Keep This Manual
With Air Conditioner
AIR CONDITIONER
OPERATOR'S MANUAL
CAUTION
BEFORE INSTALLING AND
USING THIS AIR CONDITIONER,
IT IS IMPORTANT THAT THIS
MANUAL BE READ AND
UNDERSTOOD THOROUGHLY
KOOLTRONIC, INC.
30 Pennington-Hopewell Road
Pennington, NJ 08534
609•466-3400
FAX: 609• 466-1114
www.kooltronic.com
P24 SERIES
P28 SERIES
P36 SERIES
900-031-00
Find additional information on this
model at kooltronic.com, or use the
Technical Documents QR code
below.
Technical
Documents
TABLE OF CONTENTS
Page
I. Introduction 2
II. Incoming Inspection 3
III. Product Handling 3
IV. Product Identification Label 4
V. Principles of Operation 5
VI. Pre-Installation Testing 6
VII. Specific Model Data 7 - 10
Mounting
Drawings and Dimensions
Technical Data
Major Component Replacements
Wiring Schematics
VIII. Maintenance 11-12
IX. Trouble Shooting 13
X. Accessories 14
XI. Warranty 15
I. Introduction
Kooltronic Air Conditioners are designed to provide a cool, dehumidified environment for
your electronic components.There are models to fit vir tually all sizes and shapes of
electronics enclosures, in capacities ranging from 1,000 to 30,000 BTU/H. Our
"closed-loop" design also ensures that your components will not be exposed to hot, dirty
operating conditions.
This Manual provides you with the necessary general information for properly installing
and operating standard Kooltronic Air Conditioners. Technical data and mounting
instructions are presented on pages 7 through 10.
2
II. Incoming Inspection
Kooltronic Air Conditioners are designed, built and packaged to withstand the shock and vibration normally
associated with shipment by common carriers. Occasionally improper handling during shipping causes damage.
Such handling could include unbanding of palletized shipments, failing to respect "This Side Up" arrows, rough
handling, falling off conveyors, excessive v ibration, crushing, etc. Therefore, a thorough inspection should be
done upon receipt of all shipments. Any car ton tears, dents, scratches, loose articles or evidence of oil are signs
of damage and should be noted on the Freight Bill. Cartons should be opened promptly and the units inspected
for CONCEALED DAMAGE. Kooltronic Air Conditioners must be delivered in the proper mounting position to
assure that damage to the compressor has not occurred during shipping. Any Kool troni c Air Conditioner that is
delivered removed from the banded pallet, lying down or double stacked should be refused.
An immediate claim MUST be filed with the freight carrier and an inspection requested. Retain all packing
materials. Kooltronic cannot assume responsibility for Consignee's failure to file a timely freight claim.
III. Product Handling:
1) Do not attempt to operate your Kooltronic Air Conditioner until you read and thoroughly understand this
Manual. See section VI PRE-INSTALLATION TESTING.
2) Before operating the Kooltronic Air Conditioner be cer tain that it is placed in its correct mounting position.
All Air Conditioners containing an MM, NM, P, or V as part of the model number are designed to
operate in a vertical position only. All Air Conditioners containing an H, RT or RM in the model
number are designed to operate in a horizontal position only. This placement must be done a minimum
of 5 minutes prior to operating in order to allow the compressor oil to drain to the compressor sump area.
CAUTION
3) Before operating this unit, all electrical wiring must be checked to assure the proper connection to the
correct power source. Minimum circuit ampacity should be at least 125% of the amperage found on the air
conditioner label for the corresponding voltage. Do not exceed the maximum fuse size found on the label.
4) We do not recommend that Air Conditioners be shipped to their final destination attached to an enclosure.
In the event that the Air Conditioner needs to be shipped attached to an enclosure it is strongly
recommended that proper support be provided for the Air Conditioner. Excessive vibration can occur if Air
Conditioners are not properly supported when shipped on enclosures, increasing the potential for internal
damage and voiding the warranty.
5)
PROCEDURE FOR PROPER PACKING AND SHIPMENT OF KOOLTRONIC AIR
CONDITIONERS:
■
Keep Air Conditioner in proper upright position indicated by arrow markers.
■
Pack Air Conditioner in an appropriate carton (preferably original carton if possible), with
adequate internal protective packaging, making sure carton is marked and is kept in correct
upright position.
■
For local, controlled transportation, strap carton to a secure par t of truck to prevent falling or
sliding, minimize vibration, etc.
■
For common carrier shipment, band unit(s) securely to a pallet. Unpalleted shipment risks
severe damage which voids the warranty.
