Univex 4505-1, 4505MP1, 4505-7 installation instructions Required Materials, Optional Materials

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Sahara Series Automatic

Bilge Pumps

4505 / 4507 / 4511 Installation Instructions

SAVE THESE INSTRUCTIONS

Form Number 69370 Rev. C 03-10

This product carries the standard Attwood three-year warranty.

See www.attwoodmarine.com or Product Catalog for details.

CAUTION:

Read all instructions carefully before installing and using this product.

This pump is sealed and, therefore, submersible. However, the electrical wire connections must not be submerged. For extra protection, coat the butt joints and adjacent wire ends liberally with liquid electrical tape such as MDR¨ or Starbrite¨.

Specifications

			ABYC Specifications			ISO Specifications
			13.6-volts DC				12.0-volts DC
			(GPH=Gallons Per Hour)			(LPH=Liters Per Hour)
			0 ft.	3.3 ft.	6.7 ft.	10kPa	20kPa
			Head	Head	Head	Head	Head	Max Head
Part		Amp	GPH/	GPH/	GPH/	LPH/	LPH/	(ft.@13.6v/
Num.	Model	Fuse	amps	amps	amps	amps	amps	kPa@12v)
4505	S500	2.0	500/1.5	350/1.4	200/1.4	1136/1.2	598/1.2	9'/24
4507	S750	5.0	750/3.0	625/2.8	450/2.8	1817/2.5	1306/2.5	16'/36
4511	S1100	6.0	1100/4.0	970/3.8	750/3.8	3104/3.3	2328/3.3	11'7"/28

WARNING: To prevent injury, always disconnect the power source when installing or servicing any electrical product.

DO NOT use pump to remove gasoline, oil or other flammable liquids.

Always use the fuse amperage rating specified for your pump model. Failure to do so could result in serious personal injury or fire hazards.

Attwood bilge pumps are designed to exhaust STANDING WATER ONLY. They are not intended to prevent rapid accumulation of on-board water due to rough weather, hull damage, and/or other unsafe navigational conditions.

REQUIRED MATERIALS

¥Hose and thru-hull fittings, available separately from Attwood:

Sahara Model 4505 and 4507–

3/4" I.D. hose: Attwood No. 4199 (includes 2 clamps)

3/4" I.D. thru-hull: No. 3873 (straight), No. 66541 or 66547 (stainless steel straight), No. 3877 (90°), or No. 3878 (double-end)

Sahara Model 4511–

1-1/8" I.D. hose: No. 11551 (clamps not included)

1-1/8" I.D. thru-hull: No. 3874 (white), No. 3874A (black) or No. 66543, 66549 (stainless steel), or No. 3879 (90°)

¥Two (2) hose clamps suitable for (3/4" or 1-1/8") hose.

¥AUTO/OFF/MANUAL dash-mounted control switch (Attwood No. 7615A).

¥In-line fuse connector (Attwood No. 14341) and appropriate size fuse.

¥Three (3) stainless steel #6 x 1/2" self-tapping screws, round or pan head. Use a #32 drill bit for pilot holes.

¥Four (4) wire butt-connectors for 16-gauge wire.

¥Two (2) insulated spade terminal connectors for 16-gauge wire.

¥Suitable means to make electrical connections waterproof.

¥Cordless drill.

¥Screwdriver.

OPTIONAL MATERIALS

¥1/2"-thick marine plywood block (slightly larger than pump base).

¥Waterproof adhesive (epoxy, silicone adhesive, or fiberglass resin) to mount block.

¥16-gauge wire (brown and black).

PUMP MOUNTING INSTRUCTIONS

WARNING: Remove the pump mounting base (See Figure 3). Remove the foam block that supports the float during shipping. Failure to do this prevents the pump from starting when water

is present.

1.Make sure the hull thickness is at least 1/2" thick. If not, place a block of 1/2" marine plywood (slightly larger than pump base) in the lowest part of the bilge. Be sure that the pump cover can be removed for cleaning in this position. Glue the plywood to the hull with a waterproof adhesive (epoxy, silicone adhesive, or fiberglass resin). See Figure 1.

Figure 1

Float End	Pump Outlet	Transom
Of Pump	Pointing To Transom
Toward Bow
		Level
1/2" Thick		Parallel To
		Bottom Of Boat
Mounting Block

2.Position the pump in the lowest part of the bilge on a flat, level surface (on the plywood block if it has been installed) with the outlet pointing toward the transom.

3.Be sure outlet nozzle is level. If pointed upward or downward, an airlock may form in the pump. (See Figure 1.)

4.The float end of the pump must be level with or above the pump end (See Figure 1). This prevents the pump from running out of water while the float is still high enough to activate the pump.

5.Mark location of the three (3) mounting holes with a pencil or scribe.

WARNING: When drilling holes do not drill through the hull!

6.Carefully drill two 1/8" diameter pilot holes in marked area and drive a screw in each hole.

7.Slide hose clamps (one to clamp hose to the pump, the other for the thru-hull connector) over end of the hose. Force hose over the discharge nozzle of the pump. Install clamp.

8.Route hose on an upward incline to the thru-hull connector. Avoid dips in hose that can trap water and airlock the pump. Avoid putting excess tension on hose, which can damage the pump outlet.

9.Force the hose over the thru-hull barbs and clamp into place.

THRU-HULL CONNECTOR INSTRUCTIONS

If no thru-hull connector exists, choose a location for the fitting.

1.Position thru-hull fittings at least 12" above the water line to prevent water from coming back into the hull. On sailboats, mount the thru-hull high enough on the center of the transom to be above the water line at all times.

2.Place fitting, if possible, on the same side as the steering wheel so the driver can see discharge of water when the pump is working properly.

3.Drill hole to match outside diameter of the thru-hull connector thread.

4.Place a small bead of suitable marine sealant around inside of the thru-hull connector flange.