Blower Shaft Bearings
Blower shaft bearings are sealed and do not require oiling.
Pump Motor Bearings
The pump motor does not require lubrication.
Cleaning or Replacing Wet section Cooler Pads
CAUTION:
Disconnect all electrical power to the cooler
before attempting to install, open, or service your cooler.
More than one disconnect will be required to de-energize
the equipment for servicing. If the cooler is
thermostatically controlled, the thermostat is not to be
used as the power supply disconnect, as it may reset and
start the unit unexpectedly.
The condition of your cooler pads should be checked at least once a
year; at the beginning of the season is best. However, your pads may
need to be checked more frequently, depending on local air and water
conditions. For instance, in areas where mineral content of the water
is high or the air is dusty, deposits may build up in the cooler pads,
restricting airflow. Clean or replace pads as follows:
1. Disconnect power from unit.
2. Remove pads from wet section cabinet as follows:
a.
Remove inlet louver panels from cabinet.
b.
Remove top pan from cabinet.
c.
Remove water distributor cover and tube assembly.
d.
Remove pads by tilting slightly forward and carefully lifting
up and out. If passages are clogged or pad is dirty, hose off
inlet face of pad. Light,
gentle
brushing of the inlet edges of
the pad with a stiff bristle brush (do not use a wire brush) will
not harm the pad and will remove more stubborn scaling.
e.
If necessary, replace with new Aerocool pads, available only
from your Aerocool dealer. Aspen, expanded paper or other
types of evaporative cooling pads will not work and will void
your warranty.
3. Using a mild detergent, wash dirt and scale from the inside of the
wet section cabinet. Wire brushing is not recommended. If finish
is damaged or rusting is noted, repair as noted in the “Touch-Up”
section. Rinse with fresh water.
4. Reinstall pads, making sure they are positioned correctly
(painted stripe on pad placed to the bottom, facing outside).
5. Reinstall water distributor cover and tube assembly.
6. Reinstall top pan to wet section cabinet.
7. Reinstall inlet louver panels.
REPLACEMENT PARTS
When ordering replacement parts, always refer to the serial and
model number of your cooler. Use the part numbers listed in the
accompanying parts list, as illustrated in the diagrams for your model.
Adjust Belt Tension
Each time you inspect your cooler, be sure to check belt tension on
motor/blower assembly. Check belt condition and replace it if frays or
cracks appear. Check alignment of blower pulley with motor pulley
Cleaning Water Pump & Hose
CAUTION:
Disconnect all electrical power to the cooler
before attempting to install, open, or service your cooler.
More than one disconnect will be required to de-energize
the equipment for servicing.
If the cooler is
thermostatically
controlled, the thermostat is not to be
used as the power supply disconnect, as it may reset and
start the unit unexpectedly
.
CAUTION
: Do not allow pump to fall over and become
submerged; water will damage pump motor.
Clean pump, hose and distributor assembly as follows:
Unplug pump cord, remove mounting bracket screw and
remove pump from cooler. Shake gently to remove water.
To prevent breakage, carefully release the five snap-out tabs
in order noted on base plate and remove impeller base plate
from the pump body.
Using a mild detergent solution and a soft cloth, clean
deposits from screen, around impeller and base plate.
Spin impeller to dislodge any remaining foreign material.
Remove any foreign material in the hose adapter (between
the pump and hose), or between the hose and the water
distributor assembly.
Rinse and reinstall impeller base plate.
Reinstall pump and reconnect pump cord.
Draining
Drain the cooler (with water supply and power turned off ) as follows:
Connect a drain hose to the drain fitting on the bottom of the
reservoir, if not already connected to drain line.
Remove overflow standpipe from the drain fitting.
Drain and clean reservoir (never drain water onto a roof,
mineral build-up or damage to roof may occur).
Touch-Up
The hardness, adhesion and smoothness of the internal and external
finish on your cooler makes it extremely unlikely that scratches or
chipping will occur. In the event that finish damage does occur, it
should be promptly repaired by the following procedures:
1.
Sand the area around bare metal spots.
2.
