Hale Master Intake Valve - Manual (Page 20)

18
M
ASTER
I
NTAKE
V
ALVE
2. To open valve, push toggle switch
(figure 8 A) to the OPEN position and
hold until the green OPEN indicator
lights. If apparatus configuration
permits, observe the manual override
handwheel on the operator panel to
make sure the valve is turning. Release
the switch.
3. To close valve, push toggle switch to the
CLOSED position and hold until the red
CLOSED indicator lights. If apparatus
configuration permits, observe the
manual override handwheel on the
operator panel to make sure the valve is
turning. Release the switch.
MANUAL HANDWHEEL OPERATED
VALVE (HALE MIV-M)
NOTE: As the valve is traversing from the
CLOSED to OPEN position (or OPEN to
CLOSED position) the yellow lamp will be
illuminated.
1. To open the valve, turn handwheel
(figure 8 C) in the direction indicated by
the arrow on the panel placard until the
green OPEN indicator lights.
2. To close the valve, turn handwheel in
the direction indicated by the arrow on
the panel placard until the red CLOSED
indicator lights.
MANUAL OVERRIDE (Electric Operated
Valve Only)
The electric motor operated valve has a
panel mounted handwheel to open or
close the valve in the event power is not
available from the apparatus electrical
system. To operate the valve in the event
of apparatus electrical power failure use
the following procedures:
1. To open the valve, turn handwheel
(figure 8 B) in the direction indicated by
the arrow on the panel placard until the
handwheel stops.
2. To close the valve, turn handwheel in
the direction indicated by the arrow on
the panel placard until the handwheel
stops.
COLD WEATHER OPERATION
During extremely cold weather the pump
and Hale MIV must be completely drained
to prevent ice formation and possible
damage. During cold weather operation
use the following procedure for continued
reliable operation.
1. Immediately after completion of
operations drain and disconnect the
large diameter hose. Open all
apparatus suction valves, discharge
valves, Hale MIV and drain valves.
Remove the suction tube caps. Permit
water to drain completely from the
pump and piping.
2. After pump is completely drained
replace all caps and close all valves.
The Hale MIV should be kept in the
closed position during cold weather.
WARNING: When the electric motor
driven valve is operated the manual
override handwheel will turn. Keep
hands, feet or loose clothing away from
the handwheel to prevent
entanglement.
3. If, during cold weather the formation of
ice in the pump suction tube prevents
normal opening of the Hale MIV-E, the
valve disc may be freed by repeatedly
moving the toggle switch (figure 8 A) on
the operator panel from OPEN to
CLOSED position jogging the valve disc
to release the ice. Repeat movement of
the toggle switch as many times as
necessary to break the disc free.
Observe the manual override
handwheel to determine when disc is
free and valve is operating.