OCEANAIRE PWC60, PWC12, R410A Service Manual
POLARIS
Portable Water-Cooled Spot Cooler
ENGINEERING, INSTALLATION AND SERVICE MANUAL
PWC60
R410A Models
PWC12
TABLE OF CONENTS PAGE
GENERAL DESCRIPTION …................................. 1
PRODUCT DATA AND SPECIFICATIONS............ 2
UNIT DESCRIPTION
Standard Features.................................. 3
Applications / Operation.......................... 4
Electrical.................................................. 5
Use of Extension Cords.......................... 6
Accessories………................................... 7 - 12
Options.................................................... 13
Installation................................................ 14
Thermostat............................................... 15
Water Valve Adjustment.......................... 16
SERVICE
Replacement Parts Procedure................. 17
Troubleshooting Guide............................. 18
Preventive Maintenance........................... 19
DIAGRAMS
Unit Interior................................................ 20
Piping Schematic....................................... 21
Three Phase Monitor.................................. 22
Wiring Diagrams......................................... 23 - 27
FORWARD
This manual provides the user with basic details for the installation
and operation of the Oceanaire POLARIS spot cooler. It is recommended to read and fully understand the instructions outlined within
this manual, before operating the POLARIS unit.
As with all commercial air conditioning equipment, it is recommended
to have the POLARIS sized and installed by a licensed specifying
engineer and contractor, in accordance with all local and state codes.
The length of service received can be extended by following the
installation and preventive maintenance instructions.
NOTICE
In our ongoing process of continuous improvement, the items and
procedures described in this manual are subject to change without
notice. Please note model and serial number of the POLARIS unit
when contacting the factory
.
GENERAL DESCRIPTION
The Oceanaire POLARIS is a portable water-cooled air conditioner
designed for permanent or temporary spot cooling applications. The
entire air conditioning unit has been built in an attractive sheet metal
cabinet, equipped with heavy-duty casters for mobility. All POLARIS
models come with a 10-foot power cord for electrical connection and
added mobility in service. These spot-coolers are designed to direct
air to specific areas or objects through a discharge grill located on
the upper-front of the unit, while rejecting heat from the top of the
unit. The POLARIS models range in cooling capacities from 12,000
BTU/HR to 60,050 BTU/HR to satisfy most space cooling
requirements.
The POLARIS is a self-contained unit with the entire cooling system,
fan motors and electrical components 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
POLARIS unit to provide the desired level of comfort and cooling.
A wide variety of accessories and factory installed options are available for the POLARIS units allowing for improved performance and
versatility.
NOMENCLATURE
P WC 24 1 2
PORTABLE VOLTAGE
WATER-COOLED SINGLE PHASE
NOMINAL CAPACITY
CAPACITY RATING
NOMINAL CAPACITY 12..........12,000 BTU/HR
18..........18,000 BTU/HR
24..........24,00 BTU/HR
36..........36,000 BTU/HR
60……...60,000 BTU/HR
WARRANTY CARD
It is important that the warranty card be filled out completely and
returned to the factory within fourteen (14) days of installation of the
unit in order to receive the benefits of the warranty.
1
SPECIFICATIONS
WATER CONNECTIONS
For Model 12, C1 = WATER OUT, C2 = WATER IN
For Models 18, 24, 36 & 60, C1 = WATER IN, C2 = WATER OUT
1. Nominal capacity is total BTUH at 80ºDB/67ºWB return
air, high fan speed, with 85ºEWT to 95ºLWT (3 GPM per Ton)
2. CFM with free discharge
3. Sound Pressure, dB at 5 feet, co mmercial operation
4. 3/8” water valve on models 12, 18, 24 (with 3/8” flare fitting),
3/4” water valve on models 36, 60 (with 5/8” flare fitting)
5. Amps and Watts at 208 Volts
6. Time delay fuses/circuit breakers are recommended
Ambient operating range 65 º to 105º
May operate to 55º if equipped with optional hot gas bypass
(factory installed)
50 Hz MODELS AVAILABLE - CONSULT FACTORY
2
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 a soundabsorbing insulation for cool, quiet comfort. All units come equipped with handles and
swivel casters for portability and convenient set-up.
