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26
T
ROUBLESHOOTING
R
9 TROUBLESHOOTING
The instrument does not operate
Check:
•
the connection to the mains electricity supply
•
the power on/off switch position at the rear of the Viscometer head
The spindle does not rotate concentrically
Check:
•
that the spindle is correctly adjusted to the shaft
•
that the union between spindle and shaft is clean
The instrument does not read zero in vacuum
Check:
•
that the instrument is levelled correctly
Viscosity reading is not stable or not very accurate
Check:
•
that the instrument is levelled correctly
•
that the rotation speed/spindle type selection is correct
•
that the temperature of the sample is stable
Viscometer head slips down the column
•
tighten the two nylon grub screws on the head mounting bracket using the hexagonal wrench
supplied
2300_TMA_0377_00_01.book Page 26 Thursday, March 29, 2007 1:32 PM