Whale Gusher® 10 MK3 Pump
Models: BP3708 and BP3740
READ CAREFULLY BEFORE INSTALLATION AND USE
To the Fitter: Check that the product is suitable for the
intended application, follow installation instructions and ensure
operating instructions are passed on to the end user.
To the User: Read the instructions carefully. (See parts
diagram)
APPLICATION
This bilge pump is designed exhaust standing water. Output
capacity depends on installation conditions and pumping rate.
Users should be aware that capacity may not be sufficient to
cope with rapid influx of water.
If it is intended for any other purpose or with any other liquid, it
is the users responsibility to ensure that the pump is suitable
for the intended use and, in particular, that the materials are
fully compatible with the liquids to be used. With all applica-
tions it is important that a system of safe working practice is
applied to installation, use and maintenance.
INSTALLATION
The Gusher 10 is designed for mounting on or through deck, or
on or through bulkhead. The handle can be fixed in four
different positions relative to the inlet and outlet (see Fig. 1)
Fig. 1 - Mounting arrangements for a standard model
To Reposition Handle::
(a) Slacken wormdrive clip and remove diaphragm
(b) Undo the bolts from bracket and rotate body to new
position relative to the fork and diaphragm. Note: Inlet and
outlet are always at 180 to each other
(c) Reassemble bolts, washers and securing brushes in
bracket and tighten
Select a suitable position free from
obstructions where the pump can be
operated efficiently and comfortably
Avoid installations which require a
cockpit locker to be opened in order to
operate the pump.
To minimise pumping effort, site the
pump halfway (in height) between the
strumbox / strainer and hull outlet
To ensure good priming and flow, avoid sharp bends in
pipework and fit a Whale strumbox/strainer (incorporating a
non-return valve) which prevents the end of the hose sucking
against a flat surface and allows the water level to be reduced
to a minimum.
Ensure that the pump is installed to allow easy access for
servicing.
For Mounting On Deck/Bulkhead:
1. Use pump as a template, mark off and drill four 1/4”
(6mm) holes.
2. Check flow direction and secure the
pump with 1/4” (6mm) bolts.
3. Attach 1 1/2” (38mm) smooth bore
reinforced hose with stainless steel
worm drive hose clips. Tighten to
prevent air leaks
4. With thru-hull discharge, make sure
that the discharge point is well
above the water line.
5. Check the installation for air leaks, correct priming and
discharge
For Mounting Underdeck or Thru Deck/Bulkhead
Three deckplates available - see accessories
1. Using template mark off the 6 holes for the mounting and
cut out the hole for the pump handle. Round off top edge
of large hole as shown in fig. 3.
Deck fitting for Gusher Pumps (Half sectional elevation
of deck fitting, pump and bracket)
2. Minimum deck thickness required is 1/4” (6mm). For
thinner decks use a backing plate of suitable thickness
so that the backing plate plus the deck is at least the
minimum thickness and no greater than 1” (25mm).
Bond the backing plate to the deck. If using Deck plate
DP3804 the minimum deck thickness is 1/2” (13mm)
3. Position the pump under deck and check flow direction.
Work the rubber gaiter up through the hole until its flange
rests on the deck. Secure the 6 1/4” (6mm) countersunk
mounting screws provided.
4. As points 3 - 5 of previous instructions.
Fig 2
Fig 3
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