Problem
Leaking liquid between instrument and
bottle
Liquid discharge at the upper edge of
the dispensing cylinder
997490
Possible cause
Recirculation tube not
connected
Volatile reagent dis-
pensed without sealing
ring
Piston not in lowest po-
sition after dispensing
Hygroscopic dispensing
medium leads to a leak-
age of medium
11 Troubleshooting
Corrective action
Connect recirculation tube (First
Steps, p. 59, Fig. 3).
Install sealing ring for valve block
(First Steps, p. 59).
After use, always depress the pis-
ton to the lower stop (put it in the
"parking position").
(see Dispensing, p. 62)
Regularly wipe off any accumula-
tion of liquid on the upper edge of
the dispensing cylinder
Operating manual
77