Operating Conditions; Warranty And Repair; Maintenance; Changing The Mains Voltage And Fuse - Hameg HM6050-2 User Manual

I m p o r t a n t H i n t s
It is prohibited to disconnect the earthed
protective connection inside or outside the
instrument!
As mentioned in paragraph "Safety" the LISN has
to be operated on athree line mains outlet (with pro-
tective ground line). An interface cablebetween the
RS-232 interface of the LISN and the COM port of a
PCcauses a galvanic connection between the two
devices. To excludenegative effects on other safety
provisions the PC's power cable mustbe connected
to the same mains outlet as the LISN.
All interface lines are galvanic coupled to the LISN.
Opening of the instrument is only allowed to qualified
personnel Prior to opening, the instrument must be
disconnected from the line voltage and all other
inputs/outputs. In any of the following cases the
instrument must be taken out of service and locked
away from unauthorized use.
This may occur:
– if the instrument shows visible damage,
– if the instrument has loose parts.
– if the instrument does not function,
– after long storage under unfavourable circum-
stances (e.g. outdoors or in moist
ments),
– after excessive transportation stress (e.g. in poor
packaging).
1.6

Operating conditions

The Line Impedance Stabilization Network HM6050-
2 has to beoperated according to the regulations as
defined in VDE 0876 Part1("Measurement of radiated
emissions"). It conforms to the regulationsas defined
in CISPR Publ.16 or. EN55011. The ambient tempe-
rature range during operation should be between
+5 °C and +40 °C and should not exceed –20 °C or
+70 °C during transport or storage. The operational
position is optional, however, the ventilation holes
on the HM8001-2 and on the plug-in modules must
not be obstructed. In principle the instrument may be
used in any position, however sufficient ventilation
must be ensured. Operation for extended periods
of time requires the horizontal or tilted (handle)
position. Nominal specifications are valid after 30
minutes warm-up at 23 deg. C. Specifications wit-
hout tolerances are typical values taken of average
production units.
Do not obstruct the ventilation holes!
16
Subject to change without notice
1.7
Our instruments are subject to strict quality con-
trols. 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 national standards. The statutory
warranty provisions shall be governed by the laws of
the country in which the product was purchased. In
case of any complaints, please contact your supplier.
Any adjustments, replacements of parts, mainte-
nance and repair may be carried out only by autho-
rized 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 measurement, functional test). This
helps ensure the continued safety of the product.
environ-
1.8
The instrument does not require any maintenance.
Dirt may be removed by a soft moist cloth, if ne-
cessary adding a mild detergent. (Water and 1 %.)
Grease may be removed with benzine (petrol ether).
Displays and windows may only be cleaned with a
moist cloth.
Before cleaning the measuring instrument, please make
sure that it has been switched off and disconnected from
all power supplies (e.g. AC supply network or battery).
No parts of the instruments may be cleaned with
chemical cleaning agents (such as alcohol, acetone or
cellulose thinner)!
1.9
The internal power supply unit of the HM6050-2 con-
tains a fuse. At delivery (ex factory) the HM6050-2
is set to the mains voltage according to the country
the instrument is going to be operated.

Warranty and Repair

The product may only be opened by autho-
rized and qualified personnel. Prior to work-
ing 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.

Maintenance

Changing the mains voltage and fuse