AEC VacTrac Series Conveying Systems - Manual (Page 92)

Page 92 VacTrac™ Series Conveying Systems
WH2-605A.4 Mechanical Components
3. Loosen the hose clamps that connect the valve to the T-Y
tube, and slide the hose back. On units with optional sound
enclosures, loosen the hose clamps between the discharge
silencer and the U-bend.
4. Remove the screws holding the discharge silencer to the
base of the vacuum power unit, and take off the discharge
silencer. On units with optional sound enclosures, remove
the screws securing the U-bend to the base, and pull the
silencer out of the body of the lower valve.
5. Loosen the set screws holding the lower valve to the blower
outlet, and remove the valve from the power unit.
Disassembling Lower Valves
1. Remove the pipe nipple and pipe coupler from the lower
cap.
2. Remove the two (2) socket cap screws from the lower cap.
3. Remove the lower cap from the machined body.
4. Remove the six (6) socket cap screws from the end plate.
Separate the end plate from the machined body.
5. Remove the cotter pin from the plunger. Unscrew the
plunger from the air cylinder shaft.
6. Remove the four (4) socket cap screws holding the air
cylinder to the end plate.
Servicing and Reassembling Lower Valves
1. Clamp the air cylinder in a vise and unscrew the end cap.
Using parts from the valve service kit, replace the seals in
the air cylinder. Screw the end cap back on.
2. Secure the air cylinder to the end plate using the four (4)
socket cap screws.
3. Screw a new plunger on the air cylinder shaft; secure it
with the cotter pin.
4. Place a new gasket on the end plate; secure the end plate to
the machined body using six (6) socket cap screws.
5. Fasten the lower cap to the air cylinder using two (2) socket
cap screws, a new gasket, and a new O-ring.
6. Screw the pipe nipple and coupler back into place.