Return to Section TOC
Return to Section TOC
Return to Section TOC
Return to Master TOC
Return to Master TOC
Return to Master TOC
TROUBLESHOOTING & REPAIR
SCR BRIDGE ASSEMBLY REMOVAL AND REPLACEMENT (continued)
FIGURE F.11 – RECEPTACLE/CIRCUIT BREAKER LEADS
CASE BACK | CASE BACK SCREW |
SCREW |
|
CASE |
BACK |
CIRCUIT |
BREAKER |
RECEPTACLE |
PROCEDURE |
NOTE: “Left” and “right” are from the rear of the | 2. Using the 3/8” nut driver, remove the case |
machine looking in. | sides and top. |
1. Remove input power to the TIG 275 machine. | 3. Using the 3/8” nut driver, remove the nine |
| screws from the case back. |
FIGURE F.12 – FAN MOTOR BRACKET ASSEMBLY MOUNTING | |
| FAN |
| MOTOR |
| BRACKET |
| ASSEMBLY |
| MOUNTING |
| SCREWS |
| (3) |
Return to Section TOC
Return to Master TOC
4.Carefully remove the case back and set aside. NOTE: The receptacle and circuit breaker leads will still be attached. See Figure F.11.
5.With the 3/8” nut driver, remove the three screws mounting the fan motor bracket assembly to the internal glastic divider panel. See Figure F.12.
INTERNAL
GLASTIC
DIVIDER
6.Carefully pull the fan assembly away to allow access to the SCR Bridge Assembly. Support the fan assembly so as not to stress the fan motor leads. It is not necessary to disconnect the fan motor leads.
