110130.01
5
Electric diaphragm pump EMP134
ENGLISH
Piping
For piping diagrams see page 14.
For the piping use internally reinforced hose with an inside
diameter of 38 mm (1 1/2’’). Non-reinforced hose will easily
kink or possibly even become ‘strangled’ when used at the inlet
side.
Keep the length of the hoses, especially near the pump, of suf-
ficient length, so that both the pump and the suction hose can
be brought above the fluid level in the tank.
Avoid sharp bends in the hoses.
Mount all connections with a good quality type of hose clamps
and use 2 per connection; each leakage will result in an
unpleasant odour!
To prevent an unpleasant odour the through-hull fitting must be
positioned
below the waterline
.
Always
fit a seacock on top of
any through-hull fitting wich is positioned below the water line.
Installation of a U-bend with air vent (or vent line) in the outlet
hose is necessay if (at any angle of heel):
- the level of the fluid to be pumped is below the waterline
- the outlet through-hull fitting is installed below the waterline
Such installation prevents siphoning.
Interchanging the inlet and outlet valve is not possible !
Changing the flow direction, compared to the position of the
mounting base, is only possible by re-installation of the pump
housing to the bell housing in the other position.
Electrical installation
Make sure that the voltage stamped on the electric motor is
identical as the ship’s power supply voltage.
The minimum cross-section for the connecting cables is
2.5-mm
2
(AWG 14). The voltage drop between the battery and
the pump should not exceed 10% of the supply voltage. For a
12 Volt installation with a total cable length (positive and nega-
tive wiring added together) of more than 19 m use cable with a
cross-section of 4 mm
2
. (or more than 50 ft: use AWG 12).
Connect the power supply as shown in the wiring diagram. See
drawing at page 15.
A main switch* and a fuse** must be incorporated in the posi-
tive cable.
*)
The switch must be rated for 10 Amps.
**) Fuse:
6 Amps for 12 Volt system
4 Amps for 24 Volt system
WARNING
The electric motor may become hot when used for a
longer periode of time! Make sure that electric wiring etc.
does
not
get in contact with the motor housing.
Maintenance
Always flush a holding tank connected to the electric diaphragm
pump after discharge. Pump the flush water away by switching
on the pump; remaining contaminants in pump and hoses will
also be flushed.
Contaminants left behind in the valves of the pump this may
result in a decreased capacity of the pump.
Clean the valves if necessary. Thereto remove the relevant hose
pillar out of the pump housing, remove the valve and clean it.
Re-assemble in reverse order.
If the installation is not used for a longer period of time, the
pump must be operated regularly. By doing so a proper func-
tioning of the valves is ensured.
Winterising
The whole waste system should always be drained to prevent
damage caused by freezing.
Draining
Remove the suction hose and run the pump for a few minutes
until it is dry.
Technical data
Electric motor
Type
: Permanent magnet DC motor
Voltage
: 12 V
DC
24 V
DC
Current (maximum) :
6 A
4 A
Pump
Type
: Self-primimg diaphragm pump
Capacity, at 0 m head : 23 I/min (5.1 Imp. Gallon)
Max. suction height : 3 metres column of water (10’)
Max. head
: 5 metres column of water (16’5”)
Max. suction head
: 5 metres column of water (16’5”)
Material
Pump housing
: Plastic
Hose pillars
: Plastic
Diaphragm
: Neoprene rubber
Valves
: Neoprene rubber
Bell housing
: Aluminium, coated
Connections
For hose
: 38 mm ID (1 1/2”)
Weight
: 7 kg (15 Ibs)
