VACUUBRAND MPT 200 - Manual (Page 12)

page 12 of 20
Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefully
the validity of this document with respect to his product. Manual-no.: 999226 // 07/10/2011
Troubleshooting
Fault Possible cause Remedy
❑ No display. ➨ Power supply (wall plug) not
plugged in, no power avail-
able?
✔ Plug in power supply, con-
nect cable of power supply
(wall plug) to DCP 3000.
Switch on device. Check
mains fuse.
➨ DCP 3000 switched off? ✔ Switch device on.
➨ Power supply (wall plug) not
connected to DCP 3000?
✔ Connect cable of power sup-
ply (wall plug) to DCP 3000.
➨ Other causes (device defec-
tive)?
✔ Contact local distributor.
❑ Malfunction of gauge
head (warning triangle
and display are flashing).
➨ MPT 100 not connected? ✔ Plug the MPT 100 into the
socket of the DCP 3000.
➨ MPT 100 or connecting cable
defective?
✔ Replace MPT 100 or con-
necting cable if necessary.
➨ Cold cathode not started? ✔ Wait for starting of the cold
cathode and stabilization
time.
➨ Address of the MPT
changed?
✔ Remove rubber plug from the
address switch and set the
address to «1» using a screw
driver. Install rubber plug.
❑ The pressure reading
is too high in the high
vacuum range.
➨ Vacuum gauge head contami-
nated?
✔ Clean the sensor.
➨ Type of gas not considered? ✔ Comply with correction fac-
tors.
❑ The pressure reading is
too low at atmospheric
pressure.
➨ Vacuum gauge head not cor-
rectly adjusted?
✔ Readjust pressure vacuum
gauge head correctly at
atmospheric pressure.
➨ Deviation within the range
of the measurement uncer-
tainty?
✔ Use pressure transducer
VSK 3000 (see accessories).
❑ Displayed pressure value
is fluctuating.
➨ Pressure fluctuations due
to the set-up of the vacuum
system?
✔ No measuring fault. Check
and change set-up of the
vacuum system if necessary.
➨ Plug of the cable to the vacu-
um gauge head not correctly
plugged in?
✔ Plug the cable correctly into
the socket at the rear of the
DCP 3000.
➨ The vacuum gauge head
MPT 100 is still in the stabili-
zation phase?
✔ Allow for a stabilization time
of 5-10 minutes.
➨ The MPT 100 was exposed
to a significant pressure
change?
✔ Allow for a stabilization time
of 5-10 minutes.
➨ Pressure measurement at a
pressure above 50 mbar?
✔ Deviation within the range of
the measurement uncertain-
ty. Use pressure transducer
VSK 3000 (see accessories).