Prime and paint with a quality paint.
Do not use asphalt type cooler undercoat material in water
reservoir.
Undercoat will break free, clogging the pump and
water distributor.
Lubrication
Motor Bearings
Some of the 3/4 & 1 Hp, single phase motors used in Industrial /
Commercial coolers have ports for lubricating the motor and are oiled
at the factory. If the need for oiling is indicated, see individual motor
nameplate for specific instructions on re-lubricating the motor. Under
normal use, these motors require oiling about every 12 months of
operation.
Do Not Over-Oil
.
The larger Hp motors use ball bearings and are permanently
lubricated and do not require lubrication.
.
6 UL Classified Aerocool Industrial / Commercial Evaporative Cooler Use and Care Manual
Ch
um
ac
era
s d
el e
je
d
e la
tu
rb
in
a
Co
jin
ete
s
de
l
eje
d
e
la
tu
rb
in
a
es
tá
n
se
lla
do
s
y
no
re
qu
ie
re
n
lu
bri
ca
ció
n.
Ch
um
ac
era
s d
e la
b
om
ba
La
s c
hu
ma
ce
ra
s d
e la
b
om
ba
e
stá
n p
erm
an
en
te
me
nte
lu
bri
ca
da
s.
Ca
mb
ia
nd
o o
re
mp
la
ce
lo
s f
ilt
ro
s
PR
EC
AU
CIO
N:
D
es
co
ne
cte
to
da
la
c
orr
ie
nte
e
lé
ctr
ic
a
de
l
en
fri
ad
or
an
te
s
de
in
te
nta
r
in
sta
la
r,
ab
rir
,
o
da
rle
se
rv
ic
io
a
s
u e
nfr
ia
do
r.
Po
sib
le
me
nte
s
e r
eq
uie
ra
a
pa
ga
r
má
s d
e u
n i
nte
rru
pto
r p
ara
d
es
co
ne
cta
r l
a c
orr
ie
nte
h
ac
ia
el
eq
uip
o p
ara
d
arl
e s
erv
ic
io
. S
i e
l e
nfr
ia
do
r e
s c
on
tro
la
do
co
n
te
rm
os
ta
to
,
no
lo
u
se
c
om
o
ma
ne
ra
d
e
co
rta
r
el
su
min
is
tro
d
e c
orr
ie
nte
, y
a q
ue
p
ue
de
a
cti
va
r l
a u
nid
ad
in
es
pe
ra
da
me
nte
.
Lo
s f
ilt
ro
s d
e s
u e
nfr
ia
do
r s
e d
eb
en
re
vis
ar
un
a v
ez
p
or
añ
o..
...
de
pre
fe
re
nc
ia
a
l
pri
nc
ip
io
d
e
la
te
mp
ora
da
.
O
cu
an
do
lo
s
filt
ro
s
re
qu
ie
ra
n r
ev
is
ars
e m
ás
fr
ec
ue
nte
me
nte
, d
e a
cu
erd
o c
on
e
l a
ire
y
la
s
co
nd
ic
io
ne
s d
el a
gu
a lo
ca
l.
Po
r e
je
mp
lo
, e
n á
re
as
d
on
de
e
l c
on
te
nid
o
de
m
in
era
le
s
de
l
ag
ua
e
s
alt
o
o
el
air
e
es
s
uc
io
,
de
pó
sit
os
s
e
ac
um
ula
n e
n l
os
fi
ltr
os
, r
es
tri
ng
ie
nd
o e
l f
lu
jo
d
el
air
e.
Re
em
pla
ce
lo
s
filt
ro
s c
om
o s
ig
ue
:
1.
Re
mu
ev
a e
l a
rm
az
ón
d
el g
ab
in
ete
.
2.
Re
mu
ev
a lo
s fi
ltr
os
d
el g
ab
in
ete
c
om
o s
ig
ue
:
a.
Re
mu
ev
a la
s r
ejil
la
s d
e e
ntr
ad
a d
el g
ab
in
ete
.
b.
Re
mu
ev
a la
ta
pa
d
e la
s
ec
ció
n h
úm
ed
a.
c.
