Homa TCV 409 Series, Original Instruction Manual

Page: 13 / 20

13
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 im-
mediately.
Caution:
Do not start again!
•
Supply failure;
short-circuit; earth-
leakage; fault in
cable or motor
winding
•
Have the cable
and motor
checked and re-
paired by a quali-
fied electrician
•
Fuses blow due to
use of wrong type
of fuse
•
Install fuses of
the correct type
•
Impeller blocked by
impurities
•
Clean the
impeller
•
Level switch out of
adjustment or de-
fective
•
Check the level
switch
Pump operates, but
motor starter trips
out after a short
while
•
Low setting of
thermal relay in mo-
tor starter
•
Set the relay in
accordance with
the specifications
on the pump label
•
Increased current
consumption due to
large voltage drop
•
Measure the volt-
age between two
motor phases.
Tolerance: ± 10%
•
Impeller blocked by
impurities. In-
creased current
consumption in all
three phases
•
Clean the
impeller
Pump operates at
below-standard
•
Impeller blocked by
impurities
•
Clean the
impeller
performance and
power consumption
•
Wrong direction of
rotation (only 3 Ph-
pumps)
•
Check the direc-
tion of rotation
and possibly in-
terchange two
phases (see sec-
tion 6.4)
Oil in the medium
•
Wear-out of the
radial shaft ring
•
Replace the ra-
dial shaft ring,
change the oil
Pump operates, but
gives no liquid
•
Discharge valve
closed or blocked
•
Check the dis-
charge valve and
possibly open
and/or clean
•
Non-return valve
blocked
•
Clean non-return
valve
•
Air in pump
•
Vent the pump
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 pre-
vention 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 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.