to change liquid water to
water vapor and this heat is taken from your skin, producing the cooling effect.
In an evaporative cooler, the cellulose cooling pads take the place of your skin, water instead of perspiration
wets them and a fan moves the air. The air blows across the cooling pads and evaporates moisture. Heat is
drawn from the pads and the air, dropping the air temperature and producing the cooling effect. The cooled air
is then forced through a building or space and displaces the warm air out of building openings, cooling the
surroundings. In addition, air velocity increases the cooling effect as it moves over the skin of people in the
airflow path.
WayCool® evaporative coolers are portable and use the latest technology to provide large volumes of cool air,
efficiently and inexpensively, for cooling small to medium size areas. Simply add more units to accommodate
larger areas. With proper sizing and application, a WayCool® evaporative cooler can lower the effective air
temperature by up to 20 degrees F. Even in high humidity, the efficiency of the WayCool® evaporative cooler
provides effective cooling.
Cool moist air
less than
80 deg. F.
Warm dry air
greater than
90 deg. F.
Pipe dripping
water onto pads
Wetted cellulose
pads
Fan
3

About This Manual
The intent of this manual is to help you in two ways: to provide you with step-by-step instructions for quick and
easy assembly of your product, and to serve as a reference for simple maintenance and questions you may
have regarding your product.
Read ALL instructions carefully before starting your WayCool®. Pay particular attention to all SAFETY
information.
Optional equipment contains necessary instructions for assembly and/or operation.
The WayCool® evaporative cooler is labele with a serial number. The serial number is locate
insi e the unit on the aluminum frame, behin the switch. Removal of the serial number label will
voi all warranties.
All information, illu tration and pecification in thi manual are ba ed on the late t product information
available at the time of printing. Product pecification ubject to change. We re erve the right to make change
at any time without notice.
Safety Infor ation
4
Using the equipment for purposes other than specified in this manual may cause personal injury and/or damage
to the equipment.
Safety Alert Symbol
This is a safety alert symbol. When you see this symbol on your equipment, be alert to the potential
for personal injury. This equipment is designed to be installed and operated as safely as possible;
however, hazards do exist.
Signal Words are used in conjunction with the safety alert symbol to identify the severity of the warning.
CAUTI N indicates an imminently hazardous situation, which, if not avoided, COU D cause damage to your
equipment or equipment failure.
WARNING indicates a potentially hazardous situation, which, if not avoided, COU D result in death or serious
injury.
Warning and Danger Decals have been placed on the equipment to warn of potentially dangerous situations.
Care should be taken to keep this information intact and easy to read at all times. Replace missing or damaged
safety decals immediately. The diagram below shows the proper location of the safety decals as shipped from
the factory.
WARNING!
Interference with the oscillating spout while the unit is operating,
or manually directing the oscillating spout, will cause damage to
the gear motor. Keep oscillating path clear of obstructions.
This warning decal is
found on the top of
oscillating units only.
Start Unit -Turn water pump on 5-10
minutes before running blower to wet
evaporative cooling pads.
Shut Down -Turn pump off and run only
blower until evaporative cooling pads are dry.
This prolongs the life of the pads.
WARRANTY- VOID IF YOU RUN THE
PUMP WITHOUT WATER.
CAUTION - ALWAYS TURN OFF AT
SWITCH AND DISCONNECT POWER
BEFORE REMOVING EVAPORATIVE
COOLING PADS FOR CLEANING OR
INTERNAL MAINTENANCE.
CLEANING - Clean pads a minimum of once
every two weeks. Remove pads from unit
and clean with garden hose only. DO NOT
use chemicals or high pressure hose.

5
Safety Reco endations
PLEASE N TE
Minimum inlet pressure is 10 PSI; maximum inlet pressure is 100 PSI.
Never leave unit unatten e while in operation.
READ AND SAVE THESE INSTRUCTI NS!
This is an electric device with moving components. There is the possibility of fire, electric shock or
injury to persons. Ensure all the safety recommendations are adhered to in order to minimize this risk.
• Disconnect all power and unplug the unit before you inspect, clean or perform maintenance on the
components of the unit.
• Never reach into the unit when it is running; you could become entrapped by the V-belt or injured by the
rotating fan blades.
• The metal frame edges are sharp; don't run your hand along them. Be careful and wear gloves when you
reach under the frame to inspect the PVC pipes and mesh socks.
• A GFCI (Ground Fault Circuit Interrupter) is recommended for use with this product.
• If pads and grates are removed for servicing, they must be replaced prior to operating the unit.
Specifications
•Height and Width 33" x 33" wide x 54" high
(with casters and directional spout)
•Shipping Weight 225 pounds
•Blower double-inlet centrifugal
•Motor 1 HP, 115V, 2 speed, 60 Hz
(also available in 230V and 50 Hz)
•Pump Filter washable polyethylene filter
•Pump Discharge Filter 480 micron stainless steel
•Reservoir Capacity 24 gallons
•Pump submersible vane type, 280 gallons per hour
•Housing high impact ABS plastic with UV protection
•Evaporation Media chemically treated cellulose paper
•ptional Water Supply standard 3/4" hose connection (garden hose size)
Component Overview
Actual WayCool® may
vary slightly from unit
shown here.

