TM 10-6640-215-13 Table 3-2.  Troubleshooting - continued MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 31. GUM BATH/FUME HOOD EXHAUST BLOWER(S) FAIL TO OPERATE. Step 1. Check operation of blower GFI switches. Reset GFI switch. Step 2. Check exhaust door open. Step 3. Check and reset circuit breaker A15CB11 located in POWER PANEL NO.  2. If exhaust blower(s) still does not operate, notify unit maintenance. 32. RVP BATH FAILS TO OPERATE (STIRRER MOTOR WILL NOT RUN AND PILOT IGHT FAILS TO COME ON. Step 1. Check operation of line switch. Reset switch ON. Step 2. Check and reset circuit breaker A1CB16 located in MAIN POWER PANEL. If RVP bath still fails to operate, notify unit maintenance. 33. MANOMETER GIVES NO PRESSURE READING. Step 1. Check to see if pressure is not 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. b. If manometer still fails to read pressure, notify unit maintenance. 34. MANOMETER GIVES INACCURATE (HIGH/LOW) PRESSURE READING  . Step 1. Check zero setting. Adjust zero setting if required. 3-11