Readings Are Slow Or Inconsistent; Problem #5 - Decagon Devices AquaLab 4TE Operator's Manual

AquaLab
12. Troubleshooting
b. Locate the panel where the power cord plugs in. Th e fuse box
is on the right side of that panel. Press in on the release tab
and pull the fuse-holder out. Pull the broken fuse(s) out and
replace with a 1.25 Amp 250V fuse.
Caution: Do not use any other kind of fuse or you will risk dam-
age to your instrument as well as void your warranty.
c. Replace the fuse-holder and push it into the fuse-well until
the release tab snaps in place.
d. Re-connect the power cord and turn your instrument on. If
the fuse blows again, a failed component may be causing the
problem. Contact Decagon to make arrangements for repairs.
2. PROBLEM:

Readings are slow or inconsistent.

SOLUTIONS:
1) Th e sample chamber may be dirty. Refer to Chapter 6 for di-
rections on cleaning the sample chamber.
2) Th e temperature diff erence between the sample and the block
chamber may be too great. Th e sample will need to equili-
brate to instrument temperature before a fast, accurate read-
ing can be made. (Refer to Chapter 8, Samples Not at Room
Temperature.)
3) Some products absorb or desorb moisture very slowly, caus-
ing measurements to take longer than usual, and nothing can
72