— 31 —
STANDARD OVEN PILOT SAFETY VALVE CHECK,
REPLACEMENT (Cont.)
Fig. 37
5.
If the millivolt reading is below 5 MV, replace the thermocouple.
6.
If the MV reading is within tolerance, the safety valve should be replaced.
SAFETY VALVE REPLACEMENT PROCEDURES
TOOLS REQUIRED:
7
/
16
" open end wrench,
11
/
16
" open wrench, and
3
/
8
" open end wrench.
1.
Disconnect unit from main gas supply.
2.
Disconnect thermocouple from safety valve (Fig. 38).
Fig. 38
