3
THE PROCEDURES IN THIS SECTION PROVIDE ONLY GENERAL AND MINIMAL INSTRUC-
TION. DO NOT REPLACE LOCAL PROCEDURES OR POLICIES OR RECOMMENDATIONS
AND PROCEDURES PROVIDED IN THE APPARATUS/TRUCK/UNIT MANUAL WITH THESE
PROCEDURES.
THE PROCEDURES IN THIS SECTION ARE GENERAL OPERATING PROCEDURES BASED
ONLY ON HALE EQUIPMENT. NOT ALL PROCEDURES IN THIS SECTION MAY APPLY TO
YOUR SPECIFIC OPERATIONAL REQUIREMENTS OR APPARATUS CONFIGURATION. RE-
FER TO ONLY THE INFORMATION/PROCEDURES WHICH APPLY TO YOUR OPERATIONAL
REQUIREMENTS AND ONLY WHEN LOCAL PROCEDURES, POLICIES, OR GUIDELINES
ESTABLISHED BY THE AHJ DO NOT EXIST.
ALWAYS REFER TO THE PROCEDURES PROVIDED BY THE AHJ FOR SETTING WHEEL
CHOCKS AS WELL AS LAYOUT AND CONNECTION OF HOSES, VALVES AND DRAINS.
PER NFPA 1962 REQUIREMENTS, LARGE DIAMETER HOSE MARKED “SUPPLY HOSE”
SHALL NOT BE USED AT OPERATING PRESSURES EXCEEDING 185 PSI (13 BAR).
NEVER SET INTAKE RELIEF VALVE ABOVE HOSE MANUFACTURERS RATED PRESSURE.
ALWAYS USE THE LOWEST POSSIBLE RELIEF VALVE SETTING TO ENHANCE OPERATOR
AND EQUIPMENT SAFETY.
PER NFPA 1962 REQUIREMENTS, LARGE DIAMETER HOSE USED TO SUPPLY A
PUMPER FROM A HYDRANT, OR ANOTHER PUMPER SHALL BE CONNECTED TO THE
PUMPER(S) AND HYDRANT WITH A SLIGHT DOWNWARD BEND TO AVOID KINKING
WHEN THE WATER IS TURNED ON.
LARGE DIAMETER HOSE PRESENTS A TRIPPING HAZARD. USE CARE WHEN WORKING
AROUND HOSE WHEN IN USE.
MALE THREADS ON RELIEF VALVE OUTLET ARE SHARP AND CAN CAUSE SEVERE CUTS.
BE CAREFUL WHEN WORKING AROUND THE EXPOSED THREADS ON THE RELIEF VALVE
OUTLET.
THE RELIEF VALVE SPRING IS UNDER PRESSURE AND CAN CAUSE A PROJECTILE HAZ-
ARD. WHEN DISASSEMBLING THE RELIEF VALVE, BACK RELIEF VALVE ADJUSTMENT
SCREW OUT TO LOWEST SETTING TO RELIEVE PRESSURE ON SPRING BEFORE REMOV-
ING RELIEF VALVE HOUSING SCREWS.
PER NFPA 1901, USE TUBING RATED AT THE MAXIMUM DISCHARGE PRESSURE OF
THE FIRE PUMP, 500 PSI (34 BAR) MINIMUM.
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