Nordson 2302 - Page 72

6-14
Troubleshooting
12. Tank, hose or gun
fails to heat or mderheats
(cmh”4?d)
Problem
la. Hose and
gun not’
heating
(units with circuit
board
P/N 276 881
through 276 888)
Ib. Hose 1 and
hose 2 not
heating
or
Gun 1 and
gun 2 not
heating
(units with circuit
board
P/N 276 884
through 276 888)
5a. Hose or gun
not he&g
(units with circuit
board
P/N 276 881
through 276 888)
5b. Hose or gun
not he%g
(units with circuit
board
P/N 276 889 or
276 890)
Possible Reason
Failed circuit board fuse(s)
To check:
Remove fuse for nonheating gun and
hose (see schematic) and check for
continuity.
If fuse OK, reinstall and go to step 10
or 12 of this procedure
Failed circuit board fuse(s)
To check:
Remove fuse for nonheating gun or
hose pair (see schematic) and check
for continuity.
If fuse OK, reinstall and go to step 10
or 12 of this procedure
Failed circuit board fuse(s)
To check:
Remove fuse(s) for nonheating gun or
hose (see schematic) and check for
continuity.
If fuse(s) OK, reinstall and go to step
12 of this procedure
Failed inline fuse
To check:
Remove fuse for nonheating gun or
hose (see Figure 6.7) and check for -
continuity.
If fuse OK, reinstall and go to steps
10, 11 and 12 of this procedure -
Figure 6.7 - Hose and Gun Mine Fuse
Locations:
1 = Line No. 2 (Guns)
2 = Fuse Holders
3 = Line No. 4 (Hoses)
4 = Circuit Board Plug
Corrective Action
Replace failed fuse(s), then go to
step 12 of this procedure (check
heater and heater-to-ground)
Replace failed fuse(s), then go to
step 12 of this procedure (check
heater and heater-to-ground)
Replace failed fuse(s), then go to
step 12 of this procedure (check
heater and heater-to-ground)
Replace failed fuse, then go to step
12 of this procedure (check heater
and heater-to-ground)
Refer to
f’M 106 701A
41-23OQSP - l&4
63 Nordson Corporation 1994
All Rights Reserved