For best results when printing this document, choose LANDSCAPE formatting from your Print Set-Up Options.

Sea Water Pumps

FEATURES ---------------
  • Pumps are centrifugal type, providing longevity, quiet operation and minimum maintenance.
  • AC Motors are ignition protected with built-in thermal overload protection.
  • Pump wetted components are constructed of high quality, non-corrosive materials.
  • Most pump heads are easily rotated, allowing proper application, maintenance and service.
  • All threaded intake and discharge ports are U.S. standard taper pipe thread (NPT).
  • Each pump is supplied with a vibration isolated mounting bracket, intake and discharge hose fittings and electrical connections.
  • All units meet or exceed applicable ABYC and U.S. Coast Guard regulations, CE Directives and general Air Conditioning and Refrigeration industry (ARI) standards.
Main Image
SPECIFICATIONS
Model* Volts Hz** Phase Amps Pump Head
Ft. H2O ****		 Gallons
Per Minute		 Capacity***
BTU/Hr		 Pump Connections
Intake / Discharge		 Overall Dimensions
H x W x L		 Net Weight
(lbs/kg)
PC-400 115
230		 50/60
50/60		 1
1		 1.5
0.9		 9 3 12,000 1/2" MPT/ 3/8" MPT 3.75" x 3.75" x 4.75"
9.5cm x 9.5 cm x 12.1cm		 4.8/2.2
P-400 115
230		 50/60
50/60		 1
1		 1.1
0.7		 9 3 12,000 3/4" FPT / 3/8" MPT 4.25" x 4.74" x 6.25"
10.8cm x 10.8cm x 15.9cm		 4.5/2.0
PC-500 115
230		 50/60
50/60		 1
1		 2.5
1.3		 10 6 24,000 3/4" MPT/ 1/2" MPT 4.25" x 4.25" x 6.25"
10.8cm x 10.8cm x 15.9cm		 8.8/4.0
P-500 115
230
230		 60
60
50		 1
1
1		 2.0
1.0
0.8		 12 6 24,000 3/4" FPT / 1/2" MPT 4.75" x 5.75" x 7.5"
12.1cm x 14.6cm x 19.1cm		 8.5/3.9
P-510 115
230
230		 50/60
60
50		 1
1
1		 2.4
1.2
0.9		 9 7.5 30,000 3/4" FPT / 1/2" MPT 4.50" x 4.25" 10.0"
11.4cm x 10.8cm x 25.4cm		 8.2/3.7
P-310 115
230		 50/60
50/60		 1
1		 2.1
1.0		 13 12 48,000 1" FPT / 1/2" MPT
1" FPT / 5/8" MPT		 6.25" x 4.5" x 9.0"
15.9cm x 11.4cm x 22.9cm		 8.3/3.7
P-100 115
230
115
230
230		 60
60
50/60
50/60
50/60		 1
1
1
1
3		 7.2
3.6
7.2
3.6
2.8		 13 15 60,480 1 1/4" FPT / 1" FPT 8.5" x 7.5" 13.0"
21.6cm x 19.1cm x 33.0cm		 24.5/11.1



