Lincoln Electric LN-25 Service Manual page 69

F-32
GAS SOLENOID VALVE AND/OR SOLENOID PC BOARD
FIGURE F.18 Ð SOLENOID ASSEMBL Y WIRING (CODES 9812 AND BELOW).
4. For codes 9812 and below , remove
the two solenoid leads from the
solenoid PC board and disconnect the
purge switch leads. See Figure F .18.
Also, remove plug J2 from the control
board. See Figure F .12.
5. Remove the gas hose from the gas
solenoid nipple. Remove the brass
fitting connected to the gas solenoid
valve from the outside of the case.
See Figure F .19.
6. Remove the two screws mounting the
gas solenoid and assembly bracket to
the case. Carefully remove the
assembly .
7. Remove the two screws mounting the
gas solenoid valve to the assembly
bracket. Remove the gas solenoid
valve.
8. Remove the two screws mounting the
solenoid PC board to the assembly
bracket. Remove the solenoid PC
board.
TROUBLESHOOTING AND REPAIR
REPLACEMENT (continued)
SOLENOID
PC BOARD
PURGE SWITCH
LEADS
9. Install the replacement solenoid PC
board onto the assembly bracket and
secure with the two mounting screws.
10. Install the replacement gas solenoid
valve onto the assembly bracket and
secure with the two mounting screws.
11. Install the gas solenoid assembly
bracket into the case and secure with
the two mounting screws.
12. Install the gas hose onto the gas
solenoid nipple. Install the brass
fitting into the solenoid valve from the
outside of the case.
13. For codes 10148 and above, install
plug J1 1 onto the solenoid PC board.
Connect the leads to the gas solenoid
valve and purge switch. See Figure
F.17.
LN-25
F-32
SOLENOID
LEADS