Troubleshooting
76
313997A
Hose does not maintain tem-
perature while spraying
A and B setpoints too low
Increase A (Red) and B (Blue) setpoints. Hose is
designed to maintain temperature, not to increase it.
Ambient temperature is too cold
Increase A (Red) and B (Blue) setpoints to increase
fluid temperature and keep it steady
Flow too high
Use smaller mix chamber. Decrease pressure.
Hose was not fully preheated
Wait for hose to heat to correct temperature before
spraying
Low supply voltage
Verify line voltage. Low line voltage significantly
reduces power available to hose heat system, affect-
ing longer hose lengths.
Hose temperature exceeds
setpoint
A (Red) and/or B (Blue) primary heat-
ers are overheating material
Check primary heaters for either an RTD problem or a
failed element attached to thermocouple
Faulty RTD connections
Verify that all FTS connections are snug and that pins
of connectors are snug and that pins of connects are
clean. Examine connection of thermocouples to long
green plug on heater control board. Unplug and
re-plug thermocouple wires, cleaning off any debris.
Unplug and re-plug long green connector on heater
control board.
Erratic hose temperature
Faulty thermocouple connection
Verify that all FTS connections are snug and that pins
of connectors are clean. Examine connection of RTD
to long green plug on heater control board. Unplug
and re-plug RTD wires, cleaning off any debris.
Unplug and re-plug long green connector.
FTS not installed correctly
FTS should be installed close to end of hose in same
environment as gun. Verify FTS installation.
Hose does not heat
FTS failed or is not contacting cor-
rectly
Check FTS
FTS not installed correctly
FTS should be installed close to end of hose in same
environment as gun. Verify FTS installation.
Temperature control alarm
See ADM Error Codes with Description, Cause,
and Solution on page 78
Hoses near system are
warm, but hoses down-
stream are cold
Shorted connection or failed hose
heating element
With hose heat on and temperature setpoint above
displayed hose zone temperature, verify voltage
between connectors at each section of hose.
Voltage should drop incrementally for each section of
hose further from the system. Use safety precautions
when hose heat is turned on.
Proportioning System
Proportioning pump does not
hold pressure when stalled
Pump piston or intake valve leaking
1.
Observe gauges to determine which pump is los-
ing pressure.
2.
Determine in which direction the pump has
stalled by observing which directional valve indi-
cator light is on.
3.
Repair the valve.
Problem
Cause
Solution
