Essick Air M301A User Manual

4

110522-1

Failure to 
start or no air 
delivery

Inadequate 
air delivery 
with cooler 
running

Inadequate 
cooling

1.  No electrical power to 

unit

 • 

Fuse 

blown

 • 

Circuit 

breaker 

tripped

 

•  Electric cord un-

plugged or damaged

2.  Belt too loose or tight
3. Motor overheated

 

•  Belt too tight

 

•  Blower bearings dry

4. Motor locked

1. Insuffi cient air exhaust

2.  Belt too loose

3. Pads plugged

1.  Inadequate exhaust in 

house

2.  Pads not wet

 • 

Pads 

plugged

 

•  Open spots in pads

 • 

Trough 

holes 

clogged

 

•  Pump not working 

properly

1. Check power

 • 

Replace 

fuse

 • 

Reset 

breaker

 

•  Plug in cords or 

replace if damaged

2.  Adjust belt tension
3.  Determine cause of 

overheating

 

•  Adjust belt tension

 

•  Oil blower bearings

4. Replace motor

1.  Open windows or 

doors to increase air 
fl ow

2.  Adjust belt tension or 

replace if needed

3. Replace pads

1.  Open windows or 

doors to increase air 
fl ow

2. Check water distribu-

tion system

 • 

Replace 

pads

 • 

Repack 

pads

 

•  Clean trough and 

unplug holes

 

•  Replace or clean 

pump 

Motor cycles 
on and off

Noisy

Excessive 
humidity in 
house

Musty or 
unpleasant 
odor

Water drain-
ing from 
cooler

1. Low voltage
2.  Excessive belt tension
3.  Blower shaft tight or 

locked

4. Bearings dry

1. Bearings dry
2.  Wheel rubbing blower 

housing

3. Loose parts

1. Inadequate exhaust

1.  Stale or stagnate water 

in cooler

2.  Pads mildewed or 

clogged

3.  Pads not wetting 

properly

 • 

Trough 

holes 

clogged

 

•  Pump not working 

properly

1.  Float arm not adjusted 

properly

2.  Drain assembly leak-

ing

1. Check voltage
2.  Adjust belt tension
3.  Oil or replace bear-

ings

4. Oil bearings

1. Oil bearings
2. Inspect and realign

3.  Tighten loose parts

1.  Open doors or win-

dows

1.  Drain pan and clean 

pads

2. Replace pads

3. Check water distribu-

tion system

 • 

Clean

 

•  Replace or clean 

pump 

 
1. Adjust fl oat

2.  Tighten nut and drain 

cap.

M201A

115

4.7

2

4.8

62

102

M301A / RM301A

115

7.9

2

9.2

107

184

M401A / RM401A

115

10.5

2

11.3

169

263