Cannon Instrument CAV-2000 - Manual (Page 79)

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CANNON ® Automatic Viscometer Models CAV-2100 and CAV-2200 with VISCPRO ® Instruction & Operation Manual
Version 2g — May, 2009; CANNON ® Instrument Company
2139 High Tech Road • State College, PA 16803 • USA
CAV-2000 top view (flip-cap on
expansion vessel in foreground)
flip-cap
vessel is located at the top of
the temperature bath and is
accessible from the top of the
unit. Since bath fluid expands
when it is heated, the expan-
sion vessel contains any
overflow of bath fluid during
high-temperature CAV
operation (see photo).
Filling the bath
CAUTION
All fill and drain procedures
should be performed when
the bath fluid is at ambient lab
temperature. The procedure
below provides instructions
for maintaining bath fluid
levels. For instructions on
filling an empty bath, consult the CAV Installation & Setup Guide.
Fill procedure 1. Obtain the (supplied) funnel.
2. Locate the expansion vessel
(CAV-2100) or the top bath
flange (CAV-2200) at the top
of the temperature bath.
3. For the CAV-2100, open the
flip-cap on the expansion
vessel (see photo). For the
CAV-2200, loosen the
knurled thmbscrew (see
photo) securing the alumi-
num hole cover to the top
bath flange and slide the
cover free of the opening.
Then insert the appropriate
funnel in the opening.
4. Using the funnel, introduce the appropriate grade of silicone bath
fluid into the expansion vessel (CAV-2100) or bath (CAV-2200).
5. Continue adding fluid until the liquid level rises to the cold fill level.
For the CAV-2100, that level is even with the bottom of the top bath
flange. For the CAV-2200 that level is about 2” or 5 cm below the top
flange, and is marked by a decal fill line.
6. When done, remove the funnel and replace the flip-cap or hole cover.
Check the bath fittings for leaks to complete the fill procedure.
Tighten fittings if necessary.
CAV-2200 fill hole cover
Expansion vessel with liquid level
elevated at high temperature
meniscus
level