Conair GB/ WSB - Manual (Page 12)

DIAGNOSTICS - for the CHECK OUT PROCEDURE
If display fails to come on at all:
check for power at outlet.
Check the 1/2 amp fuse on panel front.
If first display says ( TWELVE ), this is NOT the correct manual for
this software. Obtain a TWELVE software manual.
Possible model numbers are: 140, 220, 240, 420, 440, 940, 1840.
If model number is not correct for you unit:
see the next page, SELECTING CORRECT MODEL.
If display stays at ( 0.0):
check for damage to load cells or load cell wires.
Load cell distorted upward may produce a display of ( 0.0).
If unit displays randomly drifting numbers:
check to see load cells are plugged in.
If display shows about (- 1250.0) or ( -4500) for 900 series:
check that the weigh bin is in place resting on the load
cells. This number is about the weight of the weigh bin.
If display is steady but not near zero:
Recalibration of load cells will most likely fix this. This
is covered in next section.
If there is no response from the display when the bin is touched:
check that load cell plug screws are secure.
If response is not sensitive or does not return to its start point:
check for interference around weigh bin.
If pressing * does not display (PASSWORD):
you are not in the normal power-up mode or the keypad
doesn't work. Normal mode is indicated by the ABSENCE of
the letter M or P at the left of the display.
If display says INVALID after entering the password number:
you pressed the wrong keys or the password number has been
changed and it is no longer 22222. Call us for help.
If an air solenoid does not operate:
check the 1/2 amp fuse.
check solenoid cable connected properly and fully seated.
check mix chamber door closed, safety interlock engaged.
If a slide or dump valve does not open:
check that the air supply is connected.
check for proper air line connections to cylinder.
If color or additive auger motor does not run:
check the 3 amp fuse.
check that the motor is plugged into proper outlet.
check for faulty motor by plugging it into a known source of
110 volt A.C. power.
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