Operation
Op"ration
Precautions
Before
taking the unit into operation,
check the
following:
.
All recommended safety
devices are installed.
.
The cable
and cable entry
have not been damaged.
.
All debris and
waste material has been
removed.
NOTICE:
Never operate the
pump with the discharge
line blocked, or
the discharge
valve closed.
WARNING: Crush
Hazard
Risk o{ automatic
restart.
Distance to
wet areas
Noise level
WARNING:
Electrical Hazard
Risk
of
electrical shock or burn.
You must connect
an additional
ground-
(earth-)
fault
protection
device
to the
grounded
(earthed)
connectors
if persons are
likely to come into
contact
with liquids that are also
in contact with
the
pump
or
pumped liquid.
CAUTION:
Elearical Hazard
Risk of electrical shock or
burn. The equipment
manufacturer
has not evaluated
this unit
for use
in
swimming
pools. lf
used
in
connection
with swimming
pools
then special
safety
regulations apply.
NOTICE:
The noise
level
ofthe
product is lowerthan 70 dB.
However, the
noise level
of
70 dB
may
be exceeded
in
some
installations and
at certain oPerating
points
on
the
performance
curve.
Make sure that
you
understand
the
noise level requirements
in the environment
where
the
product
is installed.
Failure to do so
may result in hearing
loss
or
violation of
local laws.
Estimate
zinc
anode
replacement
intervals
The mass and surface area
of the zinc anodes
are designed to
protect
the
pump
surface
for 1 year in sea water
with an average temperature
o{ 20"C
(68"F).
Shorter
insPection
intervals and anode
replacement
can be required, depending
upon
the water
temperature and
the
chemical
composition as
well as the
presence of other metals
in the
vicinity of
the pump.
The rate of
zinc
consumption,
and
the appropriate
inspection intervals, can be estimated
by measuring
how much zinc
is
consumed
during the
first two months following
installation.
Anodes are
replaced when the anode
mass is
reduced to a selected
{raction of its
initial
mass. The recommended
interval for the selection
fraction is 0.25-0.50
(25-50%),
1. Remove, weigh, and
reinstall one or more
o{the exterior zinc
anodes before starting
up the
pump.
2.
Aftertwo months. remove
and weigh the same
zinc anode or anodes
again.
Flygt 3171
lnstallation, Operation.
and Maintenance
Manual
35