Carrier 50GL060300, 50GL048300, 50GL030300, 50GL024300, 50GL036300 Owner’s Manual

50GL

H_TUNG & COOLING

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A Guide To Operating and Maintaining Your

SingMe-Package EMectric CooMing Unit

NOTE TO mNSTALLER

This manual should be left _xith the equipment o_xner

Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance. Failure to
follow this warning could result in fire, serious injury, or

death

Do not use this unit if any part has been under water.

Immediately call a qualified service technician to inspect the
unit and to replace any part of the control system which has
been under water Failure to tk,llow this warning could result

in electrical shock, fire, serious ir_jury, or death.

SingMe°Package EMectric CooMing Unit

with Puron® (R-410A) Refrigerant

Be%re per%t_ning recommended maintenance, be sure the

main power s_'dtch to unit is turned off. Flectric shock could

cause serious i11iury or death.

TO START UNmT

Step l--Turn on the electrical power supNy to unit.
Step 2--Select temperature and set system switch to

desired mode.

TO SHUT UNmT OFF

If unit is being shut down because of a nmlfunction, call your
dealer as soon as possible

Step l--Set system switch to OFF.
Step 2--Turn off the emectrical power supply to unit.

ROUTmNE MAINTENANCE

All routine maintenance should be handled by skilled, experienced

personnel. Your dealer can help you establish a standard proce°

dure

For your safer?; keep the unit area clear and ti'ee of combustible
materials, gasolin< and other flamnmble liquids and vapors.

To assure proper ftmctioning of the unit, flow of condenser air
must not be obstructed fi'om reaching the unit ( learance of at least
36 in is required fiom top of unit and on sides except the power
entry side (42 in clearance) and the duct side (12 in n_ininmm
clearance).

MAINTENANCE AND CARE FOR THE EQUIPMENT

OWNER

Be%re proceeding with those things you might want to maintain

yourself, please careffilly consider the following:

1. TURN OFF ELECTRI(AL POWER TO YOUR UNIT
BEFORE SERVICING OR PERFORMING MAINTE=

NAN(E ELECTRIC SHOCK COULD (AUSE SERI=

OUS INJURY OR DEATH.

2. When removing access panels or per_brming maintenance
fm_ctions inside your unit, be aware of sharp sheet metal

parts and screws Although special care is taken to reduce

sharp edges to a n_ininmm, be extremely careftd when
handling parts or reaching into the unit.

AIR FILTERS Air filter(s) should be checked at least every 3
or 4 weeks and changed or cleaned whenever it becomes dirty.
Dirty filters produce excessive stress on the blower motor and can

cause the motor to overheat and shut down. Table 1 indicates the
coi_'ect filter size for your unit. Rei)r to Fig. 2 to access the

filter(s).
To replace or inspect filter(s) (or accessoD" filter rack when

supplied):

1. Remove the filter access panel using a 5il6-im nut driver.

2. Remove the filter(s) by pulling the filter(s) out of the unit. If
the filter(s) is dirty, clean or replace with new one.

When installing the new filter(s), note the direction of the airflow
arrows on the filter fi'ame.

If you have difficulty in locating your air filter(s), or if you have
questions concerning proper filter maintenance, contact your
dealer _br instructions. When replacing filters, always use the same
size and type of filter that was supplied originally by the installer.

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

PC 101 Catalog No 565-00014 Printed in U.S.A. Form OM50-28 Pg 1 6-00 Replaces: New

ACCESS PANEL

FILTER ACCESS
PANEL*

*For accessory fitter rack.

Fig.

2--Filter Access Panel--Vertical Supply

Shown

Table 1 -- Indoor=Air Fitter Data

UNiT SBZE FILTER SBZE

50GL024=030 20x20x1

50GL036 20x24x1

50GL042=060 24x30x1

Never operate your unit without filters in place. Failure to

heed this warning may result in damage to the blower motor
an_or compressor. An accumulation of cltlst and lint on

internal parts of your unit can cause toss of eiticiency and, in

Sonle cases, fire

FAN'S AND FAN MOTOR Periodically check the condition of

ihn wheels and housings and fan-motor shaft bearings. No tubrio
cation of condenser- or evaporator-ihn bearings or motors is

required or recommended.
EVAPORATOR AND CONDENSER COILS Cleaning of d_e

coils should only be done by qualified service personnel Contact

your dealer for the required annual maintenance

CONDENSATE DRAIN The drain pan and condensate drain
line should be checked and cleaned at the same time the cooling
coils are checked by your dealer.

COMPRESSOR All compressors are ibctolT=shipped with a

normal charge of the correct type reii'igeration grade oil in them

and should rarely require additional oil.
( ONDENSER FAN

The fan must be kept flee of all obstructions to ensure proper
cooling Contact your dealer for any required service

ELECTRICAL CONTROLS AND WIRING Electrical con-
trols are difficult to check without proper instrumentations: there°

ibre, if there are any discrepancies in the operating cycle, contact

your dealer and request service.

REFRIGERANT CIRCUIT The refi'igerant circuit is difficult
to check for leaks without the proper equipment; therel;ore, if

inadequate cooling is suspected, contact your local dealer ibr
service.

System under pressure. Relieve pressure and recover all
rei?igerant before system repair or final unit disposal to avoid
serious injury or death. Use all sela'ice ports and open all
flow-control devices, including solenoid valves.

"UNIT PANELS After perl'onning any maintenance or service
on the unit, be sure all panels are fhstened securely in place to
prevent rain fi'om entering unit cabinet and to prevent disruption of
the correct unit airflow pattern

REGULAR DEALER MAINTENANCE

In addition to the type of routine maintenance yon might be wil]ing
to perform, your unit should be inspected regularly by a properly
trained service technician An inspection (preferably each year, but
at least eveLw other year) should include the following:

1. Inspection and, if required, cleaning of the condenser and
evaporator coils.

2. Inspection and, if required, cleaning of the evaporator &ain
pan

3. Inspection and cleaning of blower wheel housing and motor

4. Inspection of all supplyoair and return-air &tcts [br leaks,
obstructions, and insulation integrity. Any problems found

should be resolved at this time

5. Inspection of the unit base to ensure that no cracks, gaps, etc.,
exist which may cause a hazardous condition.

6. Inspection of the unit casing ibr signs of deterioration

7. Inspection of all electrical wiring and components to assure
proper connection.

8. Inspection fbr leaks in the refrigerant circuit. Pressure-check
to determine appropriate refi'igerant charge.

9. Inspection of compressor oil level by service person to ensure
proper oil level is maintained in the compressor when it is

installed and running.

10. Operational check of the unit to determine working condio
tions. Repair or adjustment should be made at this time.

Your servicing dealer may of_Br an economical service contract
that covers seasonal inspections. Ask for filrther details.

Complete service instructions can be found in the unit Installation,
StartoETp and Service Instructions.

WARRANTY CERTmFICATE

"Unit 50GL has a limited warranty Be sure to read the warranty
carefi/tly to determine the coverage £_r your unit.

BEFORE YOU CALL FOR SERWCE, CHECK FOR SEV-

ERAL EASRLY-SOLVED PROBLEMS

If insufficient heating or cooling is suspected:
( ) (heck ibr sufficient airflow. Check the air filter for dirt. Check

for blocked retumoair or supply-air grilles. Be sure they are open
and unobstrtlcted. If these checks do not reveal the cause, call your
servicing dealer.

If your unit is not operating at all, check the fbllowing list for easy
solutions:

( ) (heck to be sure that your thermostat temperature selector is set
below the indoor temperature during the cooling season. Be sure
the system switch is in the COOL position and not in the OFF
position.