Hale Master Intake Valve - Manual (Page 17)

15
M
ASTER
I
NTAKE
V
ALVE
4. Open water supply valve and air bleed
valve. Fill suction tube until water flows
from air bleed. Close air bleed.
5. Pressurize to desired set pressure in
accordance with the above warnings.
Observe whether relief valve opens or
remains closed at the desired pressure.
6. Using a 3 /
16
inch allen wrench loosen, BUT
DO NOT REMOVE, the screw that locks
the pressure adjustment cap screw.
7. Using a 7 /
8
inch open end wrench, turn
pressure adjustment cap screw to set
the relief valve pressure (clockwise to
increase opening pressure or
counterclockwise to decrease opening
pressure). Turn cap screw until relief
valve just opens or closes.
8. Once relief valve opens or closes turn
pressure adjustment cap screw ¼ turn in
the clockwise (increase pressure)
direction.
9. Lock the pressure setting by turning the
adjustment locking screw until tight.
Lock screw in place with wicking Loctite
#290 or equivalent.
10. Turn off water source and relieve some
pressure through the air bleeder
allowing relief valve to reset.
11. Reenergize water source and return the
pressure to the relief valve set point to
verify valve opening point. Repeat
adjustment procedures as necessary to
verify relief valve operation.
12. Open drain valve and drain water from
suction tube.
13. Disconnect water supply and remove
test cap from suction tube.
14. Close operator panel and return
apparatus to normal ready condition.
I. ROTATION OF GEARBOX (if necessary)
1. To avoid damage to switch rollers,
manually rotate the valve to the half
open position. (Approximately 5 turns
from either the fully open or fully closed
position.) This will place the switch
sequencing slot of the shaft midway
between both sets of switch rollers.
2. Remove the four 3/8-16 x 2-½ inch long
cap screws that hold the gearbox to the
gearbox adapter.
3. Carefully remove gearbox (MIV-M) or
gearmotor/gearbox assembly (MIV-E)
from gearbox adapter.
NOTE: The shaft and thrust washer (MIV-E
only) may come out with the gearbox.
Push shaft and thrust washer back into
place, being sure slot in end of shaft
seats over tang on valve disc and
sequencing slot is between switch rollers.
4. The gearbox may now be rotated in any
90° increment.
5. Reinstall the gearbox onto the gearbox
adapter by lining up square end of shaft
with square bore in gearbox.
6. Apply Loctite #242 or equal to four 3/8-
16 x 2-½ inch long cap screws. Tighten
cap screws.
7. If valve is equipped with an electric
gearmotor and the gearmotor is
mounted horizontally, the gearmotor
cover must have the drain slots facing
down toward the ground. If the slots are
not facing the ground remove the four
#6-32 x 1/2 inch long screws and remove
the cover.
8. The circuit breaker, mounted on the
gearmotor, should be located on the
upper side of gearmotor. If not, remove
the four #6-32 x 1/2 inch long socket