3
Kooltronic Air Conditioners must be operated in their proper mounting position. If attempts are
made to operate a unit that is not in its designed mounting position, permanent compressor
damage will occur. This action will void the warranty. To avoid compressor damage do not tip the
unit more than 45° from its proper mounting position.
IV. Product Identification and Labels
Each Kooltronic Air Conditioner includes an identification label. This label provides:
À Model Number
Á Serial Number
 Electrical power characteristics
à Maximum and minimum ambient operating temperatures
Ä Cooling capacity
Å Type and amount of refr igerant required for recharging
Æ Design Pressure
Ç Underwriters Laboratories Inc.Listed or Recognized Marks and NEMA ratings
We recommend you copy this information from your unit.
Air Conditioner
MODEL NO. SERIAL NO.
À Á
VOLTS. FREQ. PH. F.L.A. MIN.oF MAX oF
    à Ã
COOLING BTU REFRIGERANT
ÄÅ
DESIGN PRESSURE P.S.I.G.
LOW HIGH MAX. FUSE SIZE
ÆÆ Â
COOLING AMBIENT TEMP.
Ç
ÀÁ When ordering parts, specify
the Model Number and Serial
Number.
 Before operating, be sure that
the power source matches these
requirements.
ALLOW 5 MIN. BEFORE RESTARTING AFTER SHUTDOWN
UNAUTHORIZED SERVICE OR MODIFICATION VIOLATES WARRANTY
THIS PRODUCT IS PROTECTED BY ONE OR MORE OF THE FOLLOWING
PATENTS: 3,019,965 3,120,166 3,211,360 3,559,728 3,807,493 AND
OTHER PATENTS PENDING
MANUFACTURED BY:
KOOLTRONIC, INC. PENNINGTON, NJ VENTURA, CA
SERVICE AIR FILTERS REGULARLY
ALL MOTORS ARE THERMALLY PROTECTED
à Make surethat these parameters
are met. Failure to do so may result
in permanent damage to the unit
Å Use of incorrect type or amount
of refrigerant will adversely affect
performance and may damage the
unit.
4
5
V. Principles of Operation
Kooltronic Air Conditioners are required when the equipment operating temperature m ust be k ept near
or lower than the ambient room temperature, and/or the cabinet must be sealed from dust, fumes, oil,
corrosives and other contaminants. This Air Conditioner utilizes a “Closed-Loop Cooling System” to
ensure optimum performance of the installed components.
Closed-Loop cooling seals the electronics enclosure from hostile elements in the environment. Two
separate circulation systems are employed.The internal system cools and dehumidifies the air inside
the cabinet, totally isolating the sensitive electronics and other components from the environment.The
external system uses circulating ambient air or water to discharge the heat removed from the
electronics.The heat is dissipated from the enclosure by means of the vapor compression refrigeration
cycle. This takes place in a hermetically-sealed refrigeration system, utilizing either an air-cooled or
water-cooled condenser heat exchanger. The warm air inside the enclosure is drawn through the
evaporator coil where it is cooled, dehumidified and retur ned.
Any enclosure moisture accumulated on the evaporator coil is collected in the condensate tray and
released to the ambient air through the drain tube or the condensate evaporator.
The heat removed through the evaporator coil is transferred by the compressed refrigerant to the
condenser coil. Ambient air or water is then passed through the condenser coil, where it absorbs the
heat and is then discharged to the environment.
The cool air discharge temperature is regulated by the capacity control (hot gas bypass) valve. The
unit is equipped with a Low Temperature Thermostat to prevent over-cooling. In applications having
frequent voluntary heat load fluctuations, an optional Compressor Short Cycle Protector is recommended.
6
VI. Pre-Installation Testing
Before mounting the air conditioner to the enclosure, test for proper operation. This will verify the
shipping integrity of the system. Please follow the steps below prior to installation.
CAUTION
1. Allow the unit to sit in a upright position at a room temperature of 65°F minimum, allowing the
system to warm-up. This is particularly important in winter months.
2. Refer to the identification label for proper electrical voltage and current requirements. Then connect
the power cord to a properly grounded and fused electrical supply. Leave the electrical power off.
3. Note the factory thermostat setting which is typically 75 to 80°F.
4. Adjust thermostat to its maximum setting.
5. If your unit is equipped with an on-off switch, move it to the on position.
6. Turn electrical power on.
7. Verify that the evaporator blower or fan is running.
8. Adjust the thermostat to its minimum setting. The compressor should start. On units equipped with a
short cycle protector, the compressor will have a delayed start of 6 minutes from the time power is
applied to the unit.