30.5/13.8
P-110 115
230
230		 50/60
50/60
50/60		 1
1
3		 7.2
3.6
2.8		 17 18 72,000 1-1/4" FPT / 1" FPT 8.5" x 7.5" x 13.0"
21.6cm x 19.1cm x 33.0cm		 24.5/11.1
P-120 115
230
230		 60
50/60
50/60		 1
1
3		 4.9
3.5
2.8		 18 21 84,000 1-1/4" FPT / 1" FPT 8.5" x 7.5" x 13.0"
21.6cm x 19.1cm x 34.3cm		 24.5/11.1
P-700 115
230
230		 50/60
50/60
50/60		 1
1
3		 7.2
3.6
2.8		 27 32 129,600 1-1/4" FPT / 1" FPT 8.5" x 7.5" x 13.0"
20.8cm x 19.1cm x 34.4cm		 26.0/11.8,/i>
P-710 115
230
230		 50/60
50/60
50/60		 1
1
3		 9.8
4.9
2.2		 23 40 172,800 1-1/2" FPT / 1-1/2" FPT 9.75" x 7.5" x 14.75"
24.8cm x 19.1cm x 37.5cm		 34.0/15.4
P-711 115
230
230		 50/60
50/60
50/60		 1
1
3		 16.0
8.0
4.2		 42 54 216,000 1-1/2" FPT / 1-1/2" FPT 9.75" x 7.5" x 14.75"
24.8cm x 19.1cm x 37.5cm		 37.4/16.9
P-715 115
230
230		 50/60
50/60
50/60		 1
1
3		 20.0
10.0
6.0		 45 75 300,000 2-1/2" FPT / 2-1/2" FPT 9.75" x 9.25" x 19.87"
24.8cm x 23.5cm x 50.5cm		 110/49.7
P-800 12 DC -- 1 7 2 6,000 3/8" FPT / 3/8" OD 3.75" x 2.81" x 5.13"
9.5cm x 7.1cm x 13.0cm		 1.2/0.5
P-900 12
24		 DC
DC		 --
--		 3.8
1.9		 9 3 12,000 1/2" FPT / 1/2" MPT 4.5" x 3.5" x 9.0"
11.4cm x 8.9cm x 22.9cm		 4.5/2.0
P-900 12
24		 DC
DC		 --
--		 3.8
1.9		 9 3 12,000 1/2" FPT / 1/2" MPT 4.5" x 3.5" x 9.0"
11.4cm x 8.9cm x 22.9cm		 4.5/2.0
P-1010 12
24
32		 DC
DC
DC		 --
--
--		 6.9
3.5,
2.6		 9 3 12,000 3/4" FPT / 1/2" FPT 3.5" x 4.1" x 8.5"
8.9cm x 10.4cm x 21.6cm		 5.6/2.5

* Add a 'Z' to the model number to indicate 230 volts.
** Capacities given are rated at 60 Hz operation except for 50Hz only motors). 50Hz operation reduces 60Hz Gallons Per Minute (GPM) by 17%.
*** Capacities given are determined using an average of 3 GPM per ton (12,000 BTUs) at given GPM and head. If the capacity of your air conditioning system is greater than or equal to
48,000 BTU/hr. the sea water pump is most likely air cooled and will need occasional oiling. Se manufacturer's labeling on the pump for maintenance instructions.
****Head required for system is dependent on units(s), length of hose, use of 90 degree elbows, and the height of the unit above the pump.

Please refer to MAS pump sizing application guide or consult your MAS application engineer.
Installation Guidelines for Sea Water Pumps
When choosing the proper model Sea Water Pump, primary consideration should be given to the BTU capacity of the condensing unit(s) and the available power supply.
All centrifugal pumps must be located as far below the water line, and as close to the center line as possible. this prevents exposure above the water line when the vessel is on the plane or operating in heavy seas. Install the pump as close as possible to the sea water strainer and thru-hull fitting. Mount the pump securely in a horizontal position with the discharge higher than the intake. Rotate pump head towards the direction of water flow. All of the above helps to prevent any air locks that can cause the pump to cease proper operation and cause premature damage to the components.
The entire sea water system should be plumbed on a continuous uphill incline from the thru-hull intake to the condenser coil inlet.
Locate the overboard discharge above the water line and connect it to the condenser coil outlet. ?The unit condenser coil should be the high point of the application, thus eliminating a place to trap air and maintaining a self-purging system.
The thru-hull fitting should have a calm shell type scoop, facing forward, to help maintain a constant water flow to the pump. the thru-hull fitting and sea water strainer must be equal in size to the intake opening of the pump. Restriction of flow capacity to the pump intake can result in damage to the pump components.
 the thru-hull fitting should be dedicated to the system and not shared with other components or systems. The sea water strainer should be of adequate size and should be located in an accessible area for maintenance (cleaning).
A shut-off valve (ball-type is recommended) must be installed between the thru-hull and strainer to provide a means to service any component below the water line.
All sea water components should be assembled using properly sized flexible reinforced hose to provide vibration isolation. Securely fasten each hose run, making sure no kinks or loops exist. Avoid or minimize 90° elbow fittings to ensure maximum water flow. All hose connections must be double-clamped, reversing the clamps, above the water line as well as below it.
When installing multiple units, a single pump is recommended. Size the pump to the equivalent foot of head and the total BTU load of all units combined. The discharge of the pump is to be connected to a manifold for proper distribution of water flow to each individual unit. For independent control of the sea water pump from each unit, use a pump relay panel.
Install Image

In the interest of product improvement, Marine Air Systems' specifications and design as outlined herein are subject to change without prior notice.


Home | Self Contained | Central Systems | Manuals
 Chilled Water | Refrigeration | Accessories