STANDARD FEATURES
ELECTRONIC THERMOSTAT
All POLARIS units are equipped with a non-programmable electronic thermostat. When
power is connected to the unit, the thermostat 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 continuously. To protect the compressor from shortcycling, there is a built-in, 4-minute time delay in the thermostat.
FAN SPEED CONTROL
A two position rocker switch, located next to the thermostat, provides the user with the
option of running the evaporator fan in high-speed or low-speed.
CONDENSATE PUMP
All POLARIS units come equipped with an Automatic Condensate Pump that disposes of
the condensate. The pump discharges through a 3/8 male falre connection located on
the back of the unit. The automatic pump is capable of a 20ft lift, to handle just about any
installation requirement.
CONDENSATE ALARM LIGHT
On the front of all POLARIS models, there is a Condensate Alarm Light (RED) located
near the thermostat. For models less than 5-tons, the light indicates that the condensate
tank is full and needs to be emptied. In the 5-ton POLARIS units (model PAC60) the light
indicates a condensate pump over-flow condition where the pump is either disabled, or
incapable of rejecting the condensate water, and must be serviced.
FILTERS
All POLARIS units are equipped with washable filters at the air intakes. 1/8” mesh air
filters located behind the evaporator return air grill serve to filter the air before it is cooled.
The filters can be easily removed and cleaned.
HIGH PRESSURE SAFETY SWITCH
Located on the back of the POLARIS 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 cut-out shuts down
the compressor, while the evaporator fan remains running. The compressor can be restarted, once the condensing pressure has lowered, by depressing the “RESET” button.
POWER CORDS
All POLARIS units come with power cords, convenient connection and portability. All
units except the 5-ton models, and 3-phase models are equipped with LCDI for added
safety devices.
3
APPLICATIONS
SPOT COOLER
The POLARIS can be used in an open environment to cool specific objects
or "spots". Spot Cooling is a convenient and economical way to provide air
conditioning where cooling the entire space is impractical. Cool air is
discharged from the unit and is directed where it is needed. Nozzle kits can
be used to improve direction of the cooling airflow.
ROOM AIR CONDITIONER
One feature of the POLARIS is it operates as a room air conditioner because
water is used as the means for heat rejection. The major convenience of
water-cooled air conditioning is the convenience of connecting water hoses
or lines as compared to the installation of condenser air ducts used for aircooled portables. A variety of hose kits are available that can be used for
connecting to a water supply and drain while providing portability within the
conditioned space.
POLARIS—OPERATION / DESCRIPTION
THERMOSTAT
WATER IN
FAN SPEED
SWITCH
DRAIN
WATER OUT
POLARIS—FRONT VIEW
4
EVAPORATOR
FAN DISCHARGE
“COOL”
GRILL
AND FILTER
RETURN
AIR
INLET
SERVICE CORD
All POLARIS Series units are equipped with the standard ten foot long service cord with
plug configurations and receptacle requirements as shown in this chart. PWC1011,
PWC1211, PWC1811, PWC2412 and PWC3612 units come with LCDI (Leakage Current
Detection & Interruption) devices that serve as a means of electrical protection.
CAUTION—DO NOT USE THE LCDI AS AN ON/OFF SWITCH FOR THE UNIT
All 3-phase models are equipped with locking plugs for added connection reliability. Refer to the chart below for plug and receptacle details for all POLARIS models.