9. Verify that the condenser blower or fan is running. Note , on units equipped with a lo w ambient kit, the
start of the condenser fan or blower will be delayed until the system pressures rise.
10. Operate the air conditioner for approximately ten (10) minutes. During this period no unusual
noise or vibration should be evident. Both the evaporator and condenser fans or blowers should
be delivering air through their respective discharge ports. The cool discharged air should be less
than 70°F when the room temperature is between 70 and 80°F.
11. On units equipped with heaters, adjust both the cooling and heating thermostats to their maximum
settings. Verify that the compressor and condenser fan or blower has stopped. Verify elevated
dis charge air temperature from the evaporator air discharge.
12. If your unit is equipped with an on-off switch, leave it in the on position. Return the cooling
the r mo stat to its original setting. If unit is equipped with a heater, retur n the heating thermostat to
its original position.
13. Turn off the electrical power source, and disconnect the air conditioner from the power source.
14. If any cover plug is removed to adjust the unit, make certain to put it back in place to maintain the
integrity of the closed-loop airflow system.
NOTE: Before shipment all Kooltronic, Inc. Air Conditioners are subjected to a performance test.
The Air Conditioner must be standing in its proper mounting position for a minimum of
five (5) minutes prior to testing. Failure to follow this procedure will cause permanent
damage to the compressor.
VII. Specific Model Data
Mounting
Kooltronic Air Conditioners have been engineered to be installed easily. To avoid damaging
your Air Conditioner, please read the following information before installation.
•
Panel-Mounted Air Conditioners are equipped with two ver tical mounting rails.
These rails can be mounted to any available vertical surface on the enclosure.
• Refer to page 8 for the location of all mounting holes and cutouts.
• Make sure the cutouts don't interfere with components inside your cabinet.
• Proper alignment of all air inlets and outlets is essential for optimum performance
of the Air Conditioner.
• All externally-mounted Air Conditioners are fully gasketed to ensure proper sealing.
This seal is necessary to maintain the integrity of the closed loop system.
• Use all existing mounting holes to insure stability and a tight seal.
• High strength mounting screws are recommended.
• Attach the brass drain pan fitting and drain hose supplied to the drain exit on the
bottom or lower side panel of the Air Conditioner. The optional field installed
Condensate Evaporator is mounted underneath the Air Conditioner and the drain
hose is connected to the top fitting of the Condensate Evaporator. The drain hoses,
fittings and Condensate Evaporator must be removed before dismounting the Air
Conditioner, as they will not suppor t the weight of the Air Conditioner unit.
• The external drain hose must not be elevated above the exit port. Improper mounting
will impede the flow of condensate and may cause internal malfunctions.
CAUTION
Major Component Replacements
P28 & P36 P28 & P36 P36
P24 2000-4000 BTU 5000-7000 BTU 8000 BTU
Part Part Number Part Number Part Number Part Number
Compressor 0665-101 0665-101 0665-103 0665-42
Compressor Capacitor N/A N/A N/A 0452-32
Condenser Blower Motor 0261-13 0261-08 0261-08 0261-08
Condenser Blower Motor Capacitor N/A 0452-03 0452-03 0452-06
Condenser Blower Assembly 5417-00-25 5417-00-35 5417-00-35 6015-00-129
Evaporator Blower Motor 0261-13 0261-13 0261-13 0261-08
Evaporator Blower Motor Capacitor N/A N/A N/A 0452-03
Evaporator Blower Assembly 5417-00-25 8009-00-38 5417-00-25 5417-00-35
Filter 8751F 8751F 8751F 12251F
NOTE: Part Numbers shown are for 115v/60Hz/1Ø.For 230v/60Hz/1Ø and all 50Hz consult Kooltronic.
If the Air Conditioner is mounted to the cabinet door you must be sure
that the door hinges will support the additional weight of the Air
Conditioner. Also be certain that when the door is opened fully, the
cabinet does not become unbalanced. The actual weight of the unit can
be found on page 9.
7
28
9
/
16
3
3
/
4
23
1
/
8
28
9
/
16
21
1
/
2
POWER
CORD
THERMOSTAT
ADJUSTMENT
DRAIN
FILTER
17
24
9
1
/
2
FILTER
THERMOSTAT
ADJUSTMENT
DRAIN
17
9
1
/
2
POWER
CORD
19
18
5
/
16
(8)
.312 DIA.
HOLES
7
TYP.
3
24
17
1
/
2
2
7
/
16
13
1
/
2
1
1
/
2
19
18
5
/
16
(8)
.312 DIA.
HOLES
7
TYP.
1.50 DIA.
POWER
CORD
HOLE
13
1
/
2
TYP.
