Owner's manual

6.1 Problems
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743 Rancimat
6 Troubleshooting
6.1 Problems
Problem Cause Remedy
The pump is louder
than normal.
The air flow is blocked
somewhere before or after
the pump.
￭ Check dust filter (3-20) and, if necessary,
replace.
￭ Check filter tube (4-4) on the drying flask
cover for blockages and, if necessary, free
with a gentle tap.
￭ Examine FEP tubings (2-6), (3-13),(3-14)
and (3-17) for blockages and, if necessary,
replace.
Extra air is sucked in at
somewhere else other than
the dust filter. There is a
leak somewhere in the sys-
tem before the pump.
￭ Check FEP tubings (3-13), (3-14) and
(3-17) for cracks, kinks etc. and tighten. If
necessary, replace.
￭ Place the drying flask cover (3-10) correctly
on the drying flask and screw tight.
No air flow can be
detected in the reac-
tion vessel (it does
not bubble),
although the pump
is running.
The air supply is blocked.
￭ Remove FEP tubing (5-1) from the thread
adapter (5-3). A slight air flow must be dis-
cerned here. If this is not the case, please
contact Metrohm Service.
￭ Check FEP tubing (2-6) for blockages. If
necessary, clean or replace.
￭ Check thread adapter (5-3) and air tube
(5-5) on the reaction vessel cover for
blockages. If necessary, clean or replace.
The FEP tubing for the air
supply is defective.
Check FEP tubing (2-6) for cracks, kinks etc. If
necessary, replace.
The FEP tubing for the air
supply is not connected
correctly.
Tighten FEP tubing (2-6) on both sides.
The air tube (5-5) does not
immerse in the sample.
￭ Push reaction vessel cover (5-8) down as
far as the limit stop.
￭ Use more sample.