Belt Adjustment
CAUTION
: Disconnect all electrical power to the cooler
and insure that belt is not rotating before adjusting belt
tension. Do not adjust belt tension by changing diameter
of adjustable sheave. Adjust belt tension only by adjusting
motor bracket.
Correct belt tension and alignment
is important, proper setup reduces
power consumption and prolongs
life of belt and motor. When
installing or adjusting belt, loosen
the motor adjustment bolts and
adjust to proper tension for each
model as listed. Do not tighten belt
by adjusting motor pulley.
Adjust Motor Pulley
When the cooler is connected to extended ductwork, the cooler
capacity and motor amperage may decrease due to the increased
duct resistance. The adjustable motor pulley is to be used ONLY to
return the cooler motor to it's maximum allowable amperage and
should not be readjusted except for this purpose.
CAUTION:
Do not exceed the maximum motor
amperage (FLA) stamped on the motor specification plate
or motor can be overloaded, damaging motor.
Check amperage with all doors, windows and exhaust
vents open and/or all relief systems operating.
Improper pulley adjustment will overload and severely
damage motor windings (this damage will NOT be covered
under warranty). Only qualified persons with proper
electrical equipment and knowledge should adjust
variable pitch sheaves.
CAUTION:
Never operate unit with access panels
removed. This will result in an overloaded condition and
may damage the blower motor.
Pump Junction Box
Recirculating Pump
CAUTION:
Do not allow pump to fall over and become
submerged; water will damage pump motor.
Recirculating pump(s) are necessary for Industrial / Commercial
cooler operation. Use pump kit number PK60LA for 115V applications
or PK62LA for 230V applications.
Mount pump junction box assembly (JBK115 for 115V pumps or
JBK230 for 230V pumps) in the location shown on page 7 for your
model. Connect pump receptacle wiring inside junction box to the
GFCI protected pump power supply wiring as shown in appropriate
wiring diagram (label attached to junction box, Figure 3).
Locate and install pump(s) in the location shown on page 7 for your
model. Plug pump cord(s) into junction box receptacle(s) and make
sure that plug is fully inserted. Place pump cord(s) into wire retainer
clips as shown (page 7), insuring that cord(s) does not touch the water
in the bottom pan or contact the wet pads.
Fig. 3
Fig. 4
Fig. 6
Motor Hp Belt Tension
¾
, 1, 1
½
, 2 25 lbs
3, 5 35 lbs
7
½
, 10 40 lbs
4 UL Classified Aerocool Industrial / Commercial Evaporative Cooler Use and Care Manual
Fig. 5
Install Overflow Standpipe / Drain Line
Install overflow drain bushing in bottom of cooler as follows:
Slide rubber washer over drain bushing.
Push drain bushing through bottom of
cooler, assemble and tighten lock nut.
Screw plastic overflow standpipe into the
drain bushing and tighten snugly (hand
tight) to prevent leakage.
Connect a suitable drain line (copper /
PVC / garden hose) to drain bushing.
Never drain water onto a roof; mineral
build-up or damage to roof may occur.
NOTE: Drain water in accordance with local plumbing codes.
Connect Water Supply
CAUTION: All plumbing installations must comply with
local building and safety codes, and must be performed
by qualified personnel only.
NOTE: Coolers should not be connected to “soft” water systems. Soft
water will accelerate corrosion and decrease the effective life of pads
and cooler cabinet. Connect water line as follows:
A water supply valve should be installed at a convenient location,
to allow the water supply to be turned on and off for servicing or
winterizing. Minimum 3/8 diameter tubing should be used to
provide water to the cooler, larger tubing is recommended if the
distance from the valve to the cooler is greater than 100 feet, then
reduced to 3/8” at the unit.
Install float valve in the bracket provided
.
Connect tubing from water supply to float valve. Place
compression nut and ferrule over end of tubing, insert tube into
float valve then tighten compression nut to secure.
Install Bleed-off
To minimize mineral scale “build-up”use the included bleed-off
assembly. Remove the cap from the bleed-off tee; insert the black
tubing and route the tubing through standpipe opening into the drain
line
bove the water level.