1
2
3
C
L
➀
➁
➂
➃
➀
➁
➂
➃
➂
➃
➂
➃
WARM AIR RETURN
FROM ENCLOSURE
(Enclosure opening should be located as
high as possible within this area, and equal
or exceed size of cool air outlets.)
FILTERED
CONDENSER AIR INLET
(Ambient Air In)
CONDENSER OUTLET
(Warm Ambient Air Out)
COOL AIR OUTLET
TO ENCLOSURE
À Á ➂ Ã
5
/
16
2
3
/
4
5
/
16
2
3
/
4
Drawings and Dimensions
P24 SERIES
P28 & P36 SERIES
MOUNTING PLAN
Dimensions (inches) are for reference only and are subject to change.
DIMENSIONS
Model ABCDE
P28 Series 28
P36 Series* 36
* Consult factory for dimensions of 8,000 BTU/H P36.
(inches)
9
13
/
16
/
16
3
/
3
4
7
/
8
1
/
23
31
821
8
3
/
12 29
8
1
/
2
3
/
4
8
* Switchable. Switch is internally-mounted for security.
** Rating shown is for operation at maximum ambient temperature.
"
115V, 60 Hz and 230V, 60 Hz models also perform at full capacity when operated
at 100V, 50 Hz or 200V, 50 Hz respectively. No transformer is required.
G
KA4C1P_ _L 1000 120/50 115/100 60/50 14.2 90 90 110
G
KA4C1P_ _L56 1000 120/50 115 50/60* 14.2 90 90 110
G
K2A4C1P_ _L 1000 125/50 230/200 60/50 6.2 90 90 110
G
K2A4C1P_ _L5 1000 125/50 230 50 6.2 90 90 110
G
KA4C2P_ _L 2000 120/50 115/100 60/50 14.2 90 90 110
GG
KA4C2P_ _L 2000 125/50 115/100 60/50 12.0 90 90 110
G
KA4C2P_ _L56 2000 120/50 115 50/60* 14.2 90 90 110
GG
KA4C2P_ _L56 2000 120/50 115 50/60* 12.5/12.0 90 90 110
G
K2A4C2P_ _L 2000 125/50 230/200 60/50 6.2 90 90 110
GG
K2A4C2P_ _L 2000 125/50 230/200 60/50 5.9/5.8 90 90 110
G
K2A4C2P_ _L5 2000 125/50 230 50 6.2 90 90 110
GG
K2A4C2P_ _L5 2000 125/50 230 50 6.0 90 90 110
G
KA4C3P_ _L 3000 120/50 115/100 60/50 14.2 90 90 110
GG
KA4C3P_ _L 3000 125/50 115/100 60/50 12.0 90 90 110
G
KA4C3P_ _L56 3000 120/50 115 50/60* 14.2 90 90 110
GG
KA4C3P_ _L56 3000 120/50 115 50/60* 12.5/12.0 90 90 110
G
K2A4C3P_ _L 3000 125/50 230/200 60/50 6.2 90 90 110
GG
K2A4C3P_ _L 3000 125/50 230/200 60/50 5.9/5.8 90 90 110
G
K2A4C3P_ _L5 3000 125/50 230 50 6.2 90 90 110
GG
K2A4C3P_ _L5 3000 125/50 230 50 6.0 90 90 110
G
KA4C4P_ _L 4000 120/50 115/100 60/50 14.2 90 90 110
GG
KA4C4P_ _L 4000 125/50 115/100 60/50 12.0 90 90 110
G
KA4C4P_ _L56 4000 120/50 115 50/60* 14.2 90 90 110
GG
KA4C4P_ _L56 4000 120/50 115 50/60* 12.5/12.0 90 90 110
G
K2A4C4P_ _L 4000 125/50 230/200 60/50 6.2 90 90 110
GG
K2A4C4P_ _L 4000 125/50 230/200 60/50 5.9/5.8 90 90 110
G
K2A4C4P_ _L5 4000 125/50 230 50 6.2 90 90 110
GG
K2A4C4P_ _L5 4000 125/50 230 50 6.0 90 90 110
G
KA4C5P_ _L 5000 120/50 115/100 60/50 14.2 90 90 110
GG
KA4C5P_ _R 5000 125/50 115/100 60/50 17.6/19.8 90 90 110
G
KA4C5P_ _L56 5000 120/50 115 50/60* 14.2 90 90 110
GG
KA4C5P_ _R56 5000 125/50 115 50/60* 17.6 90 90 110
GG
K2A4C5P_ _L 5000 125/50 230/200 60/50 9.5/9.9 90 90 110
GG
K2A4C5P_ _L5 5000 115/50 230 50 8.0 90 90 110
GG
KA4C6P_ _R 6000 125/50 115/100 60/50 17.6/19.8 90 90 110
GG
KA4C6P_ _R56 6000 125/50 115 50/60* 17.6 90 90 110
GG
K2A4C6P_ _L 6000 125/50 230/200 60/50 9.5/9.9 90 90 110
GG
K2A4C6P_ _L5 6000 115/50 230 50 8.0 90 90 110
GG
KA4C7P_ _R 7000 125/50 115/100 60/50 17.6/19.8 90 90 110
GG
KA4C7P_ _R56 7000 125/50 115 50/60* 17.6 90 90 110
GG
K2A4C7P_ _L 7000 125/50 230/200 60/50 9.5/9.9 90 90 110
GG
K2A4C7P_ _L5 7000 115/50 230 50 8.0 90 90 110
G
KA3C8P_ _R 8000 120/50 115/100 60/50 18.0/17.5 90 90 110
G
KA3C8P_ _R56 8000 115/50 115 50/60* 16.5/18.0 90 90 110
G
K2A3C8P_ _L 8000 115/50 230/200 60/50 9.5 90 90 110
G
K2A3C8P_ _L5 8000 120/50 230 50 7.9 90 90 110
Approx.