Re
mo
ve
r e
l d
is
tri
bu
id
or
de
a
gu
a.
d.
Re
mu
ev
a lo
s p
an
ale
s li
ge
ra
me
nte
in
clin
an
do
h
ac
ia
e
l f
re
nte
y c
uid
ad
os
am
en
te
le
va
ntá
nd
olo
h
ac
ia
a
rri
ba
y
a
fu
era
. S
i lo
s
pa
sa
je
s
es
tá
n
ta
pa
do
s
o
el
pa
na
l
es
tá
s
uc
io
,
co
n
un
a
ma
ng
ue
ra
d
e j
ard
ín
y
p
re
sió
n l
ig
era
lim
pie
la
e
ntr
ad
a d
el
pa
na
l.
Ce
pill
e e
n f
orm
a li
ge
ra
y
s
ua
ve
c
on
c
ep
illo
d
e c
erd
as
du
ra
s
(n
o
us
e
ce
pill
o
de
a
la
mb
re
)
el
cu
al
no
d
añ
ará
e
l p
an
al y
re
mo
ve
rá
e
l s
arr
o d
uro
.
e.
Si e
s n
ec
es
ari
o,
re
mp
la
ce
c
on
p
an
ale
s n
ue
vo
s,
Dis
po
nib
le
s
so
la
me
nte
e
n
su
d
is
tri
bu
id
or
Ae
ro
co
ol.
A
sp
en
,
pa
pe
l
ex
te
nd
id
o u
o
tro
s t
ip
os
d
e f
ilt
ro
s e
va
po
ra
tiv
o n
o f
un
cio
na
n y
an
ula
n s
u g
ara
ntí
a.
3.
Us
an
do
d
ete
rg
en
te
lig
ero
,
la
ve
ti
err
a
y
sa
rro
e
n
la
p
art
e
de
ad
en
tro
e
n l
a s
ec
ció
n h
úm
ed
a.
No
s
e r
ec
om
ie
nd
a b
ro
ch
as
d
e
me
ta
l.
Si
el
ac
ab
ad
o e
stá
d
añ
ad
o o
n
ota
ó
xid
o,
re
pa
re
c
om
o s
e
in
dic
a e
n la
s
ec
ció
n "
Re
to
ca
r".
E
nju
ag
ue
c
on
a
gu
a li
mp
ia
.
4.
Re
in
sta
le
lo
s p
an
ale
s, a
se
gu
rá
nd
os
e q
ue
s
u p
os
ic
ió
n e
s c
orr
ec
ta
(R
ay
a p
in
ta
da
e
n la
p
art
e d
e a
ba
jo
d
el p
an
al h
ac
ia
a
fu
era
)
5.
Re
in
sta
le
e
l d
is
tri
bu
id
or
de
a
gu
a.
6.
Re
in
sta
le
la
ta
pa
de
ra
d
e la
s
ec
ció
n h
úm
ed
a.
7.
Re
in
sta
le
la
s r
ejil
la
s.
Re
em
pla
zo
D
e P
art
es
Cu
an
do
o
rd
en
e p
art
es
d
e r
ee
mp
la
zo
, s
ie
mp
re
re
fié
ra
se
a
l m
od
elo
y
nu
me
ro
d
e s
eri
e d
e s
u E
nfr
ia
do
r.
Us
e é
l n
úm
ero
d
e p
art
e e
n l
a
ac
om
pa
ña
nte
lis
ta
d
e p
art
es
, c
om
o e
sta
ilu
str
ad
o e
n lo
s d
ia
gra
ma
s d
e
su
m
od
elo
.
Aju
ste
te
ns
ió
n d
e l
a b
an
da
Ca
da
v
ez
q
ue
in
sp
ec
cio
ne
s
u e
nfr
ia
do
r,
se
a
se
gu
ra
d
e r
ev
is
ar
la
te
ns
ió
n d
e l
a b
an
da
e
n e
l e
ns
am
ble
d
e m
oto
r /
tu
rb
in
a.