(see Figure 5)
(see Figure 6). To prevent siphoning of the water, make sure that
the bleed-off tee is a
In
sta
le
b
uje
d
e d
re
na
je
y
re
bo
sa
de
ro
In
sta
le
e
l b
uje
d
e r
eb
os
ad
ero
e
n e
l fo
nd
o d
el e
nfr
ia
do
r:
De
slic
e la
a
ra
nd
ela
d
e h
ule
e
n e
l b
uje
.
In
se
rte
e
l b
uje
e
n e
l a
gu
je
ro
d
el
fo
nd
o,
y
ap
rie
te
la
tu
erc
a.
Ato
rn
ille
e
l t
ub
o d
e r
eb
os
ad
ero
d
e p
lá
sti
co
al
bu
je
y
a
pri
éte
lo
lig
era
me
nte
(a
pre
ta
do
co
n la
m
an
o)
pa
ra
p
re
ve
nir
fu
ga
s.
Co
ne
cte
a
u
na
lí
ne
a a
de
cu
ad
a d
e d
re
na
je
(c
ob
re
/
P
VC
/
ma
ng
ue
ra
d
e ja
rd
ín
) a
l b
uje
de
d
re
na
je
.
Nu
nc
a
dre
ne
e
l
ag
ua
e
n
el
te
ch
o;
min
era
le
s s
e a
cu
mu
la
n o
d
añ
os
a
l
te
ch
o p
ue
de
n o
cu
rri
r.
NO
TA
: D
re
ne
e
l a
gu
a d
e a
cu
erd
o c
on
lo
s c
ód
ig
os
lo
ca
le
s d
e p
lo
me
ría
.
Co
ne
cte
e
l S
um
in
is
tro
d
e A
gu
a
PR
EC
AU
CIO
N:
T
od
as
la
s
in
sta
la
cio
ne
s
de
p
lo
me
ría
tie
ne
n q
ue
c
um
pli
r c
on
lo
s c
ód
ig
os
d
e e
dif
ic
ar
y r
eg
la
s d
e
se
gu
rid
ad
, y
ll
ev
ad
as
a
c
ab
o p
or
pe
rs
on
al
co
mp
ete
nte
so
la
me
nte
.
NO
TA
: L
os
e
nfr
ia
do
re
s n
o s
e d
eb
en
c
on
ec
ta
r a
s
is
te
ma
s d
e a
gu
a
“b
la
nd
a”.
A
gu
a b
la
nd
a a
ce
le
ra
la
c
orr
os
ió
n y
re
du
ce
la
v
id
a e
fe
cti
va
d
e
lo
s f
ilt
ro
s y
g
ab
in
ete
. C
on
ec
te
e
l s
um
in
is
tro
d
e a
gu
a a
l e
nfr
ia
do
r c
om
o
sig
ue
:
La
v
álv
ula
d
e s
um
in
is
tro
d
e a
gu
a p
od
ría
in
sta
la
rs
e e
n u
n s
iti
o
co
nv
en
ie
nte
,
pa
ra
p
erm
iti
r
ab
rir
y
c
err
ar
pa
ra
d
ar
se
rv
ic
io
o
ap
ag
ad
o d
e in
vie
rn
o.
Un
tu
bo
c
on
u
n m
ín
im
o d
e 3
/8
” s
e d
eb
e u
sa
r
pa
ra
e
l s
um
in
is
tro
d
e a
gu
a h
ac
ia
e
l e
nfr
ia
do
r, U
n t
ub
o m
ás
g
ra
nd
e
se
d
eb
e u
sa
r s
i la
d
is
ta
nc
ia
e
s m
ay
or
de
1
00
p
ie
s y
re
du
cid
a a
3
/8
”
en
la
e
ntr
ad
a d
e la
u
nid
ad
.
In
sta
le
la
v
álv
ula
d
el
flo
ta
do
r e
n l
a a
bra
za
de
ra
p
ro
ve
íd
a (
vé
as
e
Fig
ura
5
)
Co
ne
cte
u
n tu
bo
d
el s
um
in
is
tro
d
e a
gu
a a
l fl
ota
do
r. P
on
ga
la
tu
erc
a
de
c
om
pre
sió
n y
la
fé
ru
la
s
ob
re
e
l e
xtr
em
o d
el t
ub
o,
in
se
rte
e
l t
ub
o
en
la
v
álv
ula
y
a
pri
éte
lo
la
tu
erc
a d
e c
om
pre
sió
n b
ie
n.
