Primary Heaters (A And B) - Graco Reactor E-20 Series Manual

Primary Heaters (A and B)

Before performing any troubleshooting procedures:
1. Relieve pressure, page 26.
PROBLEM
Primary heater(s) does not heat.
Control of primary heat is abnormal;
high temperature overshoots or E01
error occurs intermittently.
312066ZAD
2. Turn main power OFF
3. 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.
Dirty thermocouple connections.
Thermocouple not contacting heater
element.
Failed heater element.
Signal failure from thermocouple.
Thermocouple wired incorrectly.
Troubleshooting
.
SOLUTION
A
B
Press or zone
keys.
Check temperature display for diag-
nostic code, page 11.
See E04: Fluid Temperature Sen-
sor (FTS) or thermocouple discon-
nected, page 13.
Examine connection of thermocou-
ples 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.
Loosen ferrule nut (N), push in ther-
mocouple (310) so tip (T) contacts
heater element (307). Holding themo-
couple tip (T) against heater element,
tighten ferrule nut (N) 1/4 turn past
tight. See page 44 for illustration.
See Primary Heaters, page 23.
See E04: Fluid Temperature Sen-
sor (FTS) or thermocouple discon-
nected, page 13.
See E04: Fluid Temperature Sen-
sor (FTS) or thermocouple discon-
nected, page 13. Power up zones
one at a time and verify that tempera-
ture for each zone rises.
23