8 Maintenance
Study the instructions carefully.
Handle scrap correctly.
Always keep spare X-rings in stock.
8.3
Dismantling and assembly of Series 700 valves
Step 1
1. Remove the cover by loosening the four cover screws.
2. Separate the adapter from the base by loosening the three
recess screws on top of the base.
Installation on air actuators:
TD 800-250
Step 2
1. Fit air fittings on actuator.
2. Position packing retainer in recess on actuator top.
3. Fit counter nut and indicator (magnet) on actuator rod. Engage
approx. ¼” thread. Tighten counter nut and indicator with two
wrenches.
Step 3
1. Place the two O-rings in the grooves in the bottom of the
adapter. Then place the adapter on the actuator top. The small
O-ring must be positioned over the air hole on the actuator.
2. Fasten the adapter with the four 5/16” Allen screws.
Step 4
1. Mount the base on the adapter in the position needed (can be
rotated 120° in both directions). Note that one of the screw
towers on the adapter has a guide recess (see * on drawing).
2. Remove x-rings (9) (grey) and (16) (black).
3. Replace with new ones.
CAUTION! Do NOT twist the X-ring in the groove! The X-ring is
not square; The highest (h) part must be placed as fig.
TD 800-251
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