I
ns
ta
le
e
l s
an
gra
do
Pa
ra
m
in
im
iz
ar
la
“a
cu
mu
la
ció
n d
e s
arr
o”
us
e l
a e
ns
am
bla
du
ra
d
e
sa
ng
ría
in
clu
id
a.
Re
mu
ev
a e
l t
ap
ón
d
el
ad
ap
ta
do
r “
T”
e i
ns
ert
e t
ub
o
ne
gro
y
g
uíe
lo
a
tr
av
és
d
el t
ub
o d
e r
eb
os
ad
ero
. P
ara
p
re
ve
nir
s
ifó
na
je
de
l a
gu
a,
as
eg
ure
q
ue
la
“T
” d
el
sa
ng
ra
do
e
sté
a
rri
ba
d
el
niv
el
de
l
ag
ua
.
Aju
ste
d
e b
an
da
PR
EC
AU
CIO
N:
D
es
co
ne
cte
to
da
la
c
orr
ie
nte
e
lé
ctr
ic
a
ha
cia
e
l e
nfr
ia
do
r y
a
se
gú
re
se
q
ue
la
b
an
da
n
o e
ste
d
an
do
vu
elt
as
a
nte
s d
e a
ju
sta
r l
a t
en
sió
n.
No
a
ju
ste
la
b
an
da
ca
mb
ia
nd
o e
l d
iá
me
tro
d
e l
a p
ole
a a
ju
sta
ble
. A
ju
ste
la
te
ns
ió
n s
ola
me
nte
a
ju
sta
nd
o e
n lo
s r
ie
le
s d
e la
b
as
e.
T en
sió
n d
e la
b
an
da
y
a
lin
ea
ció
n c
orr
ec
ta
es
im
po
rta
nte
, p
ro
pia
in
sta
la
ció
n r
ed
uc
e
co
ns
um
o d
e e
ne
rg
ía
y
e
xti
en
de
la
v
id
a d
e
la
b
an
da
y
la
d
el m
oto
r. C
ua
nd
o s
e in
sta
le
o s
e a
ju
ste
la
b
an
da
, a
flo
je
lo
s to
rn
illo
s d
e
aju
ste
d
el
mo
to
r
y
aju
ste
a
la
te
ns
ió
n
ap
ro
pia
da
p
ara
c
ad
a m
od
elo
c
om
o e
sta
lis
ta
do
a
ba
jo
.
No
a
ju
ste
la
b
an
da
aju
sta
nd
o la
p
ole
a d
el m
oto
r.
Aju
ste
d
e p
ole
a d
el
mo
to
r
Cu
an
do
e
l
en
fri
ad
or
es
ta
c
on
ec
ta
do
a
c
on
du
cto
s
ex
te
nd
id
os
,
la
ca
pa
cid
ad
d
el
en
fri
ad
or
y e
l a
mp
era
je
d
el
mo
to
r d
is
min
uy
e d
eb
id
o a
l
au
me
nto
e
n la
re
sis
te
nc
ia
d
el c
on
du
cto
. L
a p
ole
a a
ju
sta
ble
d
el m
oto
r
es
p
ara
s
er
us
ad
a s
ola
me
nte
p
ara
re
gre
sa
r e
l e
nfr
ia
do
r y
e
l m
oto
r a
s
u
má
xim
a c
ap
ac
id
ad
p
erm
iti
da
y
n
o s
e d
eb
e r
ea
ju
sta
r e
xc
ep
to
p
ara
e
ste
pro
pó
sit
o.
PR
EC
AU
CIO
N:
No
e
xc
ed
a
el
má
xim
o
am
pe
ra
je
d
el
mo
to
r (
FL
A)
es
ta
mp
ad
o e
n l
a p
la
ca
d
e e
sp
ec
ifi
ca
cio
ne
s
de
l m
oto
r o
e
l m
oto
r s
e p
ue
de
s
ob
re
ca
rg
ar
da
ñá
nd
olo
.
Re
vis
e
el
am
pe
ra
je
c
on
to
da
s
la
s
pu
ert
as
,
ve
nta
na
s
ve
nti
la
cio
ne
s y
/o
to
do
s lo
s s
is
te
ma
s d
e r
eli
ev
e o
pe
ra
nd
o.
