Graco Reactor E-20 FP9030 [23/76] Hose heat system

Graco Reactor E-20 FP9030 [23/76] Hose heat system
Troubleshooting
312066ZAF 23
Hose Heat System
Before performing any troubleshooting procedures:
1. Perform the Pressure Relief Procedure, page 25.
2. Turn main power OFF .
3. Allow equipment to cool.
Problems
Try the recommended solutions in the order given for
each problem, to avoid unnecessary repairs. Also,
determine that all circuit breakers, switches, and
controls are properly set and wiring is correct before
assuming there is a problem.
PROBLEM CAUSE SOLUTION
Hose heats but heats slower
than usual or it does not reach
temperature.
Ambient temperature is too cold. Use auxiliary hose heat system.
FTS failed or not installed correctly. Check FTS, page 12.
Low supply voltage. Verify line voltage. Low line voltage
significantly reduces power available to
hose heat system, affecting longer hose
lengths.
Hose does not maintain
temperature while spraying.
A and B setpoints too low. Increase A and B setpoints. Hose is
designed to maintain temperature, not to
increase it.
Ambient temperature is too cold. Increase A and B 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, affecting longer hose
lengths.
Hose temperature exceeds
setpoint.
A and/or B heaters are overheating
material.
Check primary heaters for either a
thermocouple problem or a failed element
attached to thermocouple, page 12.
Faulty thermocouple connections. Verify that all FTS connections are snug
and that pins of connectors 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.
Missing/damaged insulation around
FTS, causing the hose heat to be ON
constantly.
Ensure hose bundle has adequate
insulation evenly covering the entire
length and connection joints.

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