AAON V3-E - Manual (Page 20)

www.aaon.com 20
Cleaning
Inspect and clean unit interior at the beginning of each
heating and cooling season and as operating
conditions require
.
Chilled Water
Check remote chiller operations as per the
manufacturer’s instructions. Check coolant flow valves
for correct operation and settings.
Lubrication
Most motors and bearings are permanently lubricated.
Some applications, however, will require that bearings
be re-lubricated periodically. The schedule will
depend on the operating duty, temperature variations
or other atmospheric conditions.
For bearings equipped with lubrication fittings the
lubrication schedule is dependent on operating
temperatures, and rotational speeds as shown in table
24.1 below. Lithium based grease conforming to an
NLGI grade No. 2 consistency is recommended. This
medium viscosity, low torque grease is rust inhibiting,
and water-resistant. It is satisfactory for operating
temperatures in the range of –10
°F to 250°F.
Bearings should only be re-lubricated when at normal
operating temperatures, and not running. Rotate the
fan shaft by hand, adding only enough grease to purge
the seals. A one-inch bearing has a total grease
capacity of only .25 ounces. Added grease should be
limited to .09 ounces.
Recommended greases are:
− SHELL OIL – DOLIUM R
− CHEVRON OIL – SRI No. 2
− TEXACO INC. – PREMIUM RB
Table 20.1, Fan Bearing Lubrication Schedule
Fan Speed Temperature Environment Greasing Interval
500 rpm Up to 150 °F Clean 2 to 6 months
1000 rpm Up to 210 °F Clean 2 weeks to 2 months
1500 rpm Up to 210
°F Clean Monthly
Any Speed Up to 150 °F Dirty 1 week to 1 month
Any Speed 210 - 250 °F Dirty Weekly
Service
In the event the unit is not functioning correctly and a
service company is required, only a company with
service technicians qualified and experienced in both
heating and air conditioning should 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, THE MODEL AND SERIAL
NUMBER OF THE UNIT WILL BE NEEDED FOR THE
WARRANTY SERVICE DEPARTMENT TO HELP
ANSWER QUESTIONS REGARDING THE UNIT.
AAON Coil Products
Phone: 1-903-247-9242
Fax: 903-236-4463
Warranty Department
Filters
Open filter access door. Slide filters towards you and
inspect. Replace old filters with the size indicated on
each filter or as shown in the table on the back cover
of this manual. Be sure arrow points toward the
blower. Filters should be checked every 30 days and
replaced or cleaned as necessary.
IT IS IMPORTANT TO KEEP COILS, BLOWERS,
AND FILTERS CLEAN!
DO NOT OVER
LUBRICATE!
(for filter sizes see back cover)