Aju
ste
im
pro
pio
d
e
la
p
ole
a
mo
tri
z
so
bre
ca
rg
a
y
da
ña
se
ve
ra
me
nte
lo
s d
ev
an
ad
os
d
el
mo
to
r (
es
te
d
añ
o n
o e
s
cu
bie
rto
b
ajo
la
g
ar
an
tía
)
So
la
me
nte
p
er
so
na
s
ca
pa
cit
ad
as
c
on
e
l
eq
uip
o
ap
ro
pia
do
y
c
on
oc
im
ie
nto
de
be
n a
ju
sta
r p
ole
as
a
ju
sta
ble
s.
PR
EC
AU
CIO
N:
Nu
nc
a o
pe
re
la
u
nid
ad
s
in
lo
s p
an
ale
s
de
a
cc
es
o.
Es
to
re
su
lta
ría
e
n c
on
dic
ió
n d
e s
ob
re
ca
rg
a y
po
drí
a d
añ
ar
el m
oto
r d
e la
tu
rb
in
a.
Ca
ja
d
e e
mp
alm
e b
om
ba
Mo
nte
la
c
aja
d
e e
mp
alm
e d
e l
a b
om
ba
(J
BK
11
5 p
ara
b
om
ba
s d
e
11
5V
o
J
BK
23
0 p
ara
b
om
ba
s d
e 2
30
V)
en
e
l s
iti
o in
dic
ad
o e
n p
ág
in
a 7
pa
ra
s
u m
od
elo
. C
on
ec
te
e
l a
la
mb
ra
do
d
el
re
ce
ptá
cu
lo
d
e l
a b
om
ba
en
la
c
aja
d
e e
mp
alm
e a
la
fu
en
te
d
e p
od
er
pa
ra
la
b
om
ba
q
ue
te
ng
a
pro
te
cc
ió
n d
e G
FC
I c
om
o lo
in
dic
a e
l d
ia
gra
ma
d
e a
la
mb
ra
do
(F
ig
. 3
)
Bo
mb
a d
e r
ec
irc
ula
ció
n
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.
La
b
om
ba
(s
) d
e r
ec
irc
ula
ció
n s
on
n
ec
es
ari
as
p
ara
la
o
pe
ra
ció
n d
e lo
s
en
fri
ad
ore
s
In
du
str
ia
le
s
/
Co
me
rc
ia
le
s.
Us
e
el
ju
eg
o
de
b
om
ba
nú
me
ro
P
K6
0L
A p
ara
a
plic
ac
io
ne
s d
e 1
15
V o
P
K6
2L
A p
ara
2
30
V.
Lo
ca
lic
e e
in
sta
le
la
b
om
ba
(s
) e
n e
l s
iti
o in
dic
ad
o e
n p
ág
in
a 7
p
ara
s
u
mo
de
lo
. E
nc
hu
fe
e
l c
ord
ón
(e
s)
en
é
l(l
os
) r
ec
ep
tá
cu
lo
d
e l
a c
aja
d
e
em
pa
lm
e y
a
se
gu
re
q
ue
e
sté
b
ie
n e
nc
hu
fa
do
. A
co
mo
de
lo
s c
ord
on
es
de
la
b
om
ba
e
n la
s a
bra
za
de
ra
s p
ara
a
la
mb
re
in
dic
ad
o e
n (
pa
gin
a 7
)
as
eg
úre
se
q
ue
e
l
co
rd
ón
(e
s)
no
to
qu
e
el
ag
ua
e
n
el
fo
nd
o
de
l
de
pó
sit
o o
to
qu
en
lo
s fi
ltr
os
h
úm
ed
os
.
M
oto
r C
F
Ban
da
Ten
sió
n
¾
, 1
, 1
½
, 2
2
5 lb
s
3,
5
3
5 lb
s
7
½
, 1
0
40
lb
s
Fig
.3
4
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
Buj
e d
e D
ren
aje
Tu
bo
d
e
Re
bo
sa
de
r
Ara
nde
la
de
hul
e
Fon
do
Tue
rca
Fig
ura
4
Fig
ura
5
Fig
. 6
