Nordson 2302 - Page 76

6-18
Troubleshooting
12. Tank, hose orgun
fails to heat or underheats
(continue@
Figure 6.11-
Connector JIB - J5B.
Problem
Possible Reason
Corrective Action
Refer to
0. Hose and
Failed hose
Replace hose
gun OR
To check (Figure 6.9):
Gun alone not (a) Disconnect hose plug (nonheating
heating;
gun) from applicator
yellow LED
(b) Abnormal resistance reading
*
off, red LED
(power off!) between hose plug pins 3
on
and 5 (RTD) at connector JlA - J5A
Normal = 133 ohms at 70°F (21 “C) to
309 ohms at 400°F (205°C)
AND
(a) Disconnect gun plug (nonheating
gun) from hose
(b) Normal resistance reading (power
off!) between hose plug pins 3 and 5
(RTD) at connector Jl B - J5B (Figure
6.11)
Failed RTD or wiring Replace RTD, repair wiring as
Section 7,
To check (Figure 6.9): required
Section 6
(a) Disconnect hose plug (nonheating
(wiring
gun) from applicator
.
diagrams)
(b) Abnormal resistance reading
(power off!) between hose plug pins 3
and 5 (RTD) at connector JlA - J5A
Normal = 133 ohms at 70°F (21 “C) to
309 ohms at 400°F (205°C)
AND
(a) Disconnect gun plug (nonheating
gun) from hose
(b) Abnormal resistance reading
(power off!) between hose plug pins 3
and 5 (RTD) at connector JlB - J5B
(Figure 6.11)
f=N 106 701A
41-2300SP - l/9.4
0 Nordson Corporation 1994
All Rights Resawed