Heaters - Graco Reactor E-10hp Instructions Manual

Troubleshooting

Heaters

Before performing any troubleshooting procedures:
1. Shut off Heater Power.
PROBLEM
Primary heater(s) does not heat.
Control of primary heat is abnormal;
high temperature overshoots or E01
error occurs intermittently.
36
2. Shut off Motor Power.
3. Relieve pressure, page 24.
4. Allow equipment to cool.
Try the recommended solutions in the order given for
each problem, to avoid unnecessary repairs. Also,
determine that all circuit breakers, switches, and con-
trols are properly set and wiring is correct before assum-
ing there is a problem.
CAUSE
Heat turned off.
Temperature control alarm.
Signal failure from thermocouple.
Failed heater element.
Dirty thermocouple connections.
Thermocouple not contacting heater
element.
Failed heater element.
Signal failure from thermocouple.
Thermocouple wired incorrectly.
SOLUTION
Press or zone
keys.
Check temperature display for diag-
nostic code, page 32.
See E04: Thermocouple discon-
nected, page 33.
Check resistance of heater elements.
See Test Heater Element, page 49.
Examine connection of thermocou-
ples to long green plug on heater
control board. Unplug and re-plug
thermocouple wires, cleaning off any
debris. For 100-120VAC, unplug and
re-plug long green connector. For
200-240V, unplug and re-plug green
connector(s) B.
Loosen ferrule nut (N), push in ther-
mocouple (310) so tip (T) contacts
heater element (307). Holding ther-
mocouple tip (T) against heater ele-
ment, tighten ferrule nut (N) 1/4 turn
past tight. See page 50 for illustra-
tion.
See Heaters, page 36.
See E04: Thermocouple discon-
nected, page 33.
See E04: Thermocouple discon-
nected, page 33. Power up zones
one at a time and verify that tempera-
ture for each zone rises.
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