Trouble-Shooting - Mettler Toledo InTrac 777-SL Instructions D'utilisation

32
7. Carefully insert O-rings "1" (immersion tube) and "3" (cen-
8. Check the O-ring on the centering spigot of the lock cham-
9. Carefully push lock chamber over immersion tube. Align
10.Mount lock chamber on guide tube and press in (resistance
For further installation work (attachment to vessel, connection
of pneumatic and rinsing water systems, etc.) see Section 4.2
"Fitting and installation work".
7.

Trouble-shooting

In this Section you will find an overview of possible malfunctions
which could appear during operation of the retractable housing,
and information on how to rectify them.
Malfunction
Immersion tube can-
not be inserted
Immersion tube
remains stuck bet-
ween the end positi-
ons "Maintenance"
and "Measuring"
Sample medium dis-
charges via rinsing
lines
InTrac 777-SL-04-CH
52 400 841
tering spigot), and O-rings "2" (lock chamber) using the
assembly mandrel (Order No. 90 770 1790).
ber and replace if necessary. Lightly smear O-ring with lab
grease.
positioning pin of the lock chamber with the hole in the guide
tube and guides of the immersion tube piston with the cor-
responding holes in the lock chamber.
of the O-ring must be overcome). Finally, fasten with the 4-
fastener screws previously removed.
Cause
There is no electro-
de/sensor installed in
housing
No or insufficient con-
trol air pressure
Leak in control air
system
Deposits of sample
medium lead to seiz-
ing of immersion tube
Seals of lock chamber
are defective
© 06/00 Mettler-Toledo GmbH, CH-8606 Greifensee
InTrac ® 777-SL / InTrac
Remedial action
Install electrode/sensor
Check control air
system/adjust pressure
Check/make leakproof
control air system
Remove housing and
clean (see Section 8
"Maintenance")
Remove housing and
replace seals (see
Section 6, "Mainte-
nance")
Printed in Switzerland
® 776-SL