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7

VII. Maintenance

In general, very little maintenance or repair is required on Water-to-Air Heat
Exchangers.

Blowers - Removable for Repair or Replacement

In Water-to-Air Heat Exchangers, powerful blowers are used. Each is carefully chosen
to provide optimum airflow characteristics for component cooling as well as heat 
transfer within the unit.

Each of these air moving devices has been engineered and constructed to provide
years of trouble-free operation and thus require no periodic maintenance.

In the case of air mover failure, blowers are easily removable with simple tools.

Replacement blower assemblies and motors are generally readily available from
Kooltronic stock.

Please see the listing of Major Component Replacements earlier in this manual.

VIII. Packing Procedure

Keep Heat Exchanger in proper upright position.

Pack Heat Exchanger in an appropriate carton (preferably original carton if possible),
with adequate internal protective packaging, making sure carton is marked properly.

For local controlled transportation, strap carton where possible, to a secure part of
truck to prevent falling or sliding, minimizing vibration, etc.

For common carrier shipment, band unit(s) securely to a pallet. Unpalletized shipment
risks severe damage which voids the warranty.

CAUTION

Disconnect electric power from the Heat Exchanger before

servicing unit.

CAUTION

Do not handle or carry the blower by inserting fingers into the

blower opening where wheels are located.  This could cause a

wheel misalignment problem and create an out-of-balance

condition.  Also, the sharp vanes could result in injury.

Summary of Contents for KNHE28 Series

Page 1: ...AT EXCHANGER 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 900 046 15 7 20 CDR 20272 Find additional information on this model at kooltronic com or use the Technical Documents QR code below Technical Documents ...

Page 2: ... Introduction Kooltronic Heat Exchangers are designed to provide a cool environment for your electronic or electrical components There are models to fit virtually all sizes and shapes of electrical or electronic enclosures 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 fo...

Page 3: ...er until you read and thoroughly understand this Manual Before operating this unit all electrical wiring must be checked to assure the proper connections IV Product Identification and Nameplate Each Kooltronic Heat Exchanger includes an identification nameplate This nameplate provides CAUTION Operate this unit only on the proper voltages and frequencies as noted on the nameplate Model Number Seria...

Page 4: ...anger with options Automatic Water Flow Control and Heater is shown on Figure 2 Heated Air Blower Water with Heat Load Cold Water Heat Exchanger Cabinet Cooled Air WATER TO AIR A Water to Air Heat Exchanger works by transferring heat of internal air to circulating water resulting in chilled air which is recirculated throughout the electronics or electrical cabinet The Adjustable Water Control Ther...

Page 5: ...crews nuts washers 6 Attach overflow drain hose supplied to the drain exit at the bottom of the unit This hose must not be elevated above the exit port Improper mounting may impede the flow of condensate and may cause internal malfunctions 7 Attach supply line to 3 8 O D copper tubing Inlet on the side of unit 8 Attach discharge line to 3 8 O D copper tubing Outlet on the side of unit Mounting Pla...

Page 6: ...AT AIR FLOW SWITCH BLOCK TERM TSTAT CONT OPTIONS Wiring Diagram WD 394 NOTE Part Numbers shown are for 60Hz 1Ø For 50Hz consult Kooltronic Technical Data 60 Hz operation For 50 Hz operation consult Kooltronic Model Volts Power Amps Watts Maximum Inlet Water Temp ºF ºC Performance Watts ºF Watts ºC 1 GPM 2 GPM BTU H Watts 95ºF 35ºC Enclosure Air Temp 50ºF 10ºC Inlet Water Temp 1 GPM 2 GPM Approx We...

Page 7: ...ing of Major Component Replacements earlier in this manual VIII Packing Procedure Keep Heat Exchanger in proper upright position Pack Heat Exchanger in an appropriate carton preferably original carton if possible with adequate internal protective packaging making sure carton is marked properly For local controlled transportation strap carton where possible to a secure part of truck to prevent fall...

Page 8: ...s 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 Heat Exchangers must be returned in an upright position properly secured to a pallet Improper packaging may void wa...

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