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STANDARD FEATURES 

 

CABINET

    

The PWC-Series cabinet is constructed of 18 gauge steel with a gray 

polyester powder coated finish that will compliment any decor. The entire cabinet is 

insulated with sound- absorbing insulation for cool, quiet comfort.  All units come 

equipped with handles and swivel casters for portability and convenient set-up. 

 

 

ELECTRONIC THERMOSTAT   

All PWC units are equipped with a non-

programmable electronic thermostat.  When power is connected to the unit, the thermo-

stat will control the unit to cool a space to the desired temperature.  The thermostat is 

also capable of controlling the fan to operate automatically (when needed) or continuous-

ly.  To protect the compressor from short-cycling, there is a built-in time delay in the 

thermostat.  In the event of a power outage, all thermostat settings are saved, and the unit 

will re-start automatically. 

 

 

FAN SPEED CONTROL   

A two position rocker switch, located near the thermostat, 

provides the user with the option of running the evaporator fan at high-speed or  

low-speed. 

 

 

CONDENSATE PUMP   

All PWC units come equipped with an Automatic Condensate 

Pump that removes the condensate.  The pump discharges through a check valve located 

on top of the condensate pump assembly. The vinyl tubing exits through a 3/8” male flare 

fitting, located in the recessed area of the unit. The pump has capabilities up to a 20’ lift, 

to handle almost any installation requirement.  If a failure occurs with the operation of 

the pump circuit, the 

NC overflow switch

 will open, and the CONDENSATE ALARM warn-

ing light will energize. When the failure has been corrected, or the condensate line block-

age/kink has been resolved, the alarm light will clear, and the unit will restart. 

 

CONDENSATE ALARM LIGHT    

On the front of all PWC models, there is a Conden-

sate Alarm Light (RED) located near the thermostat.  The light indicates a condensate 
pump over-flow condition where the pump is either disabled, or incapable of removing 
the condensate water, and must be serviced. 

FILTERS

   

All PWC units are equipped with a washable filter at the air intake. An elec-

trostatic mesh air filter is located behind the evaporator return air grille to filter the air 
before it is cooled, keeping the coil free from debris.  The filter can be easily removed and 
cleaned. 

 

HIGH PRESSURE SAFETY SWITCH

   

Located near the hose fittings of the PWC 

unit is a manual re-set high pressure switch, used for the protection of the compressor in 

the event that the condenser water supply is turned off.  If the condensing pressure 

exceeds the limit setting, the switch cycles off  the compressor, while the evaporator fan 

continues to operate. Once the water interruption has been corrected, turn the unit off, 

RESET THE RED BUTTON

 by pushing down on the rubber boot in the recessed area of the 

unit, listening for the click, and restart the unit. 

 

POWER CORDS   

All PWC units come with power cords, convenient connection and 

portability.  All models, except for the 3-phase and 5-ton units, are equipped with LCDI for 

added safety devices.  

Summary of Contents for PWC Series

Page 1: ...ENGINEERING INSTALLATION AND SERVICE MANUAL PWC series Portable Water Cooled Spot Cooler EISM PWC 10012021...

Page 2: ...g process of continuous improvement the items and procedures de scribed in this manual are subject to change without notice Please note model and serial number of the PWC unit when contacting the fact...

Page 3: ...neatly arranged in a gray polyester powder coated metal cabinet When connected to the proper source of electrical power a 24 volt thermostat controls the PWC unit to provide the desired level of comfo...

Page 4: ...ER VALVE CONNECTION DRAIN RETURN CONNECTION CONDENSATE PUMP ALL UNITS R 410A CHARGE oz 14 18 20 HEIGHT in 33 8 WIDTH in 20 1 DEPTH in 13 1 NET WEIGHT lb 125 155 170 310 410 PWCSPECS10012021 44 8 16 0...

Page 5: ...uirement If a failure occurs with the operation of the pump circuit the NC overflow switch will open and the CONDENSATE ALARM warn ing light will energize When the failure has been corrected or the co...

Page 6: ...where it is needed Nozzle kits can be used to improve direction of the cooling airflow ROOM AIR CONDITIONER One feature of the PWC is it operates as a room air conditioner because water is used as th...

Page 7: ...reliabil ity Refer to the chart below for plug and receptacle details for all PWC models A DAMAGED POWER SUPPLY CORD MUST BE REPLACED WITH A NEW POWER SUPPLY CORD OBTAINED FROM OCEANAIRE AND NOT REPAI...

