August 2008
95-03076
Page 17
Waukesha Cherry-Burrell
Maintenance
Seat Lifting Adjustment
Seat lifting models are factory set. A line on the stem in the yoke area provides a
visual indication of the correct adjustment. If required, adjust the seat lift to fac-
tory settings or within the adjustment zone.
NOTE:
Always adjust the lower seat first.
Lower seat
Operate the lower seat lift cycle. Observe the indicator stem movement at the top
of the valve or at the balancer on the bottom of the valve. The proper movement
is 0.28" (7.1 mm).
To adjust the movement of the lower seat for cleaning, use a spanner wrench to
rotate the adjusting sleeve in the yoke (Figure 13, item B): Left to increase; right
to decrease.
Upper seat
Operate the upper lift cycle once. Operate it three more times to observe the outer
stem movement by watching the adjusting nut in the yoke. The proper movement
is 0.12" (3 mm).
To adjust the movement of the upper seat, use a 1/4" pin to rotate the adjusting
nut (Figure 13, item A): Left to increase; right to decrease.
Removing Valve from System
WARNING:
Before removing the actuator/valve stem assembly from the
valve body, drain all product lines connected to the body.
1. Clean, rinse, and drain the pipe system elements attached to the valve.
Remove or block the fluid and gas lines to prevent material from entering the
pipe system elements attached to the valve. If present, disconnect the flush
water supply connection.
NOTE:
If the valve has a control module
with solenoid, air and electric must remain
ON until the valve is properly disassembled.
2. Shut off delivery of the control air unless required for removal of the valve
stem/actuator assembly of the body.
3. Disconnect the electrical supply and lock out all power.
.
4. Supply air to open the valve.
5. Remove the clamp between the yoke and adapter (Figure 14, item A).
6. Remove the air pressure to cycle the valve closed, lifting the valve approxi-
mately
3/8" (9.5 mm) out of the body.
7. Lift the complete valve actuator and stems out of the valve body.
8. Move the valve to a work station.
Figure 13 - Location of Adjusting Nut
Figure 14 - Location of Adapter Clamp