Nordson 2302 - Page 74

6-16
Troubleshooting
12. Tank, hose orgun
fails to heat or underheats
(continue@
Problem
Possible Reason
Corrective Action
Refer to
I. Yellow LED for
Defective wire or contact
Repair/replace defective wiring or
nonheating
To check (power off!, circuit breaker
contact
channel off,
set to Uon”):
red LED off
No continuity on any of circuit breaker
legs Ll, L2 and L3 (European units
Ll , L3 and N) between input terminal
board TBl and circuit board J7
OR
No continuity on any circuit breaker
leg between the input terminal board
TBl and line side of the breaker
OR
No continuity between load side of
circuit breaker (1 A, 2A and 3A) and
circuit board (Ll , L2 and L3 on J7)
Faulty circuit breaker
To check:
Replace circuit breaker
Section 7
Is continuity between load side of
circuit breaker (1 A, 2A and 3A) and
circuit board (Ll, L2 and L3 on J7)
Failed circuit board
To check:
Replace circuit board
Section 7
Is continuity on circuit breaker legs
Ll , L2 and L3 (European units Ll , L3
and N) between input terminal board
TBl and circuit board J7, but unit not
wired for single-phase operation
OR
.
Is continuity on circuit breaker legs
l-1, L2 and L3 (European units Ll, L3
and N) between input terminal board
TBl and circuit board J7, unit is wired
for single-phase operation and jumper
1OJ at J7 shows continuity
Incorrect wiring, failed single-phase
jumper
Repair/replace incorrect
wiringlsinqle-phase jumper
PN 106 701A
41-2300SP - l/94
CD Nordson Corporation 1994
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