Vacuum Valve Maintenance; Vent Valve Greasing Procedure; Vacuum Valve Greasing Procedure - Promax TC-350 Operation Manual

b. Replace if broken or burnt badly. Refer to the instructions under B
below for replacement
5. Install the new Teflon cover and reinstall the seal bars.
B. Replacing the Seal Element
1. Using a hex wrench loosen the screws holding the seal element and remove it
2. Install the new seal element. Refer to Figures B & C on the next page.
a. Place the new element across the surface of the seal bar leave an excess of
about 3/4" at
each end.
b. Make sure you put the tension spring back in place.
4.4 V A C U U M VALVE MAINTENACE

4.4.1 VENT VALVE GREASING PROCEDURE

1. First, remove the inner snap ring.
2. Second , you can remove the valve piston.
3.Third , put a small amount of grease on the o-ring and reassemble(FIG1).

4.4.2 VACUUM VALVE GREASING PROCEDURE

1.First , remove the four hex nuts(FIG2 A).
2.Second , apply small amount of grease to o-ring(FIG2 B).
3.Next , apply small amount of grease to inside well of piston housing(FIG2 C).
Re-assembly
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