User`s manual

3.Inspectthefanblades%r cracks or bends
4. If fire needs to be removed, loosen the setscrew and slide the
fun off the motor shaft.
5. When replacing tim blade, position blade so the hub is 1/8 in.
away fi'om the motor end 11/8 in. of motor shaft will be
visible. See Fig. 12).
6. Ensure that setscrew engages the flat area on the motor shaft
when tightening.
7. Replace grille.
ELECTRICAL (ONTROLS AND WIRING
Inspect and check the electrical controls and wiring annually. Be
sz_re to 1urn rfl tke gas .s_lp?/y, and then tke eleetr/ea/ pot_ er ;o the
_znif.
Remove access panel to locate all the electrical controls and
wiring. (heck al! electrical connections for tightness. Tighten all
screw connections. If any smoky or burned connections are
noticed, disassemble the connection, clean all the parts, restfip the
wire end and reassemble the connection properly and securely.
After inspecting the electrical controls and wiring, replace the
access panel. Start the unit, and observe at least one complete
heating cycle arid one complete cooling cycle to ensure proper
operation. If discrepancies are observed in either or both operating
cycles, or if a suspected malfimction has occmTed, check each
electrical component with the proper electrical instrumentation.
Refer to the unit wiring label when making these checkouts.
NOTE: Refkr to the heating and/or cooling sequence of operation
in this publication as an aid in determining proper control
operation
REFRIGERANT CIRCUIT
Annually inspect all refi'igerant robing connections and the unit
base tbr oil accumulations. Detecting oil generally indicates a
refrigerant leak.
System urider pressure Relieve pressure arid recover al!
refrigerant before system repair or final unit disposal to avoid
serious injury or death. Use all service ports and open nil
flow=control devices, including solenoid vah'es.
If oil is detected or if low cooling perfbrmance is suspected,
leak-test all refi'igerant robing using an electronic leak=detector,
halide torch., or liquid-soap solmion If a refi'igerant leak is
detected, refer to the ('l_ecl;/br R@'igerat_f LeaI;s section.
If no refrigerant leaks are fbund and tow cooling performance is
suspected, refer to the ('becking and.4d]z_sfhg R@'/gerant (']ia_'ge
section.
GAS INPUT
The gas input does not require checking unless improper heating
performance is suspected. Ifa problem exists, refer to the Start-5})
section
EVAPORATOR AIRFLOW
The heating and/or cooling airflow does not require checking
unless improper perfbrmance is suspected. Ira pro/_/em exists, /:,e
.s_lre llIat all s_lp/)- a_'ld retail'n-airgrilles are olden and fi'eefi'om
ob.strz¢ctio_.s, and tkat tlie air filter is clean. When necessary, refer
to the Indoor .4i(flo_v at_d A i_;f](n_ A@¢stmet_s section to check the
system airflow.
METERING DEVKE A(UTROL DEVI(E
This metering device is a fixed orifice and is located in the header
to the evaporator coil
LIQUID LINE STRAINER
The liquid line strainer (to protect metering device) is made of wire
mesh and located in the liquid line on the inlet side of the metering
device.
TROUBLESNOOTNG
Use the Zl'o_lblc'skoofin_ Ch_ides (See Tables 1(_18) if problems
occur with these urks.
START-UP ¢HECKUST
Use the ,;;tar/{,_ (']_ee]dist to ensure proper start-up procedures are
followed.
3O