21
B. ELECTRONIC CONTROL BOX
PROBLEM:
SOLUTION:
Digital display is not functioning.
• Turn electronic control box power switch
ON
(see section 6.C.1).
• Check 12 Volt DC power supply (see section
6.B.3).
• Check all electrical connections.
Digital display does not display expected values. • Capstan size is different from capstan selected
on electronic control box (see section 6.C.2).
Numbers on digital display start counting up and
do not stop with no load on the capstan.
• Load cell is not properly connected to the elec-
tronic control box. Verify all connections are
made and are tight (see section 6.B.1)
Capstan does not stop rotating when pro-
grammed tension limit is reached.
• TENSION LIMIT CONTROL is
OFF
.
• Tension limit is not set to desired load. Press
the “Prog” Button and ▼ button simultaneously.
Press the ▲ and ▼ buttons to increase or
decrease the tension limit. Press “Prog” to save
the set point. (see section 6.C.3).
• Footswitch is not properly connected to the elec-
tronic control box. Verify all connections are
made and are tight. (see section 6.B.2).
Capstan stops rotating before line tension reach-
es preset load limit programmed into electronic
tension controller.
• Adjustable pressure relief valve is set lower than
programmed tension limit. Increase adjustable
relief valve setting (see section 11.B).
• Tension limit is not set to desired load. Press
the “Prog” Button and ▼ button simultaneously.
Press the ▲ and ▼ buttons to increase or
decrease the tension limit. Press “Prog” to save
the set point. (see section 6.C.3).
Chart recorder is not functioning.
• Check to see that the card is firmly inserted in
the slot.
• Verify that the chart recorder’s Record Mode has
been switch to
ON
. Red LED light is lit.
