MI 2087 Instaltest 61557
Maintenance
61
One set of full-capacity batteries can supply the instrument for approx. 50 hours
at the ratio measurement / pause = 5s / 25s.
Commander and Locator batteries:
Red lamp ON means low battery condition. Unscrew two screws on backside of the
device in order to remove battery cover. Use 9V battery type 6 LR 61!
LUXmeter batteries:
Blinking green lamp means low battery condition. Unscrew two screws on backside of
the device in order to remove battery cover. Use 9 V battery type 6 LR 61!
Notes!
•
Insert batteries correctly, otherwise test instrument will not operate and batteries
may be discharged; see the figure 51. for correct battery polarity.
•
Transfer stored results to PC, before removing the batteries!
•
The results will be lost, when the batteries are removed and all settable
parameters will be set to their initial values after replacing the batteries; see the
paragraph
•
4.5. Reset of the instrument.
In order not to loose stored data, follow the next procedure when replacing the
batteries:
-
Switch OFF the instrument.
-
Replace the batteries within one minute.
-
Switch ON the instrument,
Clr
message will not be displayed, indicating stored
data has not been erased.
5.2. Fuses
There are three fuses under battery compartment cover (see the figure 51.).
•
F1
=
M 0,315A/250V
, 20 × 5 mm (It protects internal circuitry of the test
instrument, if test tips are connected to mains voltage during Continuity of
protective conductors or Continuity measurement by mistake).
•
F2
=
F3
=
T 4A/500V
, 38 × 10 mm, Breaking capacity 10kA/500V, type FLQ4,
produced by Littelfuse (General fuse on input of measurement terminals L/L1
and N/L2).
Check the fuses F2 and F3, if one of the following malfunctions is noticed:
•
rcd
message is blinking after pressing the
START
key in all RCD functions as
well as in R
LINE
/Ipsc and R
LOOP
/Ipsc function.
•
>1999
Ω
Ω
Ω
Ω
message is displayed in R
±
200
mA
functions, in spite of shorted test
leads.
•
>200 M
Ω
Ω
Ω
Ω
or
>1000 M
Ω
Ω
Ω
Ω
message is displayed in R
ISO
function, in spite of
shorted test leads.
•
>1000 V
message is displayed in varistor TEST function, in spite of shorted test
leads.
Check the fuse F1, if
FuS
message is displayed in R
±
200
mA
functions.