VERDER VA50PAPPSPSPFEOO, Repair Parts

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Repair
8. To ensure proper seating and extend diaphragm
life, apply air pressure to the pump prior to
attaching the second fluid cover.
a. Place the supplied tool (302) where the air
valve gasket (105) normally goes. Arrows
(A) must face toward the fluid cover that is
already attached.
Figure 2 Fluid cover tool
b. Reattach the air valve.
c. Supply a minimum of 1.4 bar (0.14 MPa, 20
psi) air pressure to the air valve. Shop air
may be used. The diaphragm will shift so the
second fluid cover will seat properly. Keep
air pressure on until the second fluid cover
is attached.
d. Attach the second fluid cover (3). See
Torque Instructions, page 19 .
e. Remove the air valve and the tool (302),
replace the gasket (105), and reattach the air
valve. See Torque Instructions, page 19 .
NOTE: If you are replacing the diaphragms
but not the air valve, you must remove the air
valve and gasket, put the tool in place of the
gasket, and put the air valve back on to get
the air pressure needed for proper installation
of the second fluid cover. Remember to
remove the tool and replace the gasket when
finished.
f. Reassemble the ball check valves
and manifolds as explained in
Check Valve Repair, page 14 .
18 859.0302