Xylem Goulds BF03S Manuel D'installation Et D'utilisateur page 8

NORMAL FLOAT POSITION
WITH CORRECT AIR CUSHION
FLOAT CONTROL VALVE CLOSED.
8
FLOAT IN RAISED POSITION
AIR
WATER LEVEL ABOVE
NORMAL CHAMBER NEEDS AIR.
NORMAL WATER LEVEL
WATER
PROCEDURE FOR REPLACING AIR VOLUME
CONTROL TUBE IF DAMAGED
Slip compression nut and sleeve over end of tube and
insert end of tube all the way in counter bore of fitting.
Then pull tube back about
between end of tube and bottom of counter bore. With
tube in this position, tighten compression nut securely.
CAUTION: Be sure tube is in line with counter bore and
nut is not cross threaded.
AIR VALVE
IN PUMP CASING
SUCTION EFFECT OF WATER PUMP
WHEN RUNNING DRAWS AIR
THROUGH OPEN VALVE HERE.
VALVE STEM DEPRESSED BY
FLOAT ROD EXTENSION (1)
FLOAT CONTROLLED VALVE OPEN
CALIBRATED ORIFICE
AIR PASSES DOWN COPPER TUBE
INTO WATER PUMP THROUGH THE
AIR VALVE AND THEN INTO TANK
WITH THE WATER
VALVE ASSEMBLY
ON AIR VOLUME
CONTROL
AIR VALVE (2)
COPPER TUBING
⁄ " so there is a space
1
1 6
VALVE IS OPENED
BY DEPRESSING
THIS STEM.
VALVE SEAT
VALVE IS SHOWN IN
CLOSED POSITION.
CALIBRATED ORIFICE
⁄ "
1
1 6
3 ⁄ " O.D.
1 6
Figure 5