Finish Thompson BE-15/15C - Manual (Page 21)

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PROBLEM: ALL 11 GALLONS OF DISTILLATE GO INTO THE RECYCLED GLYCOL DRUM.
Possible Cause 1 & 2: Wires/terminals on TAS3 are touching or TAS3 is defective or
Stuck/faulty Divert Solenoid Valve.
Disconnect electrical power to the BE unit before performing tests
on the Temperature Actuated Switches.
The first sign that this is going to occur is if the unit “belches” when pouring waste coolant into the Fill
Funnel. Also, the Vacuum Gage will begin to show vacuum on as soon as the unit is turned on.
Check TAS3. This is a “normally open” switch threaded into the front of the Process Tank behind the access
panel in the insulation (it may be slightly hidden under the insulation near the top of the opening). This switch
is supposed to activate the Divert Solenoid Valve to begin processing the glycol closes only once the Process
Tank reaches 280
F.
 For units H94 or older, TAS3 will be a 1/2” diameter silver and black sensor and have two wires (#13 and
#14) attached to it.
1. Verify that the solder connections are holding, and that neither of the wires or tabs are touching each
other. This would cause the activation of the Divert Solenoid Valve. Re-solder any loose connections
with a high-temp solder.
2. If the wires and tabs are OK, check continuity between the two tabs of TAS3. If the Process Tank is
cold, and TAS3 is closed, replace TAS3. If TAS3 is open, then the Divert Solenoid Valve is stuck or
faulty. Refer to the “Service Procedures: Divert Valve Repair or Replacement” section of this
manual for further instruction.
 For units I94 or newer units, TAS3 is a 1/2” diameter white ceramic sensor with a brass hex base, push-on
connectors, and “F280” written on it. Verify that the push-on connectors are crimped securely.
Check continuity between the two tabs of TAS3. If the Process Tank is cold, and TAS3 is closed, replace
TAS3. If TAS3 is open, then the Divert Solenoid Valve is stuck or faulty. Refer to the “Service
Procedures: Divert Valve Repair or Replacement” section of this manual for further instruction.
CAUTION: