10.
Tighten nut to lock adjusting shaft at the desired setting.
11.
All pressure settings are approximate.
12.
Repeat steps 4-6 to test desired pressure settings.
13.
Repeat adjustment procedures as necessary to verify relief valve operation.
14.
Open drain valve and drain water from suction tube.
15.
Disconnect water supply and remove test cap from suction tube.
16.
Close operator panel and return apparatus to normal ready condition.
2.2.9 Rotation of Gearbox (if necessary)
1.
Remove the four 3/8-16 x 2-½ inch long cap screws that hold the gearbox to the gearbox
adapter.
2.
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 GEAR-
BOX. PUSH SHAFT AND THRUST WASHER BACK INTO PLACE, BEING SURE SLOT IN
END OF SHAFT SEATS OVER TANG ON VALVE DISC.
3.
The gearbox may now be rotated in any 90° increment.
4.
Reinstall the gearbox onto the gearbox adapter by lining up square end of shaft with
square bore in gearbox.
5.
Apply Loctite® #243 or equal to four 3/8- 16 x 2-½ inch long cap screws. Tighten cap
screws.
6.
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.
7.
If valve is equipped with an electric gearmotor and the gearmotor is mounted vertically, the
gearmotor cover must have a drain hole added in the bottom. Remove the four #6-32 x
1/2 inch long screws and remove the cover. Drill a 5/16 hole through end of cover and
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