25
Subject to change without notice
1.7 Cooling
The warmth produced inside the HMP4030 / 4040 is conducted
to the environment by a temperature controlled fan. The fan and
the heat sink form a „cooling channel“ across the instrument.
The air intake is located on the left side, and the outlet on the
right side. Thus the dust contamination inside the instrument is
kept to a minimum. Be sure that on both sides of the instrument
enough space for heat exchange is provided.
Do not cover either the holes of the case nor the
cooling fi ns.
Should the temperature inside the instrument exceed 80 °C a
channel-specifi c overtemperature protection will automatically
switch off the affected channel.
Specifi cations with tolerances are valid after a 30 minute warm-
up period and at 23 °C. Specifi cations without tolerances are
typical values of an average instrument.
1.8 Warranty and Repair
HAMEG instruments are subjected to a strict quality control.
Prior to leaving the factory, each instrument is burnt-in for 10
hours. By intermittent operation during this period almost all
defects are detected. Following the burn-in, each instrument is
tested for function and quality, the specifi cations are checked
in all operating modes; the test gear is calibrated to national
standards.
The warranty standards applicable are those of the country in
which the instrument was sold. Reclamations should be directed
to the dealer where the instrument was purchased.
Only valid in EU countries
In order to speed reclamations customers in EU countries may
also contact HAMEG directly. Also, after the warranty expired,
the HAMEG service will be at your disposal for any repairs (see
RMA).
Return material authorization (RMA):
Prior to returning an instrument to HAMEG ask for a RMA
number either by internet (http://www.hameg.com) or fax. If
you do not have an original shipping carton, you may obtain
one by calling the HAMEG service dept (+49 (0) 6182 800 500)
or by sending an email to service@hameg.com.
1.9 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.
STOP
Under no circumstances any fl uid should be allo-
wed to get into the instrument. If other cleaning
fl uids are used damage to the lacquered or plastic
surfaces is possible.
1.10 Change of mains voltage and
fuse replacement
Change of mains voltage
A main voltage of 115V and 230V 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 mains voltage, the line fuse has
to be changed. Otherwise the instrument may be
destroyed.
Changing the line fuse
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 and
can be removed. 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.
Important hints
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 3,15 A slow blow
115 V 2 x 6 A slow blow
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