Idex HALE MIV 2.0, Operation, Installation, And Maintenance Manual, Page: 29 / 59

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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.
PER NFPA 1962 REQUIREMENTS, LARGE DIAMETER HOSE MARKED “SUPPLY HOSE”
SHALL NOT BE USED AT OPERATING PRESSURES EXCEEDING 185 PSI (13 BAR).
THE SUCTION OF EACH RECEIVING PUMPER USING LARGE DIAMETER HOSE SHALL BE
EQUIPPED WITH A RELIEF VALVE WITH A MAXIMUM PRESSURE SETTING OF NOT MORE
THAN 10 PSI (0.7 BAR) OVER THE STATIC PRESSURE OF THE WATER SOURCE TO
WHICH IT IS CONNECTED OR NOT MORE THAN 10 PSI (0.7 BAR) OVER THE DISCHARGE
PRESSURE OF A SUPPLY PUMPER IN RELAY. IN NO EVENT WILL THE INTAKE RELIEF
VALVE PRESSURE SETTING EXCEED THE WORKING PRESSURE OF THE HOSE BEING
USED.
WHEN INITIALLY CHARGING LARGE DIAMETER HOSE EXCESSIVE AIR WILL BE PRESENT
IN THE HOSE. THIS AIR MUST BE BLED OFF WHILE THE HOSE IS CHARGING AND PRIOR
TO OPENING THE HALE MIV TO PREVENT RECEIVING PUMP CAVITATION AND POSSIBLE
LOSS OF PRIME.
LARGE DIAMETER HOSE PRESENTS A TRIPPING HAZARD. USE CARE WHEN WORKING
AROUND HOSE WHEN IN USE.
2.5.1 Air Bleeder Valve
1.
Using standard departmental operating procedures connect large diameter hose from the
supply pumper to the receiving pumper.
2.
Make sure the Hale MIV on the receiving pumper is in the CLOSED position.
3.
Open air bleeder valve by turning the valve handle ¼ turn counterclockwise to the OPEN
position (See figure 8).
4.
Have supply pumper energize the large diameter hose and observe the air bleeder dis-
charge tube end. When water flows from the air bleeder discharge tube end, close the air
bleeder valve by turning the valve handle ¼ turn clockwise to the CLOSED position.
5.
Operate the Hale MIV using the procedures that follow.
2.5.2 Electric Motor Operated Valve (HALE MIV-E)
NOTE
AS THE VALVE IS TRAVERSING FROM THE CLOSED TO OPEN POSITION (OR OPEN TO
CLOSED POSITION) THE YELLOW LAMP WILL BE ILLUMINATED.