Series
**
Ambient
**
Weight
Height BTU/H Temp. °F Running (lbs.)
24 28 36 Model Rating Max./Min. Volts Hz Amps 24 28 36
Technical Data
""
9
Units in BOLD are current standard products. Other units are prior product offerings and shown for reference only.
Wiring Schematics
COIL
RELAY
WE
BK
SUPPRESSOR
SHORT
CYCLE
TIMER
THERMOSTAT
COMPRESSOR
GN
TO CUSTOMER'S
ALARM SYSTEM
TERMINAL BLOCK ON UNIT
BLR MTR
EVAPORATOR
BLR MTR
CONDENSER
S
R
C
O/L
RELAY
SHORT
CYCLE
PROTECTOR
OPTIONAL
CRANKCASE HEATER
CAP
CONDENSER
BLWR MTR
WE
BK
YR
PRESSURE
SWITCH
(OPTIONAL)
YR
PRESSURE
SWITCH
(OPTIONAL)
ON
0FF
SWITCH
ADDITIONAL OPTIONS
1) AIRFLOW SWITCH
2) COOLING EFFECT DETECTOR
NOTES:
1) ADDITIONAL OPTIONS ARE WIRED TO AN
INDIVIDUAL 3 POSITION TERMINAL BLOCK
SHOWN ABOVE.
2) 50Hz: CONTACT KOOLTRONIC
3) EXCESS PRESSURE DETECTOR
FOR KA4C1-4P24 ONLY
WD-176 REV. C
BK
ON/OFF
SWITCH
(FOR UL LISTED
UNITS ONLY)
HEATING
T-STAT
T-STAT
8
62
C
S
R
COMPRESSOR
PRESSURE
OPTIONAL
P24 SERIES
P28 & P36 SERIES, 2000-4000 BTU/H
WE
GN
LOW AIR FLOW DETECTOR
OPTIONAL
TO CUSTOMER
ALARM SYSTEM
TO CUSTOMER
ALARM SYSTEM
TO CUSTOMER
ALARM SYSTEM
{
TERMINAL
BLOCK
{
WE
BK
RED
SUPPRESSOR
CRANKCASE HEATER
THERMAL
B
R
Y
0
RELAY
4
O/L
13
SWITCH
CUTOUT
SHORT
CYCLE
TIMER
RB
1
YR
2
L
RELAY
EVAP
BLOWER
MOTOR
1
M
S
HEATER
RELAY
1
0
8
4
26
CAP
COND
BLOWER
MOTOR
CAP.
BK-N.0.
WE-COM
{
RD-N.C.
TERMINAL
BLOCK
TERMINAL
BLOCK
COOLING EFFECT DETECTOR
EXCESS PRESURE DETECTOR
h
COMMON
COMMON
YELLOW
BLUE
RED
BLUE
h
YELLOW
RED
RED TO YELLOW
CLOSES ON TEMP.
INCREASE
RED TO BLUE
OPENS ON TEMP.
INCREASE
RED TO BLUE
OPENS ON PRESS.
INCREASE
RED TO YELLOW
CLOSES ON PRESS.
