A.R.I. D-070 EN - Manual (Page 3)

A.R.I. FLOW CONTROL ACCESSORIES Ltd.
www.arivalves.com [email protected] Tel: 972-4-6761899
MAINTENANCE INSTRUCTIONS D-070
EnM-D070-10
PROBLEM REASON SOLUTION
1. Leaking from
the DRAIN
PORT #1(2). Debris or scale
build-up on the
Rolling Seal (2). 1. Shut off the isolating valve on the riser below the air valve . Unscrew the
Operating Valve Body (1).
2. Remove the Clamping Stem (3) and the Operating Assembly (4). Wash the
inside of the body, the Clamping Stem, the Operating Assembly, the Rolling
Seal (2), and the O-ring (6) with clean water.
3. Gently wash and clean the sealing area inside the valve body.
4. Check the O-ring (6) visually for any defects. Replace if needed .
5. Check and make sure that the Rolling Seal (2) is intact (not torn or cracked)
and is positioned precisely in the middle of its groove in the Operating
Assembly. Replace if needed. The disc at the bottom of the Operating
Assembly (Fig 4) should be loose and move freely.
Do not tighten the holding screw.
2.1. Leaking
from the DRAIN
PORT #2 (2). Debris or
unwanted object
caught in the
Diaphragm
Assembly (9). 1. Shut off the isolating valve on the riser below the air valve .
2. Unscrew the bolts (8) (with the aid of 2 hex keys, size 19 mm) that connect
the main valve cover (7) to its body (10).
3. Remove the Air & Vacuum Sealing Assembly (9) from the body .
4. Wash the Body (10) and the Cover (7) in clean water in order to remove
coarse grime or accumulated scale.
5. Wash the Air & Vacuum Sealing Assembly (9) and check the rubber parts
for any tears .
6. Make sure that the Drill Hole (D-070 sizes 3", 4") is clean and the passage
(D-070 all sizes) is open.
7. Make sure the lower sealing assembly is intact and not torn.
8. Replace the whole Air & Vacuum Sealing Assembly (9) if any of the above
parts are torn or damaged .
9. Do not open screws of the assembly under any circumstances.
10. Make sure that there is no dirt or debris around the sealing area of the
dynamic valve body.
11. Replace the assembly in the body, reassemble in reverse order, then fasten
and tighten all bolts .
12. Open the isolating valve beneath the air valve, making sure that there are no
leaks.
2.2. Leaking
from the DRAIN
PORT #2 (2). Torn Sealing
Assembly (Fig 5)
or Diaphragm (9).
TROUBLESHOOTING GUIDE