Warranty And Repair; Maintenance; Mains Voltage And Changing The Line Fuse - Hameg HM7042-5 User Manual

class 2. The instrument may be used in any position, however,
sufficient ventilation must be assured as convection cooling is
used. For continuous operation prefer a horizontal or slightly
upward position using the feet.
Do not cover either the holes of the case nor the
cooling fins.
Specifications with tolerances are valid after a 30 minute warm-
up period and at 23 degrees C. Specifications without tolerances
are typical values of an average instrument.
1.7

Warranty and Repair

Our instruments are subject to strict quality controls. Prior to
leaving the manufacturing site, each instrument undergoes a
10-hour burn-in test. This is followed by extensive functional
quality testing to examine all operating modes and to guarantee
compliance with the specified technical data. The testing is
performed with testing equipment that is calibrated to nation-
al standards. The statutory warranty provisions shall be gov-
erned by the laws of the country in which the product was
purchased. In case of any complaints, please contact your
supplier.
The product may only be opened by authorized and
qualified personnel. Prior to working on the product or
before the product is opened, it must be disconnected
from the AC supply network. Otherwise, personnel
will be exposed to the risk of an electric shock.
Any adjustments, replacements of parts, maintenance and re-
pair may be carried out only by authorized technical personnel.
Only original parts may be used for replacing parts relevant
to safety (e.g. power switches, power transformers, fuses). A
safety test must always be performed after parts relevant to
safety have been replaced (visual inspection, PE conductor test,
insulation resistance measurement, leakage current measure-
ment, functional test). This helps ensure the continued safety
of the product.
1.8

Maintenance

The instrument does not require any maintenance. Dirt may
be removed by a soft moist cloth, if necessary adding a mild
detergent. (Water and 1 %.) Grease may be removed with ben-
zine (petrol ether). Displays and windows may only be cleaned
with a moist cloth.
Do not use alcohol, solvents or paste. Under no
circumstances any fluid should be allowed to get
into the instrument. If other cleaning fluids are
used damage to the lacquered or plastic surfaces is
possible.
1.9

Mains voltage and Changing the line fuse

A main voltage of 115 V and 230 V can be chosen. Please check
whether the mains voltage used corresponds with the voltage
indicated by the mains voltage selector on the rear panel. If not,
the voltage has to be changed. In this case the line fuse has to
be changed, too.
Please note:
After changing the main voltage, the line fuse has
to be changed. Otherwise the instrument may be
destroyed.
The fuses are accessible from the outside and contained in
the line voltage connector housing. Before changing a fuse
disconnect the instrument from the line, the line cord must be
removed. Check fuse holder and line cord for any damages. Use
a suitable screw driver of appr. 2 mm to depress the plastic
fuse holder releases on both sides, the housing is marked where
the screw driver should be applied. After its release the fuse
holder will come out by itself pushed forward by springs. The
fuses can then be exchanged, please take care not to bend the
contact springs. Reinsertion of the fuse holder is only possible
in one position and by pressing against the springs until the
locks engage.
It is forbidden to repair defective fuses or to bridge them by
any means. Any damage caused this way will void the warranty.
Types of fuses:
Size 5 x 20 mm; 250V~,
IEC 60127-2/5
EN 60127-2/5
Line voltage Correct fuse type
230 V 2 x 2,5 A slow blow
115 V 2 x 5 A slow blow
I m p o r t a n t h i n t s
Subject to change without notice
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