Page 8: ...CAN BE USED PROVIDED IT IS RATED AT LEAST 20 AMPS 250 VOLTS 3 PHASE FOR MODEL PWC6032 AN EXTENSION CORD CAN BE USED PROVIDED IT IS RATED AT LEAST 30 AMPS 250 VOLTS 3 PHASE FOR MODELS PWC3634 AND PWC6...

Page 9: ...12 2DEP 12 12 Inch Round PWC18 24 DEP 16 16 Inch Round PWC36 60 DISCHARGE DUCT ADAPTER DDA 6 6 Inch Round PWC12 2DDA 10 10 Inch Round PWC18 24 2DDA 16 16 inch Round PWC36 PWC60 HOSE KIT HK 1 10FT PWC...

Page 10: ...iameter nozzles with an approximate compressed length of 15 inches The approximate extended length is 21 inches 2NK 2 for models PWC18 PWC24 with 2 6 inch diameter nozzles with an approximate compress...

Page 11: ...ration and application information DEP 10 for PWC12 transitions the return air opening to a 10 inch round duct 2DEP 12 for PWC18 and PWC24 transitions the return opening to a 12 inch round duct DEP 16...

Page 12: ...nd PWC24 converts the evaporator discharge to a 10 inch diameter round duct 2DDA 16 for PWC36 and PWC60 converts the evaporator discharge to a 16 inch diameter round duct When used in conjunction with...

Page 13: ...s have FEMALE flare connectors to match the MALE flare fittings on the units see chart below The WATER IN connector consists of a garden hose connection WATER OUT and DRAIN condensate have no fittings...

Page 14: ...igned for use with up to 350 psig water inlet pressure are available HERESITE TREATED EVAPORATOR COIL For use in chemically corrosive environments the PWC can be manufactured with a Heresite dipped ev...

Page 15: ...proper NEMA receptacles refer to Electrical service plug configuration When using extension cords use the proper gauge cord and check cord voltage to the unit TIME DELAY FUSES CIRCUIT BREAKERS ARE REC...

Page 16: ...conds Then it will return to display the room temperature After the delay has timed out the fan motor and compressor will start beginning the cooling cycle Remember the set point must be lower than th...

Page 17: ...ater supply line In these cases it is recommended that the water valve be adjusted 1 Disconnect the unit power 2 Remove water valve cover plate or back panel depending on model to locate the water val...

Page 18: ...Alert Light Return Air Grille Evaporator Filter Front Locking Casters Compressor Run Capacitor High Pressure Switch Metal Strain Relief Water Connections Recessed Cubby Rear Swivel Casters Evaporator...

Page 19: ...ear the top of the casing for temperature sensing is not bent or damaged 2 To remove the thermostat sub base remove the 2 mounting screws and the 4 wires black red white green Make sure the 4 wires do...

Page 20: ...mostat set point is too high REMEDY Make sure set point is lower than room temperature Note there is a time delay for the compressor CAUSE Thermostat Loose thermostat wires REMEDY Examine the thermost...

Page 21: ...he High Pressure Cut Out will shut down the compressor Wait 15 minutes depress the HI PRESSURE RESET and repeat this process until ALL of the water is out of the system When com pleted depress the HIG...

Page 22: ...e return air grille and can be easily removed and cleaned The filter must be washed periodically as needed by placing it in a dishwasher or soaking in a solution of warm water and detergent for 10 min...

Page 23: ...21 PIPING SCHEMATIC...

Page 24: ...22 WIRING SCHEMATIC FOR PWC1211 PWC1811 PWC2412 and PWC3612...

Page 25: ...23 WIRING SCHEMATIC FOR PWC6012 07182016...

Page 26: ...THREE PHASE MONITOR 24...

Page 27: ...25 WIRING SCHEMATIC FOR PWC3632...

Page 28: ...26 WIRING SCHEMATIC FOR PWC6032...

Page 29: ...27 WIRING SCHEMATIC FOR PWC3634 and PWC6034...

Page 30: ...ten instructions or has been altered or modified in any way b Product that has been subjected to any abnormal power conditions such as loss of power power surges voltage irregularities such as brown o...

Page 31: ...TECH NOTES 29...

Page 32: ...____________________________ Purchased from _______________________________ Date Installed _________________________________ For Technical Support or service parts contact our Keep Cool Team at 847 58...

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