Re
vis
e l
a
co
nd
ic
ió
n d
e l
a b
an
da
s
i t
ie
ne
d
es
ga
ste
u
o
tro
s d
efe
cto
s.
Re
vis
e l
a
alin
ea
ció
n d
e la
p
ole
a im
pu
ls
ad
a c
on
la
p
ole
a m
otr
íz
.
Lim
pie
za
d
e l
a b
om
ba
y
m
an
gu
era
PR
EC
AU
CIO
N:
D
es
co
ne
cte
to
da
la
c
orr
ie
nte
e
lé
ctr
ic
a
de
l
en
fri
ad
or
an
te
s
de
in
te
nta
r
in
sta
la
r,
ab
rir
,
o
da
rle
se
rv
ic
io
a
s
u e
nfr
ia
do
r.
Po
sib
le
me
nte
s
e r
eq
uie
ra
a
pa
ga
r
má
s d
e u
n i
nte
rru
pto
r p
ara
d
es
co
ne
cta
r l
a c
orr
ie
nte
h
ac
ia
el
eq
uip
o p
ara
d
arl
e s
erv
ic
io
. S
i e
l e
nfr
ia
do
r e
s c
on
tro
la
do
co
n
te
rm
os
ta
to
,
no
lo
u
se
c
om
o
ma
ne
ra
d
e
co
rta
r
el
su
min
is
tro
d
e c
orr
ie
nte
, y
a q
ue
p
ue
de
a
cti
va
r l
a u
nid
ad
in
es
pe
ra
da
me
nte
.
PR
EC
AU
CIO
N:
N
o p
erm
ita
q
ue
la
b
om
ba
s
e c
aig
a y
s
e
su
me
rja
; e
l a
gu
a d
añ
a e
l m
oto
r.
Lim
pie
la
b
om
ba
, l
a m
an
gu
era
y
la
e
ns
am
ble
de
d
is
tri
bu
id
or
co
mo
s
ig
ue
:
De
se
nc
hu
fe
e
l c
ord
ón
c
la
vija
d
e la
b
om
ba
, r
em
ue
va
e
l t
orn
illo
d
e
la
a
bra
za
de
ra
d
e l
a b
om
ba
y
re
mu
ev
a l
a b
om
ba
d
el
en
fri
ad
or.
Sa
cú
da
la
lig
era
me
nte
p
ara
re
mo
ve
rla
d
el a
gu
a.
Pa
ra
p
re
ve
nir
q
ue
s
e q
uie
bre
, c
on
c
uid
ad
o r
em
ue
va
la
s c
in
co
le
ng
üe
ta
s s
uje
ta
do
ra
s e
n l
a p
la
ca
d
e l
a b
as
e e
n l
a s
ec
ue
nc
ia
in
dic
ad
a e
n la
p
la
ca
d
e la
b
as
e y
re
mu
ev
a la
p
la
ca
d
e la
b
as
e d
el
im
pe
le
nte
d
el c
ue
rp
o d
e la
b
om
ba
.
Us
an
do
u
na
s
olu
ció
n d
e d
ete
rg
en
te
lig
era
, l
im
pie
lo
s d
ep
ós
ito
s
de
l c
ed
az
o d
e la
b
om
ba
, a
lre
de
do
r d
el i
mp
ele
nte
y
la
ta
pa
de
ra
d
e
la
b
as
e.
Gir
e e
l im
pe
le
nte
p
ara
d
es
ta
pa
r m
ate
ria
l a
je
no
.
Re
mu
ev
a
cu
alq
uie
r
ma
te
ria
l
(a
je
no
e
n
el
ad
ap
ta
do
r
y
la
ma
ng
ue
ra
), o
e
ntr
e la
m
an
gu
era
y
e
l d
is
tri
bu
id
or
de
a
gu
a.
En
ju
ag
ue
y
re
in
sta
le
la
c
ub
ie
rta
d
el i
mp
ele
nte
.
Re
in
sta
le
la
b
om
ba
y
e
nc
hu
fe
e
l c
ord
ón
d
e la
b
om
ba
.