Description
The WayCool® evaporative cooler is a completely self-contained, portable unit capable of delivering 40 MPH
velocity of air with a temperature drop of up to 20 degrees F. The unit is composed of:
• evel-controlled water supply system
• Cooling pad assembly
• Motor-driven blower and ductwork
• Controls
• Frame and housing
The reservoir is made of high impact ABS plastic and holds approximately 24 gallons at normal operating level
(about 5" deep).
A float-operated valve automatically maintains proper water level when the unit is connected to a water supply.
The reservoir rests on, and is fixed to, an aluminum cradle. The reservoir, in turn, is secured to the aluminum
frame. Four casters (two locking, two regular) are attached to the underside of the aluminum cradle.
A pump draws water from the reservoir and discharges it through the vinyl hose to the PVC pipes located above
the cooling pads. The PVC pipes distribute water onto the top of the cooling pads; saturating them. Excess
water drips back into the reservoir through the holes in the cooling pad support channels.
The cellulose cooling pads sit in support channels and are held in place by plastic retaining grates. The grates
also help prevent damage to the cooling pads. Two pad sections fit in each side of the unit (total eight sections)
to totally enclose the unit.
The blower is hung from the top of the frame and powered by a belt-driven 1HP electric motor. The blower
draws room air through the cooling pads where it picks up moisture and cools by evaporation. The blower then
discharges the cooled air through the spout.
It is important the cooled space has sufficient air openings so the warmer air can flow out and be
replaced by the cooled air. A closed-in space or high humidity will reduce the cooling effect. See Unit
Placement and ther Considerations in the " peration and Maintenance" section of this manual.
A screen covers the discharge duct to prevent foreign objects from entering the blower. A threaded rod screws
through a threaded brace above the screen to hold the spout in position. A plastic knob secures the spout to the
rod. The spout is made of a tough, durable plastic and can be manually rotated 360 degrees to provide cool air
in any direction without moving the unit.
Water weighs about eight pounds per gallon, so when the unit is full it weighs over 375 pounds. During
setup and before startup, place the unit in the desired location and then fill the reservoir. Do not attempt
to lift the unit once it is filled and be careful to avoid spills when moving it, even over smooth ground.
Do not try to push it over rough or soft ground as you can overstress the wheels and frame and cause
structural and component damage, which is not covered by the warranty.
CAUTI N Never leave unit unatten e while in operation. Do not allow unit to run ry.
6

Water Supply Syste
The reservoir can be supplied continuously with an ordinary garden hose by attaching the supplied hose adapter
to the fill connection, or it can be filled manually.
With a continuous water supply connected, the float valve in the reservoir (like the one in your toilet tank) rises
and falls with the water level. A linkage attaches the float to the shutoff valve in the fill connection. As the water
level rises to normal operating level (about 5" deep), the float valve shuts off the water supply. When the water
level drops, the float valve reopens to maintain a normal operating level.
After unplugging the unit, the reservoir can also be filled manually with a hose or bucket if a hose connection is
impractical. Simply remove the cap and pour the water directly into the reservoir. When you fill the reservoir
manually it can be filled to a higher level, but be sure to watch the fill gauge to avoid overfilling and flooding.
Water Supply Sy tem
7
Actual WayCool® may
vary slightly from unit
shown here.
Fill pipe and cap
Water gauge
Manual Fill
Water damage due to overfilling is not covered by the warranty.
When you run the unit and fill it manually, check the water level frequently
so it does not run dry. The automatic shut-off feature is intended to
prevent operation of the pump without water, which can damage it or
reduce its service life. The cooling effect also stops if the pads dry.
Pads and grates must be in place before operating unit.

