Cannon Instrument CAV-2000 - Manual (Page 82)

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
76
NOTE During normal operation, the green lamp on the heated sample tray
holder will illuminate and/or blink in tandem with the red LED on the front
panel ON/OFF switch. If the green lamp is NOT flashing, check cable
connections and sample block temperature (block may be overheated
and may need to cool down).
Using a temperature probe A recessed thermometer well (3.63 mm; 0.143” ID) at the front of the
sample tray permits insertion of a temperature probe to monitor tray
temperature for heated sample trays.
Splash guards
To reduce the risk of contaminating samples, and to protect the viscom-
eter tube from damage, the exposed viscometer tube tips should be
shielded with splash guards (provided). Use the captive thumb screw on
the top of the splash guard to secure it to the underside of the Bath Unit
frame in front of the viscometer tube tip. The felt pad should face the
tube tip (see photo, previous page).
Solvent system
The CAV requires a solvent system, which is used to wash the viscometer
tubes after each sample analysis. The solvent system consists of the
Solvent Dispensing Unit (SDU), the solvent/drain lines, and the user-
supplied solvent and waste cans. The SDU delivers to the CAV the
chemicals necessary to clean the viscometer tubes before and after oils
are tested. The solvent drain system collects the waste sample and solvent
used for cleaning and transfers them to the waste can provided by the
user.
A dual-solvent washing system for cleaning more viscous samples from
the viscometer tubes is available from CANNON
® .
heater
connection
waste
receiver
heated
drain
Installed heated sample tray (splash guard removed
on left viscometer tube to reveal tube tip)