Maintenance
LT5
82
Hauser
9.3
Replacement of o-ring in the transmitter (LT5-4/
LT5-6)
If gas begins leaking from the gauge head, o-rings must be replaced. The following steps
must be performed carefully due to the tank being under pressure from within.
Replacement procedure
1. Close the gate valve at the top of the tank.
2. Gradually release all remaining pressure in the pipe and inside LT.
3. Remove all attached disks.
4. Remove the transmitter if attached.
5. Remove the coupling on the LT side. Remove the gland using the included gland
fixing tool and remove the two o-rings.
6. Inspect the other components. Replace o-rings and other worn items as necessary.
7. Replace the o-rings and then tighten the gland. Reassemble the unit by following the
above instructions in reverse order.
8. Open the gate valve gradually.
Opening the gate valve abruptly will release a sudden burst of air from the
system, which may result in damage to the measuring tape.
This completes the replacement process.
A
B
1
2
2
3
A0041247
65
O-ring replacement
A
Before tightening
B
After tightening
1
O-ring
2
Gland
3
Gland fixing tool