Water Supply Syste cont'd
A drain in the reservoir allows you to drain the unit for cleaning and maintenance. A drain cap on the underside
of the aluminum tray covers the drain during operation. Make sure the cap is in place before you fill the
reservoir. The drain cap should be finger-tightened only.
The pump is attached to a bracket, which in turn is fixed to the blower housing. The bracket holds the pump in
its proper position on top of the foam filter and slightly above the bottom, allowing sufficient space for water to
enter the pump suction.
The pump can be easily removed and replaced with the services of a qualified electrician.
A small plastic screen covers the pump inlet to prevent foreign matter from entering and damaging the pump
impeller. The screen snaps in place and can be easily removed for inspection or cleaning.
The pump sits on a foam filter; somewhat like a sponge. The filter traps dirt that could enter the water
distribution system and build up on the cooling pads, reducing their effectiveness. Dirt could also accumulate in
the PVC pipes and plug the spray holes.
The pump discharges through a fine screen washable filter which decreases the contamination of the cooling
pads and water system. The discharge filter casing is a clear plastic so dirt buildup on the internal screen is
easily visible. As dirt builds up, water flow to the cooling pads is reduced and performance decreases. The clear
filter housing is threaded and screws into the filter body for easy removal to access the screen.
A dirty water supply will quickly reduce the unit's performance and the unit will require more frequent
cleaning to maintain cooling effectiveness. Always try to use a filtered, treated water supply.
A clear vinyl hose connects the pump to the filter. From the filter, a "T" connector supplies two lines that run
along the bottom and up opposite frame corners to supply the PVC pipe with water. Each vinyl hose connects to
two PVC pipes which run horizontally along the top of the frame above the cooling pads.
The PVC pipes have a series of holes that run the full length of the pipe. Each PVC pipe is covered with a
plastic mesh sock which helps break up the water as it leaves the spray holes. This gives a more even water
distribution across the cooling pad and reduces splashing. The holes direct the water inward at a 90° angle to
continuously saturate the cooling pads from the top down. Excess water drains back to the reservoir through
drainage holes in the bottom support channels which support the cooling pads.
Water cleanliness has a major effect on the cooler's performance. Use a clean water supply and
consider a water softener if your water is hard. Dissolved solids in hard water deposit on the cooling
pad surfaces and reduce the airflow through the unit and therefore the amount of evaporation.
Pump
Pump impeller
Plastic screen
8

Cooling Pad Asse bly
The cooling pads are critical for proper, efficient cooler operation. They are made of laminated cellulose (paper)
fibers and arranged to give a large surface area for evaporation and to provide a rigid structure. The shape of
the cells allows high velocity airflow through the pad at a minimum pressure drop. At the same time, the air
passages between the cells force the incoming air to impinge on the wet cell surfaces and maximize
evaporation.
The WayCool® evaporative cooler also acts as an air filter and removes dust and other particles from
the air. This dirt collects on the cooling pads and lowers cooler efficiency. The pads should be cleaned
at least weekly and more frequently in dusty conditions. See Regular Cleaning under " peration and
Maintenance."
The pump supplies a continuous flow of water over the pads causing a "sheet flow" which constantly replaces
the water lost to evaporation and keeps the pads saturated.
One cubic foot of the cooling pad material holds about a gallon of water during operation. One cubic meter
holds about 100 liters of water.
The cooling pads are relatively strong but are subject to crushing, especially when wet. Always run the
unit with the plastic retaining grates in place and handle them carefully when you clean them. Crushed
cells reduce the total airflow through the unit and therefore lowers its cooling capacity.
The cooling pad sections (two sections per side, eight sections total) are held by metal channels at the top and
bottom of the unit. The channels hold the cooling pads in position and form four sidewalls to completely enclose
the unit.
The top channels house the PVC pipe, which run horizontally along the channel directly above the cooling pads.
The bottom channels have a series of holes drilled through them to allow excess water flowing down the cooling
pads to return to the reservoir.
The plastic retaining grates fit in front of the cooling pads and sit in the same channels as the pads; holding
them in place and protecting them from accidental damage. The plastic grates and cooling pads are easily
removed by placing a flat blade under the bottom and lifting upwards, then outwards. Once one pad is removed,
the others can be lifted up and out by hand without using a blade.
Do not remove or handle the cooling pads when they are wet, as they damage easily. Run the blower
without the pump until pads are dry. With normal care, the pads should last at least two seasons. Abuse
or mishandling will reduce their effectiveness and shorten their life.
9

Blower and Ductwork
The WayCool® evaporative cooler uses a belt-driven, 1 HP electric motor to drive a centrifugal blower. The
blower draws room air through the cooling pads and discharges the cooler air through the spout, displacing the
warmer air with cooler air and decreasing the temperature.
The blower is secured to the top of the frame and hangs upside down to direct the air out the top of the unit.
Brackets on each side of the blower casing secure the blower to the frame and hold it in position.
The electric motor is bolted to a metal bracket on the blower casing. A V-belt connects the pulley on the motor
shaft to the larger pulley on the blower shaft. Both shafts have sealed roller bearings, which do not require
lubrication.
A belt tensioner is connected to a bracket on the motor. A rubber foot at one end rests against the blower
bracket that is attached to the blower casing. When the locking nut is backed off, the bolt can be turned in to
tighten the V-belt or backed out to loosen or remove the V-belt.
Do not over tighten the V-belt as you can prematurely wear out the bearings.
The power cord runs down the frame leg that has the control switch on the outside. It exits the frame leg at the
bottom and has a male plug that must be plugged into a suitable GFCI-protected receptacle. The cord is
approximately nine feet long.
The standard unit requires 120 volts and 15 amps of power. This is normally available on most circuits.
However, if you are running a number of other items on the same circuit, you may trip the breaker.
Fan Blower
Actual WayCool® may
vary slightly from unit
shown here.
10