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MAINTENANCE
To ensure
continuing
high performance,
and to minimize
the
possibility
of premature
equipment
failure,
periodic
mainte-
nance must
be performed
on this equipment.
This combina
tion heating/cooling
unit should be inspected
at least once each
year by a qualified
service person.
To troubleshoot
heating
or
cooling of units,
refer to tables
at the back of the book.
NOTE TO EQUIPMENT
OWNER:
Consult
your local dealer
about the availability
of a maintenance
contract.
The minimum
maintenance
requirements
for" this equipment
are as follows:
1. Inspect
air filter(s)
each month.
Clean or replace
when
necessary.
2. Inspect
indoor coil, drain pan, and condensate
drain each
cooling season
fox"cleanliness.
Clean when necessary.
3. Inspect blower motor and wheel fox"cleanliness
and check
lubrication
each heating
and cooling season.
Clean and
lubricate
(if required)
when necessary.
For" first heating
season,
inspect
blower
wheel
bimonthly
to determine
proper
cleaning
fi'equency.
4. Check
electrical
connections
for tighmess
and controls
fox" proper
operation
each heating
and cooling
season.
Service
when
necessary.
5. Check
and inspect
heating
section
before
each heating
season.
Clean and adjust
when
necessm T.
6, Check
flue hood screen
and remove
any obstructions
if
necessary.
7. Check
vent screen
and clean if necessary.
I. AIR FILTER
Inspect
air
filter(s)
at
least
once
each
month
and
replace
(throwaway
type)
or clean
(cleanable
type)
at least
twice
dur
ing each
heating
and
cooling
season
or whenever
the
filter(s)
becomes
clogged
with
dust
and
lint.
II. UNIT TOP REMOVAL
NOTE: When performing
maintenance
or service procedures
that require
removal
of the unit top, be sure to perform
all of
the routine
maintenance
procedures
that
require
top re-
moval,
including:
inspection
of the heat exchanger
area, coil
inspection
and
cleaning,
and
condensate
drain
pan
inspec
tion and cleaning.
Only
qualified
service
personnel
should
perform
mainte-
nance and service
procedures
that require
unit
top removal.
Refer to the following
top removal
procedures:
1. Turn
off gas supply,
then turn off electric
power to unit.
2. Remove all screws that secure
unit top, including
screws
around
4 sides and those on top that screw into internal
divider
panels.
Save all screws.
3. Lift top fi'om unit carefully.
Set top on edge.
4. Carefully
replace and secure unit top to unit, using screws
removed
in Step 2, when maintenance
and/or service pro
cedures
are completed.
(Be sure
to use original
screws
that have rubber
washers
to seal out water
when secur
ing top to internal
divider
panels.)
III. EVAPORATOR
BLOWER AND MOTOR
NOTE: Motors
without
oilers
are prelubricated.
Do not at-
tempt
to lubricate
these
motors.
For longer
life, operating
economy,
and continuing
efficiency,
clean accumulated
dirt and grease
from the blower wheel and
motor
annually.
Lubricate
the motor every 5 years
if the motor is used inter
mittently
(thermostat
FAN switch
in AUTO. position),
or ev
e W 2 years if the motor is used continuously
(thermostat
FAN
switch
in ON position).
To clean and lubricate
the blower motor
and wheel:
1. Remove and disassemble
blower
assembly
as follows:
a. Remove
blower
access door.
b. Disconnect
motor
lead fi'om blower
relay
(BR). Dis-
connect
yellow
lead
fi'om
terminal
L2
of the
contactor.
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