AAON RK-60 - Manual (Page 8)

8
SERVICING, TROUBLE SHOOTING & MAINTENANCE
LUBRICATION
All original blower motors and bearings are furnished
with an orginal factory charge of lubrication. Some
applications will require that bearings be re-lubricated
periodically. The schedule will depend on the operating
duty, temperature variations or other severe atmospheric
conditions.
Bearings should be re-lubricated when at normal oper-
ating temperatures, but not running. Rotate the fan
shaft by hand and add only enough grease to purge the
seals. DO NOT OVERLUBRICATE.
Recommended greases are:
SHELL OIL - DOLIUM R
CHEVRON OIL - SRI No. 2
TEXACO INC. - PREMIUM RB
SERVICE
In the event the unit is not functioning correctly and a
service company is required, a company with service
technicians qualified and experienced in both gas, elec-
tric heating and air conditioning be permitted to service
the systems in order to keep warranties in effect. The
service tech may call the factory if assistance is required.
BEFORE CALLING, HE SHOULD HAVE THE MODEL
AND SERIAL NUMBER OF THE UNIT AVAILABLE
FOR THE CUSTOMER SERVICE DEPARTMENT TO
HELP ANSWER QUESTIONS REGARDING THE
UNIT.
AAON, Inc.
Phone: 918-583-2266
Fax: 918-382-6364
Customer Service Department
COMMON CAUSES OF REDUCED AIR FLOW
A. DIRTY FILTERS - Filters must be inspected and
replaced on a regular basis. It is strongly recommended
that the media be replaced monthly. Clean filters are
your best insurance against premature system break-
down. Do not permit the unit to be operated unless the
filters are in place. Operation of the unit without filters
will result in a clogged evaporator coil - a very expensive
service job to correct.
B. OBSTRUCTION TO AIR FLOW - Supply and
return air grilles must be kept clear so air can be freely
discharged and drawn from the system.
CLEANING
Inspect unit interior at the beginning of each heating
and cooling season and as operating conditions require.
COILS
Evaporator coil(s) should be inspected and cleaned an-
nually to ensure there is no obstruction to air flow.
Condenser coil(s) should be inspected monthly. Clean
condenser coils annually and as required by location or
outdoor air conditions.
BLOWER
Inspect blower and blower section to keep free of dust or
debris. TURN OFF POWER BEFORE ATTEMPTING
TO CLEAN BLOWER WHEEL.
Typical slide-out blower section
CONDENSATE PIPING
Drain pans in any air conditioning equipment, even
when they have a built-in slope to the drain, will have
moisture present and will require periodic cleaning to
prevent any build up of algae of bacteria.
Cleaning of the drain pans will also prevent any
possible plugging of the drain lines and an over-
flow of the pan itself. All cleaning of the drain
pans and inside of the equipment should be done
by qualified personnel.
Typical 'P' trap
FOR PROPER UNIT OPERATION, DRAIN TRAP
MUST BE INSTALLED AS SHOWN.