TLV LA Series, Instruction Manual

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Installation of X-element
Figure A
Figure B
Spring clip
Slot
Slot
X-element
X-element guide
Cover
9. Troubleshooting
If the expected performance is unachievable after installation of the air vent, read chapter 5 and
chapter 6 again and check the following points to take appropriate corrective measures.
No air is
discharged
(blocked) or
discharge is
poor The X-element is stuck to the valve seat
The valve seat is blocked Clean parts
Steam is
discharged or
leaks from
the outlet
(blowing)
(steam leakage)
There is rust or scale between the
X-element valve and valve seat Clean parts
Steam is leaking
from a place other
than the outlet
The X-element is broken Replace with a new X-element
Improper installation Correct the installation
Air vent vibration Lengthen the inlet piping and fasten it securely
Gasket deterioration or damage Replace with a new gasket
Improper tightening torques were
used Tighten to the proper torque
The X-element valve and valve seat
are damaged Replace with a new X-element and/or
cover (LA13L: also the valve seat)
Clean the valve seat, or replace with
a new valve seat (LA13L) or cover
The screen is clogged Clean parts
The air vent operating pressure exceeds
the maximum specified pressure, or
there is insufficient pressure differential
between the air vent inlet and outlet Compare specifications and actual
operating conditions
Cause Remedy Problem
Part & No.
Body 1 /
Cover 2
Cover Gasket 8
(LA13, LA13L) Replace with a new gasket only if worn
or damaged
Spring Clip 7
X-element 3
Valve Seat 4
(LA13L)
X-element Guide 9
(LA13L)
Screen 5
Insert carefully without bending
During Disassembly During Reassembly
Use a wrench to remove
Remove gasket only if worn or
damaged
Use appropriate pliers to remove
Use pliers to grip ball at the tip of
the X-element
Use a wrench to remove
Be careful not to bend
Be careful not to bend
Clean seating surfaces between cover
and body, coat threads (only LA21) with
anti-seize, tighten to the proper torque
Insert securely into the 3 slots on the X-
element guide or cover (figure A)
Insert right side up making sure not to
catch the guide or cover (figure B)
Tighten to the proper torque
Fix with Valve Seat and make sure X-
element can be inserted smoothly
Disassembly/Reassembly (to reassemble, follow procedures in reverse)