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X. Standard Warranty

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: 1 year 

Spare parts, except filters: 90 days

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 non-
authorized 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 KOOLTRONIC After Sale Kare (ASK),
Pennington, New Jersey (609 • 466 • 3400) to obtain an RA
number, or email [email protected].

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 numbers and 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 small parcel service the warranty will be void.

Mark carton 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 within the Continental USA
at KOOLTRONIC’s negotiated rates. Warranty repaired
units will be returned to customer at KOOLTRONIC expense
only within the Continental USA.

All authorized returns are subject to a restocking fee.

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 caused by shipping or mishandling

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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Summary of Contents for Guardian K2NA4C3DP24L

Page 1: ...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 900 039 85 12 21 CDR 20369 GUARDIAN...

Page 2: ...c model page of the Kooltronic website I Introduction Kooltronic Air Conditioners are designed to provide a cool dehumidified environment for your electronic components There are models to fit virtual...

Page 3: ...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...

Page 4: ...incorrect type or amount of refrigerant will adversely affect performance and may damage the unit r Make sure that these parameters are met Failure to do so may result in permanent damage to the unit...

Page 5: ...n discharged to the environment When the Kooltronic Air Conditioner is properly sized it should operate constantly and maintain 75 F to 115 F enclosure temperature depending on the ambient temperature...

Page 6: ...the new set point value push the SET key again or wait 10 seconds HOW TO CHANGE A PARAMETER VALUE To change a parameter s value operate as follows 1 Enter the Programming mode by pressing the SET plu...

Page 7: ...p code 7 0 65535 rEL Software release 0 rSE Real set point 0 onF on off key enabling ES PbC Kind of probe ntc Adr Serial address 1 1 247 HES Differential for energy saving 0 F 54 54 rrd Regulation res...

Page 8: ...ate the air conditioner for approximately ten 10 minutes During this period the evaporator fan should operate continuously and no unusual noise or vibration should be evident The condenser blower is c...

Page 9: ...10 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...

Page 10: ...2 8 42 213 8 1 24 31 5 9 65 245 1 1 00 25 4 2 14 54 4 6 50 165 1 6 90 175 2 4 28 108 7 1 10 27 9 1 03 26 1 8 312 7 9 DIA HOLES 1 2 MOUNTING PLAN Dimensions inches mm are for reference only and are su...

Page 11: ...4 244 8 1 04 26 4 12 00 304 8 1 55 39 4 4 26 108 2 POWER CORD 68 17 0 PROGRAMMABLE THERMOSTAT TEMPERATURE ALARM TERMINAL BLOCK Drawings and Dimensions con t Dimensions inches mm are for reference only...

Page 12: ...able Thermostat Six Foot 1 8m minimum 3 Wire Power Cord Stainless Steel Shell NEMA 4X models UL CUL Listed GuardianX NEMA 4X model offered with these additional features NEMA 4X Rating Maintained UL50...

Page 13: ...d operation under these conditions will cause damage shorten compressor life and void the warranty A Filter and condenser coil service The filter holder must be removed in order to clean the filters A...

Page 14: ...ine Voltage Check Nameplate Voltage against supply Voltage Compressor and Condenser Blower do not run Return temperature is Failed Compressor Check Compressor wire connections above set point plus dif...

Page 15: ...r Clean Coil difference between return and Coil clogged supply air is less than 10 F Evaporator Blower Condenser Loss of Refrigerant Locate and repair leak Blower and Compressor are running Ice on Eva...

Page 16: ...eceived by customer Number of parts to be returned Product description model and serial number Reason for return Action requested Contact name telephone FAX numbers and e mail address Pack unit in a s...

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