Table of Contents vii
3.
TroubleshootingTables
Electrical
Safety
During
Troubleshooting
B 2-4
B 2-5
B2-5
B2-6
B2-7
B 2-7
B 2-8
B2-8
B 2-10
B 2-11
B2-12
B2-14
B 2-15
B 2-17
B 2-18
B 2-19
B 2-19
Opening and
Closing the Electrical Enclosure
Opening
Closing
lnternal, Hose,
or
Gun
Zone Not Heating . . . .
Settings Changed or Lost
Unit Not Powering
On ..
Control System lndicating
a Warning
Out-of-BandWarning
:.....
Under-Temperature
(UT)
Warning . . . . . . .
ControlSystem lndicating
a Fault
Over-Temperature
(OT)
Fault
Resistance
Temperature Detector
(RTD)
Fault
Fault-Code
Fault
(F1
-F7)
4. Troubleshooting
Procedures
.
Checking the POWER
Switch
Checkin Distribution
Board Harnesses
and the
Checking a Heater or Heater
Circuit
Checking aThermostat ....
Checking an RTD or RTD
Circuit
. ..
B2-20
B2-22
B2-24
B 2-25
B2-29
B2-29
B2-32
B2-32
B2-32
B 2-33
B2-34
B 2-35
B 2-36
B 2-36
B 2-36
B 2-36
B 2-37
B 2-38
B 2-39
B 2-39
B 2-41
B2-41
B 2-42
B2-42
B 2-44
5.
Repair Procedures
. . .
ReplacingaFuse..
Replacing
a
ControlAssembly Board
Preparation
for Removal
Power
Board Removal
Power Board
lnstallation
Control Board
Removal
Control Board lnstallation
Display Board
Removal .. ..
Display
Board lnstallation
System Restoration
Replacing
the
Operator Panel . . . .
OperatorPanel
Removal ......
Operator Panel lnstallation .. ...
Replacing
the
Control
Assembly
. .
ControlAssembly Removal
.
...
ControlAssembly lnstallation
. .
Replacing
a
Unit-Specific Board ..
Replacing
an FITD or a Thermostat
RTD
or
Thermostat
Removal
RTD or Thermostat
lnstallation
@ 2000 Nordson
Corporation
All rights reserved
4'l-3000v
lssued
5/00
ol EN{4-[3V-TOCI-127