AAON LC-054 - Manual (Page 23)

23
Lubrication
All original motors and bearings are
furnished with an original factory charge of
lubrication. Certain applications require
bearings be re-lubricated periodically. The
schedule will vary depending on operating
duty, temperature variations, or severe
atmospheric conditions.
Bearings should be re-lubricated at normal
operating temperatures, but not when
running.
Rotate the fan shaft by hand and add only
enough grease to purge the seals. DO NOT
OVERLUBRICATE.
Service
If the unit will not operate correctly and a
service company is required, only a
company with service technicians qualified
and experienced in both refrigerant chillers
and air conditioning are permitted to service
the systems 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.
Replacement Parts
Parts for AAON equipment may be obtained
from AAON through customer service.
When ordering parts, reference serial
number and part number located on the
external or internal nameplate of the unit.
AAON - Longview Warranty, Service and
Parts Department
203 Gum Springs Rd.
Longview, TX 75602
Ph: 903-236-4403
Fax: 903-236-4463
www.aaon.com
Note: Before calling, technician should have
model and serial number of the unit
available for the customer service
department to help answer questions
regarding the unit.
Warranties
Please refer to the limitation of warranties in
effect at the time of purchase.
Condenser Tube Inspection
The coils are leak tested at 650 psig, before
shipment. AAON will not be responsible for
loss of refrigerant. It is the responsibility of
the installer to verify that the system is
sealed before charging with refrigerant.
Pump Operation
Before initial start of the pump, check as
follows:
1. Be sure that pump operates in the
direction indicated by the arrow on the
pump casing. Check rotation each time
motor leads have been disconnected.
2. Check all connections of motor and
starting device with wiring diagram. Check
voltage, phase and frequency of line circuit
with motor name plate.
3. Check suction and discharge piping and
pressure gauges for proper operation.
4. Turn rotating element by hand to assure
that it rotates freely.
Running:
Periodically inspect pump while running,
but especially after initial start-up and after
repairs.
1. Check pump and piping for leaks. Repair
immediately.
2. Record pressure gauge readings for future
reference.
3. Record voltage, amperage per phase, and
kW.