Essick Air N55S User Manual

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Installation
NOTE:  The pump comes installed.  The belt, motor pulley, and motor cord 
and fl oat are included in the cabinet, the motor is shipped separately.
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 Specifi cation Table.)
CAUTION:
  
Never plug in cooler until installation is complete 
and unit has been tested for rigidity.
• Install Duct Adapters.  If desired, a 4 piece duct 
adapter is available as an optional accessory.  
Call 1-800-643-8341 to obtain these from the 
factory.  Align the holes in the duct adapter to the 
holes in the blower opening and attach using the 
provided screws (see Fig. 1).  Repeat for all four 
sides.  Note:  All 4 pieces are identical except for 
models 5000SD & N55/65S which have an offset 
piece which attaches to the bottom of the outlet.  
To install this offset piece, remove the screws 
holding the cut-off plate and slide the offset duct 
adapter between the blower opening and the cut-
off plate.  You may need to loosen other screws 
to do this.  Line up the holes and secure with the 
screws previously removed.
Motor Installation
•  Install motor cord.  For typical 120V op-
eration, connect motor cord to motor using 
the following color code: Black - Hi, Red 
- Low, White - Com., Green - Ground. (See 
Wiring Diagrams)
•  Mount motor.  Install blower motor in the 
motor mount yokes, adjusting the yoke 
if necessary.  Fasten with the provided 
mounting clips (see Fig. 2).
•  Install pulley.  Install the adjustable mo-
tor pulley so that it aligns with the blower 
drive pulley (see Fig. 3) and tighten set 
screw.
Electrical Installation
WARNING:
  
Disconnect all electrical service that will be used 
for this unit before you begin the installation.
Com.
To Switch
Pump
Motor
Blower Motor
Red
Orange
Green
Black
Ground
Com.
Lo
Hi
= Wire Nut
Ground
Lo
Hi
Pump
Black
Red
White
Orange
Green
Green
Orange
Brown
White
Blue/Black
Motor 
Clips
Adjustable 
Yoke
Fig. 2
•  Remove junction box.  The elec-
trical junction box is located in the 
upper inside corner of the cooler 
cabinet.  Remove the two screws 
and remove the junction box (Fig. 
4).  Slide receptacles into slots in 
junction box.
•  Hook up electrical.  Electrical hook up should be done by a qualifi ed 
electrician, so that all electrical wiring will conform to your local standards.  
This unit is suppled with a 120V pump.  For 240V pump operation, a 240V 
pump must be purchased.  The fan and pump receptacles will support both 
120V and 240V installations.  See the wiring diagrams for 120V and 240V 
installations.  Note:  Clip pump cord onto cord clip located on the bottom 
of the junction box to keep cord our of the water.
 IMPORTANT:  When a single speed motor is used, do not use the red 
lead on the receptacle and motor plug wiring.  Tape off end of both of the 
red leads.
CAUTION:
 
 Pump receptacle is for grounded evaporative 
cooler pump only.  Do not plug anything else into receptacle.
WARNING:
  
Make sure the cooler cabinet is properly ground-
ed to a suitable ground connection for maximum safety.
Water Connection
•  Install overfl ow assembly.  Place drain nipple 
through the hole in the pan, with the rubber 
washer between the pan and the head of the 
drain nipple (Fig. 6).  Screw on  nut and draw 
up tight against bottom of pan.  Insert the 
overfl ow pipe in the nipple to retain water.  
The overfl ow pipe may be removed to drain 
the pan when necessary.  A garden hose may 
be screwed on the drain nipple to drain water 
away from your unit.
•  Connect water supply line.  Find the 
closest supply of water.  Use a saddle 
valve (Fig. 7) to connect 1/4” tubing to 
the cold water supply or use a Sillcock 
and water valve connected to an out-
side faucet (Fig. 8).  Place the nut and 
ferrule on the tubing and tighten the 
nut until water tight.  IMPORTANT:  
Do not connect the water supply to any 
soft water applications.  Soft water 
will cause corrosion and decrease the 
life of the cooler.
Wiring Diagrams
240 Volts
Fig. 5
120 Volts
Champion Air Balancing Method
1.  Take a piece of tissue paper and cut it lengthwise into 3 equal strips.
2.  Turn your cooler on high cool.
3.  Open one window at least six inches wide in each room that you want 
to cool.
4.  Take the piece of tissue paper and put it up against the screen of the open 
window furthest from the cooler discharge opening.  Let go of it.  It will 
do one of three things.
IF 
It falls down.
THEN 
CLOSE all of the windows one inch and try step 4 again.
IF 
It plasters itself to the screen.
THEN 
OPEN all of the windows one inch and try step 4 again.
IF 
It stays on the screen lightly.
THEN 
PERFECT.  You are done.  Enjoy your cooler.
NOTES:
•  When switching to low cool, you must rebalance your home.  Repeat step 
4.
•  Once you balance your home you can cool some areas more than others by 
opening those windows more and closing the others by the same amount.  
Repeat step 4 to make sure your home is still air balanced.
Blue/Black
White
Brown
Orange
Green
Green
Orange
White
Red
Black
Pump
Hi
Lo
Com.
Ground
= Wire Nut
Hi
Lo
Com.
Ground
Black
Green
White
Red
Blower Motor
Pump
Motor
To Switch
Blower 
Housing
Motor 
Pulley
Blower 
Pulley
Fig. 3
Rubber Washer
Overfl ow Pipe
Nipple
Bottom Pan
Nut
Fig. 6
Cold
Water
Pipe
Saddle 
Valve
1/4” Tubing
Fig. 7
Fig. 1
Duct Adapter
Cut-Off Plate
Screws
Fig. 4
Junction Box
Clip