Dungs FRM-NOC 100025 HD, Instruction Manual, Page: 42 / 76

42 … 76
MC • Edition 2022.08 • No
. 279 663 R
ev
. -0
Pos. Designation
1 Shut-off valve, inlet side
2 Filter
3 Pressure gauge with pushbutton cock
4 Venting ball valve
5 Regulator with SAV integrated
6 SBV with shut-off valve
Pos. Designation
7 Pressure gauge with pushbutton cock
8 Venting ball valve
9 Test burner
10 Shut-off valve, outlet side
11 Hose
12.5 Recommissioning
12.6 Decommissioning
1. Slowly close the shut-off valve on the outlet side.
2. Slowly close the shut-off valve on the inlet side.
3. Release gas in the test section in a controlled and safe
manner into the atmosphere.
13. Faults and their causes
Fault in the SAV Possible causes Troubleshooting
The SAV cannot be
opened/unlocked
The pulse line is not connected.* Install the pulse line.
The pulse line is clogged.* Clean the pulse line.
The pulse line has leaks.* Seal the pulse line.
The pulse line is damaged.* Replace the pulse line.
The pulse pressure is outside the adjustment range.
Adjust the locking pressure of the SAV or the
outlet pressure.
The adjusting springs are not suitable for the application. Replace the adjusting spring.
The adjustment range of the SAV is outside the outlet pressure. Replace the SAV or the ASE.
The SAV does not switch
or does not respond.
The pulse line is not connected.* Connect/install the pulse line.
The pulse line is clogged.* Clean the pulse line.
The pulse line has leaks.* Seal the pulse line-
The pulse line is damaged.* Replace the pulse line.
The pulse pressure is outside the adjustment range. Adjust the locking pressure of the SAV.
The adjustment springs are not suitable for the application. Replace the adjusting spring.
The SAV switches, but
does not seal.
The valve head is damaged or worn. Replace the ASE or have it repaired by DUNGS.
The seat of the valve is damaged. Replace the valve seat.
The movable parts are contaminated with foreign particles. Clean the movable parts or replace the ASE.
The drive is damaged. Replace the ASE.
The O-Ring is damaged. Replace the O-Ring or the ASE.
The SAV is leaking towards
the atmosphere.
The working diaphragm is damaged.
Change the working diaphragm or replace
the ASE.
The sealing ring between ASE and housing of the SAV is damaged. Replace the ring or the ASE.
The O-Ring junta on the ASE is damaged. Replace the O-Ring or the ASE.
• Repair work on the device must only be performed by authorised and skilled personnel.
• Use only original spare parts.
1. Close the shutoff valve upstream of the bypass line.
2. Remove the hose.
3. Open the ball valve upstream of SBV, if installed.
4. Reset SAV, see section 12.4.
5. Once SAV has been reset, open the shutoff valve on the
outlet side of the SAV.