A DAMAGED LCDI POWER SUPPLY CORD MUST BE REPLACED
WITH A NEW POWER SUPPLY CORD OBTAINED FROM
OCEANAIRE, AND NOT REPAIRED
UNIT/MODEL PLUG CONFIGURATION RECEPTACLE
115 VOLT
PWC1211
PWC1811
15A-125 VOLT
NEMA 5-15P
NEMA-5-15R
208-230 VOLT SINGLE PHASE
208-230 VOLT SINGLE PHASE
PWC2412
PWC3612
PWC6012
208-230 VOLT 3-PHASE
208-230 VOLT 3-PHASE
460 VOLT 3-PHASE
PWC3632
PWC6032
PWC3634
PWC6034
5
20A-250 VOLT
NEMA 6-20P
30A-250 VOLT
NEMA 6-30P
20A-250 VOLT
NEMA L15-20P
30A-250 VOLT
NEMA L15-30P
20A-460 VOLT
NEMA L16-20P
NEMA 6-20R
NEMA 6-50R
NEMA L15-20R
NEMA L15-30R
NEMA L16-20R
USE OF EXTENSION CORDS
CAUTION:
FOR MODEL PWC1211 AND PWC1811 AN EXTENSION CORD CAN BE
USED PROVIDED IT IS RATED AT LEAST 15 AMPS @ 115 VOLTS WITH
GROUNDING-TYPE ATTACHMENT PLUG AND GROUNDING TYPE
CONNECTOR (LOAD FITTING)
FOR MODELS PWC2412 AND PWC3612
USED PROVIDED IT IS RATED AT LEAST 20 AMPS @ 250 VOLTS WITH
GROUNDING-TYPE ATTACHMENT PLUG AND GROUNDING TYPE
CONNECTOR (LOAD FITTING)
FOR MODEL PWC6012
AN EXTENSION CORD CAN BE USED PRO-
VIDED IT IS RATED AT LEAST 30 AMPS @ 250 VOLTS WITH GROUNDING-TYPE ATTACHMENT PLUG AND GROUNDING TYPE CONNECTOR
(LOAD FITTING)
FOR MODEL PWC3632
AN EXTENSION CORD MAY BEUSED PRO-
VIDED IT IS RATED AT LEAST 20 AMPS @ 250 VOLTS, 3 PHASE
FOR MODEL PWC6032
AN EXTENSION CORD MAY BEUSED PRO-
VIDED IT IS RATED AT LEAST 30 AMPS @ 250 VOLTS, 3 PHASE
FOR MODELS PWC3634 AND PWC6034
USED PROVIDED IT IS RATED AT LEAST 20 AMPS @ 600 VOLTS, 3
PHASE
AN EXTENSION CORD CAN BE
AN EXTENSION CORD CAN BE
All three-phase AQUACOOLER models are equipped with a three-
phase monitor for added compressor protection. The phase monitor,
located in the control box, has multi-color LED that reports status.
The monitor protects the compressor from reverse operation, phase
loss and low voltage situations. Further description of the threephase monitor is located in the electrical section of the manual.
NOTICE - DO NOT OPERATE ANY THREE-PHASE UNIT BY BYPASSING THE MONITOR, THIS WILL VOID THE WARRANTY
SPECIAL NOTICE—THREE PHASE OPERATION
Models PWC3632, PWC3634, PWC6032 and PWC6034
6
ACCESSORIES
NK-1
NK-2
2NK-3
NK-3
DDA-6
DDA-10
2DDA-16
DDA-16
DEP-10
DEP-12
DEP-16
HK-1
HK-2
HK-3
HK-4
HK-5
HK-6
POLARIS UNIT
7
PWC – POLARIS ACCESSORIES
NOZZLE KIT
NK-1 (2 X 4-Inch) PWC12
NK-2 (2 X 6-Inch) PWC18, 24
2NK-3 (2 x 8-iNCH) PWC36
NK-3 (2 X 8-Inch) PWC60
EVAPORATOR RETURN AIR PLENUM
DEP-10 (10-Inch Round) PWC12
DEP-12 (12-Inch Round) PWC18, 24
DEP-16 (16-Inch Round) PWC36, 60
DISCHARGE DUCT ADAPTER
DDA-6 (6-Inch Round) PWC12
DDA-10 (10-Inch Round) PWC18, 24,
2DDA-16 (12-inch Round) PWC36
DDA-16 (16-Inch Round) PWC60
HOSE KIT
HK-1 10FT PWC 12, 18, 24
HK-2 25FT PWC 12, 18, 24
HK-5 40FT PWC 12, 18, 24
HK-3 10FT PWC 36, 60
HK-4 25FT PWC 36, 60
HK-6 40FT PWC 36, 60
8
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