Cannon Instrument miniPV-X - Manual (Page 86)

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CANNON ® miniPV ® -HX Automatic Viscometer with VISCPRO ® Instruction & Operation Manual
Version 1.0— January , 2011; CANNON ® Instrument Company
2139 High Tech Road • State College, PA 16803 • USA
5. When fluid has drained from the bath, close the drain valve by
tightening the drain plug clockwise to its furthest position. Tighten
securely to prevent leaks.
6. Remove the drain hose from the drain tube.
7. Replace the front panel with the screws previously removed. Then
close the ear panels to complete the drain procedure.
Bath heaters
The miniPV Series Bath Unit is equipped with two heating elements
(control and auxillary).
Bath fluid safety features
The miniPV Series Bath Unit is equipped with a fluid level float sensor
suspended from the top bath flange at the front of the bath. If the bath
fluid level drops to an unacceptable level, a fluid level float warning will
abort bath operations until an acceptable bath fluid level is restored and
the miniPV Series is restarted.
Over-temperature thermistor The miniPV Series Bath Unit incorporates a thermal fuse suspended in
the bath fluid from the top bath flange. If the bath fluid temperature rises
above acceptable operating temperatures, the thermal fuse will abort bath
operations. if this occurs contact Cannon Service.
Checking solvent levels
Frequently inspect the user-supplied solvent vessel to ensure a steady
supply of cleaning solvent for the viscometer tubes. When the solvent
level drops to within 2.5-5.0 cm (1-2") of the bottom of the solvent vessel,
it should be refilled.
Solvent/drain lines
See the Installation section of the first chapter for information on solvent/
drain lines for the miniPV Series instrument.
Ventilation
The miniPV Series requires installation of the supplied 3” ventilation hose
to the exhaust shroud on the rear panel of the unit. The shroud must be
connected to a customer-supplied exhaust fan/ventilation system. A 3”-4”
hose adapter is shipped from CANNON Instrument Company with each
miniPV Series unit. The air flow rate and design of the exhaust fan must
be suitable to handle the vapors from the customer-supplied solvent and
samples.
Checking bath temperature
After the miniPV Series has been turned on, you may monitor bath
temperature via a reference thermometer in the bath or via the software
temperature display (Sample Input window). Temperature should rise
until the bath has attained the desired test temperature. Consult the