McLean T43 User manual

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INSTRUCTION MANUAL
McLean Cooling Technology
11611 Business Park Blvd N
Champlin, MN 55316 USA
Tel [phone]
Fax [phone]
www.McLeanCoolingTech.com
T-Series™
Air Conditioner
T43 Model
P
rotecting E
l
ectronics.
Exceeding Expectations.
™

10-1008-145 Rev. 10 Page 1
INSTRUCTION MANUAL
TABLE OF CONTENTS
Receiving the Air Conditioner...............................................................1
Handling and Testing the Air Conditioner.............................................1
Installation..............................................................................................2
Design Data, Model Drawing ................................................................3
Mounting Instructions............................................................................4
Components List ....................................................................................6
Wire Diagrams .......................................................................................7
Temperature Control..............................................................................8
Principles of Operation ..........................................................................8
Maintenance...........................................................................................8
Trouble Shooting .................................................................................11
McLean Cooling Technology Warranty ..............................................13
NOTE: Some of the information in this manual may not apply if a special unit was ordered. If
additional drawings for a special unit are necessary, they have been inserted. Contact McLean
Cooling Technology if further information is required.
RECEIVING THE AIR CONDITIONER
Inspect the air conditioner. Check for concealed damage that may have occurred during
shipment. Look for dents, scratches, loose assemblies, evidence of oil, etc. Damage evident upon
receipt should be noted on the freight bill. Damage should be brought to the attention of the
delivering carrier -- NOT to McLean Cooling Technology -- within 15 days of delivery. Save the
carton and packing material and request an inspection. Then file a claim with the delivering
carrier.
McLean Cooling Technology cannot accept responsibility for freight damages; however, we will
assist you in any way possible.
HANDLING & TESTING THE AIR CONDITIONER
If it is necessary to place the air conditioner in a horizontal position after unpacking, be certain it
is placed in an upright, vertical or mounting position for a minimum of five (5) minutes before
operating.
Never attempt to operate the air conditioner while it is horizontal or on its’ side, back or front.
The refrigeration compressor is filled with lubricating oil. Running the compressor without oil in
the lower part of the housing will cause permanent damage to the air conditioner. This also voids
the warranty.

10-1008-145 Rev. 10 Page 2
TEST FOR FUNCTIONALITY BEFORE MOUNTING THE AIR CONDITIONER TO THE
ENCLOSURE.
Refer to nameplate for proper electrical current requirements, then connect power cord to a
properly grounded power supply. Minimum circuit ampacity should be at least 125% of the
amperage shown in the design data section for the appropriate model. No other equipment should
be connected to this circuit to prevent overloading.
Operate the air conditioner for five (5) to ten (10) minutes. No excessive noise or vibration
should be evident during this run period. The condenser blower (ambient air), the evaporator
impeller (enclosure air), and the compressor should be running.
Condenser air temperatures should be warmer than normal room temperatures within a few
minutes.
The compressor is provided with automatic reset thermal overload protection. This thermo-
switch is located and mounted inside the plastic enclosure clipped to the compressor. The switch
operates when the compressor overheats due to clogged or dirty inlet air filter or if ambient air
temperatures exceed nameplate rating or if enclosure dissipated heat loads exceed the rated
capacity of the air conditioner. The thermal overload switch will actuate and stop compressor
operation. The blowers will continue to operate and the compressor will restart after it has cooled
to within the thermal overload cut-in temperature setting.
INSTALLATION
Step 1: Inspect air conditioner. Verify functionality before mounting the air conditioner, see
Handling & Testing the Air Conditioner on page 1.
Step 2: Using the cutout dimensions shown in this manual, prepare the air “IN” and air “OUT”
openings, and mounting bolt hole pattern for the enclosure.
Step 3: Using the gasket kit provided, install gaskets to air conditioner. See gasket kit illustration
in this manual for proper location.
Step 4: Mount air conditioner on enclosure using mounting bolts and screws provided. “EZ”
mount tabs can be used to hold unit on enclosure while mounting in place. Allow unit to remain
upright for a minimum of five (5) minutes before starting. Caution: Air conditioner must be in
upright position during operation.
Step 5: When routing the drain tube, caution should be taken to keep it from kinking or being
elevated above the exit point of the air conditioner. The drain tube must be on a continuous
downward slope. A slight elevation of the tube could result in secondary trap. FAILURE TO
FOLLOW THESE INSTUCTIONS COULD RESULT IN OVERFLOWING OF THE
CONDENSATE DRAIN PAN.
Step 6: Refer to top of nameplate for electrical requirements. Connect the power cord to a
properly grounded power supply. Use of an extension cord is not recommended. Electrical
circuit should be fused with slow blow or HACR circuit breaker.

