AEC VacTrac Series Conveying Systems - Manual (Page 95)

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 the two (2) plunger support disks and a new plunger on the air cylinder shaft.
4. Thread the locknut back on the air cylinder shaft.
5. Place a new gasket on the end plate; secure the end plate and valve body using six (6)
socket cap screws.
6. Reconnect the lower cap to the air cylinder using two (2) socket cap screws and a
new O-ring.
Reinstalling Lower Valves
1. Replace the O-ring in the valve body.
2. Position the valve back on the vacuum power unit. Tighten the set screws that secure
the valve to the blower outlet.
3. Insert the silencer into the valve body, and bolt it to the base at the bracket. Screw the
vertical silencer back on.
4. Reconnect the compressed air line to the valve.
5. Reconnect the valve to the T-Y tube using the radiator hose and hose clamps. Tighten
the hose clamps.
Maintaining Vacuum Receivers and Filter/ Receiver Combinations
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Clean the vacuum receiver filter cartridges as needed. Blow clean with compressed air.
Blow out from the inside for best results. If the screen becomes bent or warped, or the
gasket becomes worn, replace it to prevent material carry-over to the VFC filter
chamber.
Clean and inspect the gasket. Replace it if it is worn.
Invert SR Series vacuum hoppers onto their flat covers for easier maintenance.
If the optional SR Series vented internal sequencing valve is installed, make sure you
remove compressed air prior to servicing.
If optional supplemental cloth filter bags are being used, periodically inspect for wear
and fouling. Clean or replace as necessary.
Conveying System Mechanical Components Chapter 5: Maintenance 94 of 136