ITW Dynatec DYNAMINI - Page 43

Page 7-6
Revised 1/05
ITW Dynatec c. 2004
DYNAMINI ASU Manual #20-25
X4
Problem Possible Cause Solution
Hopper temperature is
higher than setpoint
(overtemp).
Display for Hopper =
EO1.
Display for Hopper =
EO2.
Hopper does not heat,
but LED is ON.
1.Hopper sensor not fully
inserted.
2.Hopper sensor (X4)
inoperative.
3.Inoperative PCB.
1.Plug connection X4 on
PCB is loose.
2.Temperature sensor in-
operative.
1.Hopper sensor short cir-
cuit.
2.Shortcircuitatplugcon-
nectionX4onPCB.
3.Inoperative PCB.
1.Hopperfuses(F4&F11)
inoperative on PCB.
2.Hopper heater element
is inoperative.
3.Disconnectioninhopper
heater circuit.
4.Inoperative PCB.
1.Check hopper sensor.
2.Replace hopper sensor if resist-
ance does not comply with resist-
ance table.
3.Replace PCB.
1.Restore connection.
2.Replace sensor if resistance does
not comply with resistance table.
1.Replace sensor if resistance does
not comply with resistance table.
2.Check and eliminate short circuit.
3.Replace PCB.
1.Insert new fuse(s) and observe
ASU. If fuse(s) blows again, check
for a short circuit in heater.
2.Replace hopper if element’s re-
sistance does not comply with re-
sistance table. Note: remove wires
from both heater elements when
measuring.
3.Check and repair (see wiring dia-
gram).
4.Replace PCB.
Heater
25 Ohms
25 Ohms
ON