INCREASE
P28 & P36 SERIES, 5000-7000 BTU/H
WD-208 REV. D
(Consult factory for 8000 BTU/H P36)
10
VIII. Maintenance
Kooltronic Water-Cooled Air Conditioners require no maintenance. Air-Cooled Air
Conditioners are designed to require only the routine cleaning of air filters to assure
unimpeded air flow through the condenser heat exchanger. It is not possible to
recommend specific filter cleaning intervals since the level and the nature of airborne
particulate matter differs widely with each installation.It is generally sufficient to remove
and wash the reusable aluminum mesh air filters when the outer surfaces of these filters
appear covered with a thin layer of dust or lint. Filter recoating adhesive is recommended.
Appropriate disposable filters are available from Kooltronic.
If filter service is neglected or delayed, the air conditioner will not perform at its design
capacity. The first indication of excessively clogged air filters is usually a gradual
increase of temperature within the equipment cabinet. If operation is continued under
these conditions, the compressor will be shut off by the thermal overload device. The
compressor will restart when its external temperature drops below the protector threshold
setting and the compressor will continue to cycle on and off.Continued operation under
these conditions will cause damage, shorten compressor life and void the warranty.
A. Filter Removal and Service
Kooltronic Air Conditioners feature an easily removable inlet filter to facilitate
necessary cleaning.
CAUTION
Do not operate the Air Conditioner for extended periods of time with the
filter removed.The condenser coil may become clogged with dust or
lint from the air entering the face. A clogged condenser coil is not
readily detected and will give the same reaction as a clogged filter. A
clean filter is the best protection.
1) Lift the filter, using the attached tab, to clear the lower filter retainer. Pull filter
toward you and downward until the top of the filter clears the upper filter retainer.
2) After removal, the filters should be flushed under warm running water with
the clean side up, driving contaminants out the dirty side of the filter.If the
accumulated dirt is oily, washing in a detergent bath is recommended, followed
by a warm water rinse as above.
3) The filters may be sprayed with Kooltronic A-16 Filter Recoating Adhesive to
trap fine airborne contaminants, or they may simply be dried and reinstalled as
strainer type filters.Recoating is recommended for best results.
4) Reinstall the filter: (a) keeping the tab at the bottom, slide filter into the upper
retainer, (b) press filter against the unit and (c) slide down into lower retainer.
11
B. Blowers
The design life of the blowers employed in all Kooltronic Air Conditioners is
substantially in excess of 20,000 hours.All Kooltronic condenser and evaporator
blowers are equipped with UL/CSA permanently-lubricated precision ball-bearing
motors, with automatic-reset thermal overload protectors.
If field replacement of a blower motor is necessary, most blower assemblies,
including mounting plate, are readily removable. Each of the blower mounting
plates is held to the air conditioner cabinet structure by screws and nuts. For
installation of the replacement blower, electrical connections may be broken at
the terminal block, or power leads may be cut and appropriately spliced together.
C. Compressor
All Kooltronic compressors are approved by UL and CSA, and require no
maintenance. They are hermetically sealed and charged at the factory, and
equipped with automatic-reset thermal overload protectors.
CAUTION
Before opening the Air Conditioner, disconnect all power.
If the compressor or the hot gas bypass valve fails, it is strongly recommended
that the Air Conditioner be returned to Kooltronic for service.
D. Refrigerant Loss
Kooltronic Air Conditioners are subjected to a series of tests to detect refrigerant
leaks, during and after manufacture.It is possible that shipping or other damage,
or microscopic leaks over a long period, may result in the need for replenishment
of refrigerant charge. When it has been verified by a qualified professional
that a refrigerant shortage does exist, the leak must be repaired. Then the
unit may be evacuated and recharged in the field by qualified service people only.
Refer to the data on the unit name plate which specifies the type of
E. Relocation
If your Kooltronic Air Conditioner has to be moved to another location by truck,
the following precautions should be taken:
n
De-mount Air Conditioner from equipment, controller or enclosure.
n
Conform to the applicable provisions of PROCEDURE FOR PROPER
PACKING AND SHIPMENT OF KOOLTRONIC AIR CONDITIONERS in
this manual under
CAUTION
refrigerant and the amount of charge in ounces.
Section III."PRODUCT HANDLING".
12
IX.Trouble-Shooting
Each Kooltronic Air Conditioner is engineered for performance and built for reliability.
They are designed to require no routine maintenance other than the cleaning of ambient
air filters. If your air conditioner should require service, we have compiled a
trouble-shooting chart to assist your service personnel. If additional assistance is
required contact Kooltronic at 609•466-3400.
