Finish Thompson BE-55C - Manual (Page 25)

24
1. Place a jumper wire between wires #13 and #14. Verify that no wires are touching any metal parts.
2. Restore power to the unit. After about 6 seconds you should hear a click. Depress the Process
Switch (with the TAS3 jumper installed). Wait approximately 10 minutes.
3. Watch the Vacuum Gage. If the unit begins to show vacuum, see how high it goes. It should reach
–19”Hg to 24”Hg. If it does, replace TAS3. If no vacuum forms, the Divert Solenoid Valve is stuck in
the water position. Refer to the Divert Valve Repair or Replacement section of this manual for
further instructions.
PROBLEM: ALL DISTILLATE GOES INTO THE RECYCLED GLYCOL DRUM
Possible Cause 1 & 2: Wire/Terminals on TAS3 are touching or TAS3 is defective or
Stuck/Faulty Divert Valve Solenoid
CAUTION: Disconnect electrical power to the BE unit before performing tests on
the temperature activated Switches (TAS)
The first sign this is going to occur is if the Vacuum Gage begins to show vacuum as soon as the unit is
turned on.
Check TAS3. This is a “normally open” switch threaded into the front of the heater panel behind its
access panel. This switch is supposed to activate the Divert Solenoid Valve to begin processing the
glycol, it should close only when the Process Tank reaches 280ºF.
 Check for continuity between TAS3’s two leads. 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 instructions.
PROBLEM: UNIT WILL NOT DRAIN OR LESS THAN 7 GALLONS OF RESIDUE DRAINED.
CAUTION: Do not open the fill valve or drain valve during operation or while the
unit is still hot. Allow a minimum of two hours for cooling before draining or
refilling.
CAUTION: Wear proper eye and skin protection when working with this equipment.
Possible Cause 1: Air Supply not Connected
 Air supply not connected. Verify proper air supply hook-up (see “Installation and Start-up” section of
this manual)
Possible Cause 2: Drain Assist Switch is Defective
 With power on to the unit, first check for 240 volts at the switch (across wires #7 and #L2), if voltage
is present depress the drain assist switch and check for 240 volts across wires #19 and #20, if no
voltage is present then the switch is defective.