Chapter 6 Cooling Water System
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_________________
3,
41
H
3
(B)(C)E
7. Bilge Pump and Bilge Strainer (Optional)
7-1.
Introduction
7-1.1 General Introduction
Name
Bilge pump
Time
10 minutes
Rotation direction
Right
(viewed
from
!he impeller
side)
Weigh! Pump
1.4kg
Switch
ASSY
0.3kg
Negative pressure
detector
Diaphragm type
Temperature
-30'C~
80'C
7-1.2 Exterior
(1) Pump dimensions
Length 225mm
Yoke diamete
¢
61
Assembly hole diameter
¢5.3
Assembly pitch
50X90mm
For
further details
on
the above dimensions, refer to
External View (0790
001
0710).
(2)
Switch ASSY dimensions
Length
64mm
Assembly hole diameter
¢ 4.5
For further details
on
the above dimensions, refer to
External
View
.
{3)
Surface condition
Paint, plating, assembly, and finishing touches are
well-done and without rust , scratches or other blem-
ishes.
7-2. Description
7-2.1 Characteristics
(1)
Discharge At lift :
Om
discharge capacity : 20 £ /min. or
greater.
(2)
Automatic feeding height : 1 m or greater
(Limit for automatic feeding height : new pump with
inside parts wet, approx.
2m)
(3)
Automatic feeding time :
2~5secs.
(Limit for automatic feeding time : new pump with
inside parts wet, approx. 1 sec.)
(4)
Automatic stopping : Air intake causes negative pres-
sure triggering automatic stopping.
6-14
7-2.2 Insulation
(1)
Insulation resistance :
SOOV
with a megatester when
the difference between the continuity point and the
body
is
1 M Q or greater.
(2)
Insulation proof stress :
ACSO
between the
continuity
point
and
the
body, or
60hz
500v
for 1
minute when impressed current leakage is 1
OmA
or
lower.
7-2.3 Durability: Rated voltage when there is 3% salt
water 60
.e
+ engine oil 3%, and operation is
at 1800 cycles and there are no difficulties.
7-2.4 Vibration
proof:
Amplitude
0.51
mm (one side
of
the amplitude)
Vibration frequency
10~55Hz
Sweep time 90secs.
Direction of vibration each direction 4 hours
No difficulties after test period
7-3.
Cautions
(1)
Attach at a position higher than the bilge water away
from
rain
or other water, and
50~
70cm above the bot-
tom of the boat.
(2)
Never run the pump dry.
Be
sure that the strainer
is
inserted
in
the drain water before pushing the switch.
If
no
water
is
being drawn up after a period
of
1 O sec-
onds or more, prime the pump. (Do not run the pump
for longer than 1 0 seconds when no water is being
drawn up.)
(3)
When the pump has not been used for a long period of
time, the inside of the pump will
be
dry and drawing
ability will
be
lowered. Before reusing, clean the inside
of the pump or prime it to insure that it is wet. and
check to
be
sure that the pump
is
then operating cor-
rectly.
(4)
When charging the diesel engine oil, wait a period of
30 minutes
or
longer from the time of stopping (oil
temperature
20~
70'C). Refrain from operation when
the oil temperature
is
below 1
s·c,
or above
so·c.
(5)
When the bilge inside the pump or hose freezes, com-
pletely melt the water with a steaming towel before
beginning operation. When the temperature inside the
pump is low, it will take a longer amount of time for the
pump
to
drain off the bilge.
(6)
The impeller replacement
kit
includes one impeller and
3 washers for adjusting the side gap.
If
after replacing
the impeller the pump does not drain, place side gap
adjustment washers underneath the bottom plate to
adjust. Select the number of washers used
in
accor-
dance with the following. (When the pump is draining,
the electric current load
is
about
SA.
When there are
too many washers, the electric current value will be
too great and will blow a fuse.)
Printed
in Japan
HINSHI-H8009
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