Problem Cause Solution
Unit not Cooling No Power Check Power Source and
Electrical Connections
Loss of Refrigerant Locate and repair leak
Evaporator or Condenser Replace Motor, Capacitor or
Blower not operating entire Assembly
Filter clogged Clean or replace Filter
Clogged Evaporator or Clean Coil
Condenser Coil
Low Temperature Control Lower setting until unit starts
(Thermostat) improperly set
Low Temperature Control Replace Thermostat or Relay
(Thermostat) defective when applicable
Failed Compressor Replace Compressor
Ice on Evaporator Coil Insufficient Heat Load or Unit Contact Kooltronic
Oversized for Application
Failed Evaporator Blower Replace Evaporator Blower
Motor or Assembly
Clogged Evaporator Coil Clean Coil
Condensate draining Enclosure not properly sealed Check and seal all openings
continuously
Excessive opening of Enclosure Eliminate the frequency of
door opening
Excessive vibration Defective Motor in Blower Replace Motor
Defective Wheel in Blower Replace Wheel
Compressor Loose Tighten Mounting Bolts
Compressor Inoperative Low line Voltage Check Nameplate Voltage
against supply
Loss of Compressor Oil Replace Compressor
Loss of Refrigerant Locate and repair leak
Failed Compressor Capacitor Replace Capacitor
Thermal Overload Contact Kooltronic
Refrigerant or Oil leaks Crack or pin hole in tubing or Replace tubing or rebraze joint
Power interruptions Allow Compressor time to reset
brazed joint
13
X. Accessories
Air Cooled Water
Panel Mounted Cooled
Mini NP33 Horizontal
Accessories and Options HS P24 P47 NP36 Rack Top Panel
MM NM P28 P52 NP47 Mounted Mounted Mounted
SM NP17 P36 P59* NP59 (H & V) (HT) (WP)
Adapter Plate for Rack Mounting • N/A N/A N/A N/A N/A N/A N/A
Air Deflectors • • • • • • • N/A
Airflow Switch •
Compressor Heater • • • • • • • •
Condenser Access Panel N/A N/A N/A • N/A N/A N/A •
Condensate Evaporator Kit •
Cooling Effect Detector •
Deep Drain Pan Kit X N/A •
Excess Pressure Detector •
Filter Recoating Adhesive • • • • • • • N/A
Filters for replacement • • • • • • • N/A
Internal Corrosion Resistance • • • • • • • •
E
N/A •• •• • •
F
Std. ••Std. •
A
•••••••
A
••D••• • •
C
• N/A Std. Std. •
B
Std. •
Lifting Eyes N/A N/A •• •• • •
Low Airflow Detector •
Low Ambient Kit XX X • X
Low Temperature Control •
M/TAB** N/A Std.
Mounting Hinge • N/A
Rear Condenser Air Inlet Panel Std. Std.
Refrigerant Charging Kit • • • • • • • •
Short Cycle Protector •
E
N/A •• •• • •
A
Std. ••Std. •••
H
N/A N/A Std. N/A N/A N/A
J
A
•••••••
••N/A N/A N/A •
H
Std. • Std. N/A N/A N/A
K
X X N/A
Special External Paint Finishes • • • • • • • •
Special Line Cord or Connectors • • • • • • • •
Surge Suppressor • Std. ••Std. •••
Switchable Power (50/60Hz) • • • • • • • •
Unit Heaters X •
G
•• •• • •
Weather Protection Kit • • • • • • • N/A
• Available
* 18,000-22,000 BTU/H P59 accessories
and options same as NP59
** Mounting Template & Assembly
Bracket
X Not available due to design
configuration
CONDENSATE EVAPORATOR KIT: This device
attaches to bottom of Air Conditioner. Condensate is collected, vaporized and discharged to ambient.
COOLING EFFECT DETECTOR: A thermostat is
mounted inside the cabinet and attached to a sensor in
the warm air return. When the air temperature increases
to a set point, a signal is sent to a terminal block.
Requires user-installed wiring to a warning device.
EXCESS PRESSURE DETECTOR: Monitors head or
condensing pressure within the Air Conditioner. When the
pressure reaches an unsafe level a switch sends a signal
to the terminal block. Requires user-installed wiring to a
warning device.
A Micro-Mini has internal
space available for only one
of these options. All others
are mounted externally.
B Standard on H models
C Standard on P24
D Not available on P24 series
LOW TEMPERATURE CONTROL: Recommended in
situations of extremely low ambient temperatures and/or
low internal loads. At a pre-set return air temperature, the
Thermostat shuts down the unit, except for the
evaporator blower, for continuous cabinet air circulation.
SHORT CYCLE PROTECTOR: Protects the compressor
from damage due to harmful short cycling after a power
interruption. Protector keeps compressor off for 5 to 6
minutes before resumption of operation.
