TM 10-6640-238-13 3-9 Table 3-2.  Troubleshooting - continued MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 28. HIGH PRESSURE BOILER FAILS TO RAISE THE STEAM SUPPLIED BY THE LOW PRESSURE BOILER TO THE DESIRED TEMPERATURE, WITH CORRECT VALVE LINEUP AND LOW PRESSURE BOILER OPERATING. Step 1.    Check position of gum bath AUX switch. Place switch ON. Step 2.    Check and reset MAIN POWER PANEL circuit breaker A1CB19. Step 3.    Check position of high pressure boiler thermostat control. If boiler still fails to operate properly, notify unit maintenance. 29. LOW PRESSURE BOILER FAILS TO PROVIDE STEAM TO HIGH PRESSURE BOILER. Step 1.    Check boiler ON/OFF switch in ON position. Step 2.    Check valve lineup. Open water feed valve, and close boiler drain valve. Step 3.    Check and reset POWER PANEL NO. 2 circuit breaker A15CB5. If low pressure boiler still fails to operate, notify unit maintenance. 30. GUM BATH/FUME HOOD EXHAUST BLOWER(S) FAIL TO OPERATE. Step 1.    Check operation of blower GFI switch(es). Reset GFI switch. Step 2.    Check exhaust door is open. Step 3.    Check and reset POWER PANEL NO. 2 circuit breaker A15CB11. If exhaust blower(s) still does not operate, notify unit maintenance. 31. REID VAPOR PRESSURE BATH FAILS TO OPERATE, STIRRER MOTOR WILL NOT RUN AND PILOT LIGHT FAILS TO ILLUMINATE. Step 1.    Check operation of line switch. Reset switch ON. Step 2.    Check and reset MAIN POWER PANEL circuit breaker A1CB16. If RVP bath still fails to operate, notify unit maintenance. 32. MANOMETER GIVES NO PRESSURE READING. Step 1.    Check to see if pressure is being supplied to either or both sides of the instrument. Step 2.    Check for plugged or leaking pressure lines.  Make applicable corrections. Step 3.    Inspect atmosphere pressure connection for proper venting to atmosphere. a.   Make applicable correction to ensure proper venting.