Table 3-1. Operator Troubleshooting Procedures (Con't).
TEST OR INSPECTION
16. EMERGENCY VALVE DOES NOT CLOSE WITHIN TWO MINUTES OF START OF PRECHECK
While bottom loading, check pressure gage in cabinet for a low reading (see para-
is less than 5-10 psi (34-69 kPa), fuel flow rate
generated by pump is too low; precheck system will not function.
Increase fuel flow rate or pressure generated by pump.
If malfunction persists, close precheck valve (see paragraph 2-2). Bottom load
manually with an observer stationed at manhole opening to gage fuel level (see
17. EMERGENCY VALVE DOES NOT OPEN TO ALLOW BOTTOM LOADING AFTER PRECHECK
High pressure, high flow rates, low temperatures, or a combination of these
three factors, can cause emergency valve not to open again after precheck
valve has been closed. Performance of step 2 should correct the problem.
Shut down pumping operation for 10-15 seconds, then resume. DO NOT activate the
Emergency valve should open, allowing bottom loading to resume. If emergen-
cy valve does not open, notify unit maintenance.