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UNIT OPERATION HAZARD
Failuretofollowthiscaution may result in property damage.
Never operate your unit without filters in place. An
accumulation ofdustand lint on interna lpartsofyour unitcan
cause loss of efficiency.
!
CAUTION
Fans and Fan Motors
Periodically check the condition of fan wheels and housings and
fan--motor shaft bearings. No lubrication of condenser-- or
evaporator-- fan bearings or motors is required or recommended.
Indoor and Outdoor
Coils
Cleaning of thecoilsshould only be done by qualified serviceper-
sonnel. Contact your dealer for the required annual maintenance.
Condensate
Drain
The drain pan and condensate drain line should be checked and
cleaned atthesametimethecoolingcoilsarecheckedbyyourdeal-
er.
Compressor
Allcompressorsarefactoryshippedwitha normalchargeofthecor-
recttypeofrefrigerationgradeoilinthemandshouldrarelyrequire
additional oil.
Condenser
Fan
PERSONAL INJURY ANDUNIT DAMAGE HAZARD
Failureto follow thiswarning could resultin personalinjury,
death or property damage.
Do not insert sticks, screwdrivers, or any other object into
revolving fan blades.
!
WARNING
The fan mustbe keptfree ofallobstructions to ensure propercool-
ing. Contact your dealer for any required service.
Electrical Controls and W
iring
Electricalcontrolsaredifficulttocheckwithoutproperinstrumenta-
tion. If there are any discrepancies in the operating cycle, contact
your local dealer and request service.
Refrige rant
Circuit
Therefrigerantcircuitisdifficulttocheckforleakswithouttheprop-
erequipment.Ifinadequatecoolingissuspected,contactyourlocal
dealer for service.
EXPLOSION AND ENVIRONMENTAL HAZARD
Failureto follow thiswarning could resultin personalinjury,
death or property damage.
System under pressure. Relieve pressure and recover all
refrigerant before system repair or final unitdisposal. Use all
service ports and open all flow-- control devices, including
solenoid valves.
!
WARNING
Unit Panels
Afterperforminganymaintenanceorserviceontheunit,besureall
panels are fastened securely in place to prevent rain from ent ering
unitcabinetandtopreventdisruptionofthecorrectunitairflowpat-
tern.
REGULAR DEALER MAINTENANCE
In addition to thetypeofroutinemaintenanceyou might be willing
to perform, your unit should be inspected regularly by a properly
trained service technician.An inspection (preferably each year,but
at least every other year) should include the following:
1. Inspection and, if required, cleaning of the indoor coil
condensate drain.
2. Inspection and,if required,cleaning of theevaporatordrain
pan.
3. Inspectionandcleaningofblowerwheelhousingandmotor.
4. Inspection of all supply--air and return--air ducts for leaks,
obstructions, and insulation integrity.Any problems found
should be resolved at this time.
5. Inspectionoftheunitbasetoensurethatnocracks,gaps,etc.,
exist which may cause a hazardous condition.
6. Inspection of the unit casing for signs of deterioration.
7. Inspection of allelectricalwiring and componentsto ensure
proper connection.
8. Inspection forleaksin therefrigerant circuit.Pressure--check
to determine appropriate refrigerant charge.
9. Inspection of compressor oil level by service person to
ensureproperoillevelismaintainedinthecompressorwhen
it is installed and running.
10. Operational check of the unit to determine working
conditions.Repairoradjustmentshouldbemadeatthistime.
Yourservicingdealermayofferaneconomicalservicecontractthat
covers seasonal inspections. Ask for further details.
Completeservice instructions can befound in the unitInstallation,
Start-- up and Service Instructions.
Warranty Certificate
Your50ZPAunithasalimitedwarranty.Besuretoreadthewarranty
carefully to determine the coverage for your unit.
Before you call for s ervice...
...check for several easily--solved problems.
If insufficient heating or cooling is s uspected:
( ) Check for sufficient airflow.
( ) Check the air filter for dirt.
( )Check forb lockedreturn--airor supply-- airgrilles.Be sure they
are open and unobstructed. If these checksdo notreveal the cause,
call your servicing dealer.
If your unit is not operating at all, check the following list for
easy solutions:
( )Checktobesurethatyourthermostattemperatureselectorisset
belowtheindoortemperatureduringthecoolingseason.Besurethe
SYSTEM switch or MODE control is in the COOL position and
not in the OFF position.
( ) If your unit still fails to operate, call your servicing dealer for
troubleshooting and repairs. Specify the modeland serial numbers
of yourunit.(Recordthem inthismanualin thespaceprovided.)If
the dealer knows exactly which unit you have, he may be able to
offer suggestions over the phone, or save valuable time through
knowledgeable preparation for the service call.
In Case of Trouble
Ifyouperformthestepsaboveandunitperformanceisstill unsatis-
factory, shut off the unit and call your dealer.
Dealer’s Name
Telephone
Unit Model
Unit Serial Numb er