Fault Finding Chart - Homa H 106 Serie Original-Manuel D'instructions De Montage

10. Fault Finding Chart

Before maintenance or repair disconnect the pump
from the power supply to avoid accidental starting of the
pump!
Fault Cause
Motor does not start. • Supply failure;
Fuses blow or motor
short-circuit;
starter trips out
earth-leakage;
immediately. Cau- fault in cable or
tion: Do not start
motor winding
again!
• Fuses blow due
to use of wrong
type of fuse
• Impeller blocked
by impurities
• Float switch out
of adjustment or
defective
• Low setting of
Pump operates, but
motor starter trips
thermal relay in
out after a short
motor starter
while
• Increased cur-
rent consump-
tion due to large
voltage drop
• Impeller blocked
by impurities.
Increased cur-
rent consump-
tion in all three
phases
Pump operates at • Impeller blocked
below-standard
by impurities
• In fact of wear
performance and
power consumption
out, the distance
between impeller
and suction plate
may be raised
• Wrong direction
of rotation (only
3 Ph-pumps)
Pump operates, but • Discharge valve
gives no liquid
closed or
blocked
• Non-return valve
blocked
Remedy
• Have the cable
and motor
checked and
repaired by a
qualified electri-
cian
• Install fuses of
the correct type
• Clean the impel-
ler
• Check the float
switch
• Set the relay in
accordance with
the specifica-
tions on the
pump label
• Measure the
voltage between
two motor
phases. Toler-
ance: ± 10% (±
5% for explo-
sion-proof
pumps)
• Clean the impel-
ler
• Clean the impel-
ler
• Readjust the
distance be-
tween impeller
and suction plate
or replace the
wear out parts
• Check the direc-
tion of rotation
and possibly
interchange two
phases (see
section 6.4.)
• Check the dis-
charge valve and
possibly open
and/or clean
• Clean non-return
valve
15
WEEE Notice
The Directive on Waste Electrical and Electronic Equipment
(WEEE), which entered into force as European law on 13th Feb-
ruary 2003, resulted in a major change in the treatment of electri-
cal 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 reuse, 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
human health and environment. For more information about
electronic and electrical waste equipment disposal, recovery, 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.