10-1008-145 Rev. 10 Page 3
T43 Series
6000-10000 Btuh (1756-2928 Watts) H x W x D: 43" (1092) x 15.75" (400) x 11" (279)
Full BTU/Hr @ Max Amb Shipping
Load Max Amb Temp Weight
Model Voltage Hz Amps Phase Temp
oF/oC Lbs/Kgs
T43-0616-G15X 115 50/60 8.6 1 6310/6680 131/55 125/57
T43-0626-G15X 230 50/60 3.8 1 6520/6770 131/55 125/57
T43-0816-G15X 115 50/60 10.4/11.2 1 7900/8600 131/55 125/57
T43-0826-G15X 230 50/60 5.2/5.4 1 7400/8200 131/55 125/57
T43-1016-G15X 115 50/60 16/20 1 9670/10290 131/55 125/57
T43-1026-G15X 230 50/60 9.0 1 10040/10670 131/55 125/57
-X will be replaced with a three-digit number designating all desired options. Consult the factory for specific model
numbers.
T43 Model Drawings
6K BTU
8-10K BTU

10-1008-145 Rev. 10 Page 4
T43 Mounting Cutout Dimensions
Internal Cutout
External Cutout

10-1008-145 Rev. 10 Page 5
T43 Mounting Gasket Kit

10-1008-145 Rev. 10 Page 6
T43 Series Components List
Part Number (115 Volt)
Part Description 6000 BTU 8000 BTU 10000 BTU
Capacitor, Compressor, Start 10-1032-05 10-1032-08 10-1032-32
Capacitor, Compressor, Run S-6173 52-6032-01 52-6032-06
Capacitor, Impeller, Condenser 52-6084-01 52-6084-01 52-6031-03
Capacitor, Impeller, Evaporator 52-6084-01 52-6084-01 52-6084-01
Coil, Condenser 45-6051-00 45-6051-00 45-6051-00
Coil, Evaporator 43-6025-00 45-6050-00 45-6050-00
Compressor, RKA 10-1016-86 10-1016-85 10-1016-88
Filter, Air, Reusable 10-1000-96 10-1000-96 10-1000-96
Filter/Dryer 52-6028-00 52-6028-00 52-6028-00
Freeze Stat 10-1033-29 10-1033-29 10-1033-29
Head Pressure Control Switch 52-6104-26 52-6104-26 52-6104-26
Impeller, Condenser 10-1091-123 10-1091-123 10-1091-89
Impeller, Evaporator 10-1091-123 10-1091-123 10-1091-123
Relay, Compressor Start 10-1042-20 10-1042-07 10-1042-17
Service Cord 52-6035-143 52-6035-143 52-6035-85
Thermal Expansion Valve 99-0540-39 (cap tube) 10-1040-37 10-1040-38
Thermal Overload, Compressor TTC=8300MRAL19 OR
TI=MRA4761-114
TTC=8300MRAL22
OR TI=MRA4760-114
Internal
Thermostat, SPST, 55-100F 10-1061-16 10-1061-16 10-1061-16
Part Number (230 Volt)
Part Description 6000 BTU 8000 BTU 10000 BTU
Capacitor, Compressor, Start 10-1032-14 10-1032-08 10-1032-08
Capacitor, Compressor, Run S-6173 S-6173 52-6032-01
Capacitor, Impeller, Condenser 52-6084-02 52-6084-02 52-6084-05
Capacitor, Impeller, Evaporator 52-6084-02 52-6084-02 52-6084-02
Coil, Condenser 45-6051-00 45-6051-00 45-6051-00
Coil, Evaporator 43-6025-00 45-6050-00 45-6050-00
Compressor, RKA 10-1026-109 10-1026-108 10-1026-107
Filter, Air, Reusable 10-1000-96 10-1000-96 10-1000-96
Filter/Dryer 52-6028-00 52-6028-00 52-6028-00
Freeze Stat 10-1033-29 10-1033-29 10-1033-29
Head Pressure Control Switch 52-6104-26 52-6104-26 52-6104-26
Impeller, Condenser 10-1091-124 10-1091-124 10-1091-90
Impeller, Evaporator 10-1091-124 10-1091-124 10-1091-124
Relay, Compressor Start 10-1042-21 10-1042-08 10-1042-17
Service Cord 52-6035-141 52-6035-141 52-6035-141
Thermal Expansion Valve 99-0540-39 (cap tube) 10-1040-37 10-1040-38
Thermal Overload, Compressor TTC=8300MRAL20 OR
TI=MRA4765-114
TTC=8300MRAL23
OR TI=MRA1706-114
TTC=8300MRAL30
OR TI=MRA4764-114
Thermostat, SPST, 55-100F 10-1061-16 10-1061-16 10-1061-16

