HEC-Series Service Manual
TROUBLESHOOTING
10/21/01
8-1
8. Troubleshooting
Always check the machine thoroughly after remedying the problem to prevent the same cause from
reoccurring.
Symptom: Machine won’t run. (See Fault Identity, Section 6, TABLE 6-2)
Possible Cause
Possible Remedy
Intermittent power interruptions or power
failure. Fault #16
If there is a power failure or a power
interruption, the machine will advance to a
start-up mode when power is restored. After a
two hour period, the machine will restart
automatically if there is no other problem.
See Fault Identity, Section 6, TABLE 6-2.
A machine fault has occurred and the machine
has tried to restart unsuccessfully.
Enter the “Troubleshoot” mode and identify the
last occurring fault. See Fault Identity, Section
6, TABLE 6-2.
High/Low safety pressure switch stopped
machine. A machine fault #10, #11, #12, or
#13 has occurred.
See High/Low Pressure Switch, Section 9,
FIGURE 9-2. If the machine stops by low
pressure cutout, the switch will reset
automatically when the pressure raises to the
“cut-in” setting. If it stops by high pressure
cutout, the switch will have to be reset
manually. Upon tripping, the PLC will initiate
the start-up mode for two hours. The machine
will restart automatically at the end of two
hours if the switch is reset, or the machine can
be started immediately by pushing the “Start”
button.
Cutter or pump motor overload trips (circuit
breaker switches).
See Section 6, FIGURE 6-2, (switch box),
reset switch, push “Start” button to restart the
machine and check motor amps.
Bin thermostat contacts open.
Adjust or replace bin stat. See Section 9,
FIGURE 9-5. Make sure bin stat bulb is in the
proper location. See Section 3, FIGURE 3-12.
SVI switch open. (Input X7 light not on)
Make sure all switches are in their proper
setting, close switch, and push “Start” button.
Defective PLC.
Check power supply, fuses, and possible loose
connections before determining PLC defective.
Replace PLC.
Defective contactor, ice switch, selector switch,
control circuit fuse, etc.
See Wiring Schematic, Section 6, FIGURE 6-5
and check for open circuit. Refer to Section 6,
FIGURES 6-1 and 6-2 for control panel and
switch box parts.
A machine fault has occurred.
Enter the “Troubleshoot” mode and identify the
last occurring fault. See Fault Identity Section
6, TABLE 6-2.
Summary of Contents for HEC-10
Page 1: ...HEC SERVICE MANUAL ...
Page 95: ...HEC Series Service Manual SERVICE OPERATIONS 10 21 01 9 13 FIGURE 9 9 Cutter Water Tank Parts ...
Page 96: ...HEC Series Service Manual SERVICE OPERATIONS 10 21 01 9 14 FIGURE 9 10 Cutter Drive Parts ...
Page 97: ...HEC Series Service Manual SERVICE OPERATIONS 10 21 01 9 15 FIGURE 9 11 Cutter Parts ...
Page 106: ...HEC Series Service Manual MODEL NUMBER STRUCTURE 10 21 01 10 1 10 Model Number Structure ...
