ITW Dynatec DYNAMELT D15 Series, Technical Documentation Manual

Page: 157 / 234

ITW Dynatec
D SERIES V6 DCL ASU Manuals
Troubleshooting Page 7-23
Revised 10/14
Problem Possible Cause
Hose/ Head 1. Hose/ Head tolerance (hi/
(No.) Overtemp low limits) incorrectly
programmed.
2. Hose/ Head triac on
Power or AUX Module is
inoperative.
3. Disconnection between
Power and/ or AUX Power
Module and the Tempera-.
ture Module.
4. Hose/ Head sensor circuit
inoperative.
Plug
Sensor
Heater
Sensor &
Heater
ASU Socket and
Hose Plug
Solution
1. Re-program tolerance setpoint to allow
a larger deviation.
2.If a hose or head status LED on the
Temperature Module is OFF, and the
corresponding temperature continues
to rise, the corresponding triac on its
Power Module has failed. The module
must be replaced.
3. Verify that Power and AUX Power
Module are properly connected to the
Temperature Module.
4. a. Visually examine hose/ head
socket connections. Verify that pins
are properly seated. If pins or plug
housings are damaged, repair or replace
hose. If socket is damaged, repair
or replace harness.
b. If hose-to-ASU plug and socket are
okay, hose may have intermittent short
or open circuit. Repair or replace hose,
hose harness, Power Module or Aux
Power Module as appropriate.
Alternately, problem can be isolated by
connecting the affected hose to a
different ASU hose socket to tell
whether the problem is in the hose or
in the Power or Aux Power Module.
c. If head-to-hose and hose-to-ASU
plugs and sockets are okay, head
sensor may have an intermittent short
or open circuit. Examine connections
inside the service block area of the head
and monitor head sensor resistance
with an ohmmeter while flexing sensor
leads. Repair or replace an inoperative
sensor.