Finish Thompson BE-15/15C - Manual (Page 5)

5
MODEL DETERMINATION:
The first step is to determine the model of the unit. This depends on the type of cooling system used.
There are three varieties
knowing which one you're dealing with is vital to proper troubleshooting.
1. BE-15 “Water-cooled” uses tap water (or an external cooling system) to recondense vapors.
2. BE-15C “Chiller” is the original design of BE-15C and uses a refrigeration/Freon cooling system.
3. BE-15C “Air-cooled” is the last design (and most common) and uses a fan-cooled radiator.
PART DESCRIPTIONS AND TERMINOLOGY:
Antifreeze - A cooling medium base. Composed of
ethylene glycol, corrosion inhibitors and other
additives, and dye.
Aspirator - An internally tapered, plastic tubular
attachment to the Vacuum/circulation pump used to
form Vacuum.
Condenser - A shell and tube heat exchanger. The
vapors pass through the tubes as cooling water
circulates through the shell to recondense the vapors
into a purified liquid. Part of the Distillate Piping.
Coolant - A mixture of Antifreeze and water (usually a
50/50 ratio). Used for heat removal.
Distillate Piping - The plumbing from the top of the
Process Tank to the discharge hoses.
Divert Solenoid Valve - (Divert Valve) An electrically
operated, 3-way mechanical valve used to control
Vacuum and allow the Processed Water and
Recycled Glycol to drain into separate containers.
Part of the Distillate Piping.
Drain Valve - Where the Residue is drained from the
Process Tank after the process is complete.
Fill Funnel - Where the waste coolant is poured into the
Process Tank. On the left side of a BE unit.
Heater Band - An externally mounted resistive-type
heating element strapped to the bottom of the
Process Tank.
Level Control Board - An electronic circuit board used
to control the start and end of the recycling process
depending on the liquid level in the Process Tank.
Level Control Probe - A device used to detect the
presence of liquid in the Process Tank.
Processed Water - The distilled water product that is
separated from the waste coolant after the recycling
process.
Process Tank - The main fifteen-gallon vessel where
the waste coolant is heated and vaporized. The Fill
Funnel and Drain Valve are attached to the left of
the tank.
Pump Reservoir - A five-gallon, square plastic tub that
acts as a priming and coolant reservoir for the
Vacuum/circulation Pump.
Recycled Glycol - The reclaimed glycol portion from
the waste coolant that is the result of the recycling
process.
Reinhibitor - A chemical package containing corrosion
inhibitors, buffers, and dyes that is added to
Recycled Glycol to make Antifreeze.
Residue - The wastes from the used coolant that remain
after processing.
Residue Run - The processing of the Residue drained
from the Process Tank to extract any remaining
Glycol.
TAS1 - Temperature Actuated Switch used to control
cooling water flow on water-cooled and refrigerated
models. Normally open until 180°.
TAS2 - Temperature Actuated Switch used as an
overtemp sensor for the Process Tank. Normally
closed until 385°.
TAS3 - Temperature Actuated Switch used to control
the Divert Solenoid Valve. Normally open until
280°.
TAS4 - Temperature Actuated Switch used as an
overtemp sensor for the Distillate Piping. Normally
closed until 150° or 180°.
Vacuum - Negative pressure used to reduce the boiling
point of the Glycol for processing at a safer, lower
temperature. A BE unit uses a level of -24” to -28”
Hg.
Vacuum/circulation Pump - A centrifugal pump that
sets into the Pump Reservoir. This pump circulates
glycol for cooling and is used to form Vacuum.
Waste Coolant - The dirty antifreeze/coolant before the
recycling process.
Water Solenoid Valve - An electrically operated, 2-way
mechanical valve used to control water flow on
water-cooled models.