WEATHER PROTECTION KIT: For outdoor installations
subject to invasion by rain, snow or windblown dirt,
special deflectors shield the condenser air inlet and
outlet ports.
E N/A on Micro-Mini
F Standard on Super-Mini
G N/A on Narrow-Mini
H N/A on HS
J Available on NP17
K Available on NP59
14
XI. Standard Warranty
15
THIS WARRANTY CONSTITUTES THE ENTIRE WARRANTY WITH RESPECT TO THE PRODUCT AND IS IN
LIEU OF ALL OTHERS, EXPRESSED OR IMPLIED, INCLUDING ANY WARRANTY OF MERCHANTABILITY
AND WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE AND IN NO EVENT IS KOOLTRONIC
RESPONSIBLE FOR ANY CONSEQUENTIAL DAMAGES OF ANY NATURE WHATSOEVER.
RETURN AUTHORIZATION (RA) PROCEDURE
KOOLTRONIC products are warranted to be free of defects
in workmanship, materials and components. The following
warranty periods apply from date of shipment:
■
Air moving devices/components and hermetic system
components: One year
■
Non-operating parts, except filters: 5 years
The above warranty applies when the equipment is operated
under the following conditions:
■
Ambient temperature not in excess of 125°F (52°C) in
normal atmosphere or as stated on product nameplate
■
Voltage variation no greater than ± 10% from nameplate
rating
■
Frequency variation no greater than ±3Hz from nameplate
rating
■
Maximum cooling load no higher than air conditioner
nameplate rating
■
Waiting five minutes before restarting air conditioner after
intentional or accidental shutoff
■
Compliance to all other installation, maintenance and
operating instructions, as supplied
■
The purchaser assumes the responsibility of grounding
the unit and installing it in accordance with local electrical
and safety codes, as well as the National Electric Code
(NEC) and OSHA
KOOLTRONIC cannot assume responsibility for
mis-application of its products or the erroneous
selection of an inappropriate product by a nonauthorized KOOLTRONIC representative. Our
applications engineers will gladly assist in the
selection of the proper product, provided all
required details of the application are furnished.
■
All returns require a Return Authorization number whether
the return is for warranty or non-warranty repair, rotation of
stock, damage or any other reason. Returns without an RA
number will be refused.
■
Customer must call the KOOLTRONIC Customer Service
Department, Pennington, New Jersey (609 • 466 • 3400) to
obtain an RA number.
■
The following information is required when an RA is
requested:
- Original customer Purchase Order number and date
- Date product was received by customer
- Number of parts to be returned
- Product description, model and serial number
- Reason for return
- Action requested
- Contact name ,telephone, FAX numbersand e-mail address
■
Pack unit in a suitable container for shipment, preferably
the original packaging if available. All Air Conditioners
must be returned in an upright position properly secured to
a pallet. Improper packaging may void warranty claim.
If an Air Conditioner is received laying down or shipped via
UPS or similar service the warranty will be void.
■
Mark box prominently with KOOLTRONIC’s Return
Authorization Number.
■
Enclose all pertinent documents.
■
Freight charges on all products returned to KOOLTRONIC
shall be paid by the customer. Unauthorized collect shipments
will be refused.
■
If a unit is repaired under Warranty, KOOLTRONIC will pay
the freight charges both ways. Warranty repaired units will
be returned to customer at KOOLTRONIC expense only
within the Continental USA.
KOOLTRONIC assumes no liability beyond the repair or
replacement of its own product. This Warranty does not
cover:
■
Labor or reimbursement of labor for evaluation, removal,
installation, repair, or cost of any warranted part, unless
authorized in writing by KOOLTRONIC
■
Use of equipment for other than its designed purpose or
operating conditions
■
Operation in harsh, oily, corrosive or other abnormal
environmental conditions, without the proper filtration,
sealing, protective coatings and/or weather protection
■
Damage to hermetic system resulting from continuous
operation with dirty or clogged air filters or improper or
negligent maintenance
■
Use of refrigerant other than designated
■
Customer modification or abuse
■
Shipping damage or other accident (Claims for shipping
damage are the responsibility of the customer. Timely
claims must be filed by the customer with the freight carrier)
■
Cracked or broken hermetic tubing, brazed joints or other
internal damage cause d by sh ip pin g o r m ishandling
■
Damage caused by shipping units attached to an
enclosure
■
Any and all conditions resulting from noncompliance with
the preceding operating conditions
■
Returned freight must be paid by customer
■
This standard warranty does not apply to custom
products. Consult your KOOLTRONIC representative
for limitations
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