Lubrication; Cleaning - AAON RL Series Installation, Service & Owners Information Manual

LUBRICATION

All original motors and bearings are furnished with an
orginal factory charge of lubrication. Certain applica-
tions require bearings be re-lubricated periodically. The
schedule will depend on the operating duty, tempera-
ture variations, or 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 - ALVANIA EP2
CHEVRON OIL - SRI No. 2
TEXACO INC. - PREMIUM RB2
MOBIL MOBILOX EP2
SERVICE
If the unit will not operate correctly and a service
company is required, only a company with service tech-
nicians qualified and experienced in both gas and elec-
tric heating as well as air conditioning and refrigerant
chillers be permitted to service the systems in order to
keep warranties in effect. If assistance is required, the
service technician must contact AAON.
NOTE: SERVICE TECHNICIAN MUST PROVIDE
THE MODEL AND SERIAL NUMBER OF THE UNIT
IN ALL CORRESPONDENCE WITH AAON.
ROOFTOP UNIT REPLACEMENT PARTS
Replacement parts for AAON equipment may be ob-
tained from AAON. When ordering parts, always refer-
ence the unit model number, serial number and part
number.
AAON, Inc.
Customer Service Department
2425 South Yukon Ave • Tulsa, OK 74107
Phone: 918-583-2266 • Fax: 918-382-6364
ALWAYS USE AAON SPECIFIED PARTS
! IMPORTANT
IT IS IMPORTANT TO KEEP COILS, BLOWERS
AND FILTERS CLEAN
TO ENSURE PROPER UNIT OPERATION
SERVICING & MAINTENANCE continued
Electric shock hazard. Shut off all electrical power
to unit to avoid shock hazard or injury from rotating
parts.
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.
CONDENSATE DRAIN
Check and clean each year at start of cooling season.
BLOWER
Inspect blower and blower section to keep free of dust or
debris. TURN OFF POWER BEFORE ATTEMPTING
TO CLEAN BLOWER WHEEL.
FILTER REPLACEMENT
TURN POWER OFF TO UNIT BEFORE ATTEMPTING
TO OPEN ACCESS DOOR TO REPLACE FILTERS.
The bank of filters are located in the walk-in filtering
section of the unit and are accessed through the filter
section door.
Filters should be check and inspected every 30 days and
replaced or cleaned as necessary.
Replace or clean old or dirty filters with the same size
filters as indicated on the filters.
19
! WARNING