Homa CH 407 Series, Оригинальное руководство пользователя

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15
10. Fault Finding Chart
Before maintenance or repair disconnect the pump from
the power supply to avoid accidental starting of the pump!
Fault Cause Remedy
Motor does not
start. Fuses blow or
motor starter trips
out immediately.
Caution: Do not
start again!
•
Supply failure;
short-circuit;
earth-leakage
fault in cable or
motor winding
•
Have the cable
and motor
checked and
repaired by a
qualified electri-
cian.
•
Fuses blow due
to use of wrong
type of fuse.
•
Install fuses of
the correct type.
•
Impeller blocked
by impurities.
•
Clean the impel-
ler.
•
Level switch out
of adjustment or
defective.
•
Check the level
switch.
Pump operates, but
motor starter trips
out after a short
while.
•
Low setting of
thermal relay in
motor starter.
•
Set the relay in
accordance with
the specifica-
tions on the
pump label.
•
Increased current
consumption due
to large voltage
drop.
•
Measure the
voltage between
two motor
phases. Toler-
ance: ±10%
(±5% for explo-
sion-proof
pumps).
•
Impeller blocked
by impurities.
Increased current
consumption in
all three phases.
•
Clean the impel-
ler.
Pump operates at
below-standard
performance and
power consumption.
•
Impeller blocked
by impurities.
•
Clean the impel-
ler.
•
Wrong direction
of rotation.
•
Check the direc-
tion of rotation
and possibly
interchange two
phases
Pump operates, but
gives no liquid.
•
Discharge valve
closed or
blocked.
•
Check the dis-
charge valve and
open and/or
clean.
•
Non-return valve
blocked
•
Clean the non-
return valve.
•
Air in pump.
•
Vent the pump.
Pump cycling be-
tween start and
stop.
•
Level switch out
of adjustment or
defective.
•
Check the level
switch.
WEEE Notice
The Directive on Waste Electrical and Electronic Equip-
ment (WEEE), which entered into force as European law
on 13th February 2003, resulted in a major change in the
treatment of electrical equipment at end-of-life.
The purpose of this Directive is, as a first priority, the
prevention of WEEE, and in addition, to promote the re-
use, recycling and other forms of recovery of such wastes
so as to reduce disposal.
The WEEE logo on the product or on its box indicates that
this product must not be disposed of or dumped with your
other household waste. You are liable to dispose of all
your electronic or electrical waste equipment by relocating
over to the specified collection point for recycling of such
hazardous waste. Isolated collection and proper recovery
of your electronic and electrical waste equipment at the
time of disposal will allow us to help conserving natural
resources. Moreover, proper recycling of the electronic
and electrical waste equipment will ensure safety of hu-
man health and environment. For more information about
electronic and electrical waste equipment disposal, recov-
ery, and collection points, please contact your local city
centre, household waste disposal service, shop from
where you purchased the equipment, or manufacturer of
the equipment.