Dre
na
nd
o
Va
cié
e
l d
ep
ós
ito
(c
on
la
c
orr
ie
nte
y
v
álv
ula
d
e a
gu
a a
pa
ga
da
)
co
mo
s
ig
ue
:
Co
ne
cte
la
m
an
gu
era
d
e d
re
na
je
e
n e
l f
on
do
d
el
de
pó
sit
o,
si
no
es
tá
y
a c
on
ec
ta
do
a
la
lí
ne
a d
e d
re
na
je
.
Re
mu
ev
a e
l b
uje
d
e r
eb
os
ad
ero
d
el b
uje
.
Va
cié
y
lim
pie
e
l d
ep
ós
ito
(n
un
ca
d
re
ne
e
l a
gu
a e
n e
l t
ec
ho
,
min
era
le
s s
e d
ep
os
ita
n o
d
añ
o a
l te
ch
o p
ue
de
o
cu
rri
r)
Re
to
ca
r
La
d
ure
za
, a
dh
es
ió
n y
s
ua
vid
ad
d
el a
ca
ba
do
in
te
rn
o y
e
xte
rn
o e
n s
u
en
fri
ad
or
ha
ce
q
ue
s
ea
e
xtr
em
ad
am
en
te
im
pro
ba
ble
q
ue
la
p
in
tu
ra
se
ra
sp
e o
s
e p
ele
. E
n u
n e
ve
nto
q
ue
e
sto
o
cu
rra
, s
e d
eb
e r
ep
ara
r
sig
uie
nd
o lo
s s
ig
uie
nte
s p
ro
ce
dim
ie
nto
s:
1.
Lije
e
l á
re
a a
lre
de
do
r d
e la
s p
art
es
d
e m
eta
l d
es
cu
bie
rta
s.
2.
Us
e p
in
tu
ra
d
e f
on
do
y
p
in
tu
ra
d
e b
ue
na
c
alid
ad
.
No
u
se
c
om
pu
es
to
s d
e a
sfa
lto
e
n e
l d
ep
ós
ito
d
e a
gu
a y
a q
ue
s
e
se
pa
ra
rá
, t
ap
an
do
la
b
om
ba
y
e
l d
is
tri
bu
id
or
de
a
gu
a.
LU
BR
IC
AC
IO
N
Ch
um
ac
era
s d
el
mo
to
r
Alg
un
os
m
oto
re
s p
eq
ue
ño
s (
3/4
y
1
C
F ,
mo
no
fá
sic
os
) u
sa
do
s e
n
en
fri
ad
ore
s
In
du
str
ia
le
s
/
Co
me
rc
ia
le
s
tie
ne
n
ac
eit
era
s
pa
ra
lu
bri
ca
rs
e
y
so
n
lu
bri
ca
do
s
en
la
fá
bri
ca
.
Si
la
n
ec
es
id
ad
p
or
lu
bri
ca
rs
e
es
in
dic
ad
a,
ve
a
la
p
la
ca
in
div
id
ua
l
de
l
mo
to
r
pa
ra
in
str
uc
cio
ne
s e
sp
ec
ífi
ca
s p
ara
re
lu
bri
ca
r e
l m
oto
r.
Ba
jo
u
so
n
orm
al,
es
to
s m
oto
re
s r
eq
uie
re
n lu
bri
ca
ció
n a
lre
de
do
r d
e c
ad
a 1
2 m
es
es
d
e
op
era
ció
n.
No
s
ob
re
-a
ce
ite
.
Mo
to
re
s
de
m
ás
a
lto
c
ab
alla
je
u
sa
n
co
jin
ete
s
de
b
ola
s
y
es
tá
n
lu
bri
ca
do
s p
erm
an
en
te
me
nte
y
n
o r
eq
uie
re
n lu
bri
ca
ció
n a
dic
io
na
l.
6
U
L C
las
ific
ado
A
ero
coo
l In
dus
tria
l /
Com
erc
ial
E
nfr
iad
or
Eva
por
ativ
o M
anu
al d
e U
so
y C
uid
ado
