Finish Thompson BE-55C - Manual (Page 20)

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Possible Cause 3: Debris in Aspirator
 Check for foreign matter logged in the Aspirator. The Aspirator is a 2” diameter plastic “tube”
attached to the Circulation Pump’s elbow. Restriction of liquid or airflow will cause low vacuum.
1. Drain the Pump Reservoir of all liquid through the petcock on the bottom of the reservoir.
2. Tilt the pump’s motor to the side to expose the Circulation Pump and the Aspirator.
3. Remove the hose that is attached to a barbed hose fitting on the Aspirator.
4. Remove the Aspirator by unthreading it from the pump’s elbow.
5. Clean out the inside taper of the Aspirator and the three orifices inside (at this time check for any
noticeable signs of corrosion to the brass orifice insert).
6. Remove the barbed hose fitting from the side of the Aspirator. Carefully clean out the tiny hole
under the barbed fitting – a paper clip works well.
7. Reassemble the Aspirator to the pump’s elbow, reconnect all fittings and hoses and refill the Pump
Reservoir to the proper level.
Possible Cause 4: Stuck/Faulty Divert Solenoid Valve.
Refer to possible cause “Autofill Not Functioning” section on page 18.
Possible Cause 5: Faulty Vacuum Gage
 The vacuum gage can show inaccurate vacuum levels if it receives shock or is subject to excessive
moisture or temperature. One sign of problems would be if the gage sticks or does not return to
zero. Replace gage if found to be faulty.
PROBLEM: PREMATURE SHUTDOWN (MORE THAN 8 GALLONS IN PROCESS TANK)
Possible Cause 1: Electrical power outage.
If power to the unit is interrupted (even for a second), the unit will shut off. The cycle can be restarted
by pressing the On/off Switch to the ON position (the unit may have to cool before it will restart).
Possible Cause 2: Divert Valve is not diverting.
To check if the divert valve is diverting, turn power off at the main breaker, jump wires #13 and #14 at
TAS3 together and restore power to the unit. At this point, restart the unit, if the vacuum gage does not
register vacuum:
 The divert valve solenoid is bad and will need to be replaced, or
 It is mechanically stuck in the condensed water position, which will cause the distillation tank to
activate the systems overtemp switch (TAS2), which will shut the unit down leaving more than 8
gallons left in distillation tank. A quick way to check this is by putting your hand over the processed
hose and feel for suction, if you feel suction, the valve is stuck and will need to refer to the
instructions for cleaning it.
If vacuum is created, the divert valve is operating correctly, proceed to check TAS3.