10-1008-145 Rev. 10 Page 7
T43 Generic Schematic (actual unit options may vary)
T43 Generic Wire Diagram (actual unit options may vary)

10-1008-145 Rev. 10 Page 8
TEMPERATURE CONTROL
The electromechanical thermostat is factory preset to 75oF/24oC. To change the temperature
setting, remove the nylon plug (if applicable) from the back face of the unit. Use a standard
screwdriver to adjust thermostat. For cooler temperatures turn clockwise, for warmer
temperatures turn counterclockwise. The set point of the thermostat equals the off temperature.
The on temperature is 10°F/5oC above the set point.
UNITS WITH HEAT
The heating thermostat is factory preset to 55°F/13oC. the set point for the heating thermostat
equals the on temperature. The off temperature is 10°F/5oC above the set point.
PRINCIPLES OF OPERATION
If electrical power to the air conditioner is interrupted and reapplied immediately, (within 3 to 5
seconds), the compressor may not restart due to the high back pressure of the compressor. It
takes a minimum of one (1) minute after shut-down for the compressor suction and discharge
pressures to equalize in order for the air conditioner to restart.
Operating the air conditioner below the minimum ambient temperature or above the maximum
ambient temperatures indicated on the nameplate voids all warranties.
It is recommended that the warranty section of this manual be read in order to familiarize
yourself with parameters of restricted operation.
The moisture that the enclosure air can contain is limited. If moisture flows from the drain tube
continuously this can only mean that ambient air is entering the enclosure. Be aware that
frequent opening of the enclosure’s door admits humid air, which the air conditioner must then
dehumidify.
MAINTENANCE
Compressor
The compressor requires no maintenance. It is hermetically sealed, properly lubricated at the
factory and should provide years of satisfactory operating service.
Should the refrigerant charge be lost, recharging ports (access fittings) on the suction and
discharge sides of the compressor are provided for recharging and/or checking suction and
discharge pressures.
Under no circumstances should the access fitting covers be loosened, removed or tampered with.
Breaking of seals on compressor access fittings during warranty period will void warranty on
hermetic system.
Recharging ports are provided for the ease and convenience of reputable refrigeration repair
service personnel for recharging the air conditioner.