Cannon Instrument miniAV-LT - Manual (Page 81)

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CANNON ® miniAV-LT Automatic Viscometer with VISCPRO ® Instruction & Operation Manual
Version 1.a— May, 2009; CANNON ® Instrument Company
2139 High Tech Road • State College, PA 16803 • USA
Temperature bath
The temperature bath is capable of maintaining constant temperatures
between -40°C and 30°C. Silicone bath fluid is agitated via an air pump.
Solid state temperature control circuits provide proportional control with
reset.
Bath fluid
The temperature bath is filled with Dow Corning 200 1 cSt silicone
fluid, available from CANNON
® Instrument Company.
Filling the bath
CAUTION Remove MAINS power from the instrument before beginning the fill
procedure and the stop cock valve is closed. The fill procedure should
be performed when the bath fluid is at ambient lab temperature.
Fill procedure 1. Obtain the (supplied) bottle, Fill Cap Assembly and bath fluid.
2. Remove the top panel of the bath unit to view and access internal
components.
3. Fill the bottle with silicone fluid and screw the Fill Cap Assembly
onto the bottle. Ensure that the breather tube is positioned with the
tube opening at the bottom of the bottle.
4. Insert the end of the fill tube from the Fill Cap Assembly into the slot
in the top of the bath flange.
5. Lift and invert the bottle to begin introducing 210 mL of the appro-
priate grade of ambient-temperature silicone bath fluid into the bath.
Add a small amount first and check for leaks.
CAUTION Do NOT overfill the miniAV-LT bath, as the liquid level will rise with
temperature.
6. When done, lower and invert the bottle to stop the fluid flow,
remove the fill tube from the bath, and detach the Fill Cap Assembly.
Store the bottle and Fill Cap Assembly in a safe place for future use.
7. Replace the bath top cover. Check the bath for leaks to complete the
fill procedure. Tighten fittings if necessary.
NOTE Periodically check the miniAV-LT when the bath fluid is at ambient
temperature to ensure that liquid is being maintained at the specified
cold fill level.