TLV L Série Manuel D'utilisation page 14

9. Troubleshooting
If the expected performance is unachievable after installation of the steam trap, read the "Proper
Installation" and "Piping Arrangement" chapters again, and check the following table for the
appropriate corrective measures to be taken.
Problem
No X-element is stuck to the valve seat
condensate is
Valve seat is clogged
discharged
Screen is clogged with rust or scale
(blocked)
Trap operating pressure exceeds
or discharge
maximum specified operating pressure
is poor
Differential pressure is insufficient
Steam Valve closure is obstructed by rust, etc Clean (inspect screen as well)
leakage or
X-element is worn or damaged
blow-off
Valve seat is worn or damaged
Improper installation
Severe vibration of trap
Cover is loose or gaskets are worn or
Leakage from
damaged
other location
NOTE: When replacing parts with new, use the parts list on page 7 for reference, and replace with
parts from the Maintenance Kit or Repair Kit.
10. Optional Blowdown Valve BD2
The BD2 Blowdown Valve, installed in place of the screen holder, uses internal pressure to blow
out condensate/steam, dirt and scale to the atmosphere.
CAUTION
• When disassembling or removing the product, wait until the internal pressure equals
atmospheric pressure and the surface of the product has cooled to room temperature.
• Do not tighten the BD2 valve or the BD2 valve seat in excess of the appropriate tightening
torque. Over-tightening may cause breakage to threaded portions, which may cause burns,
other injuries or damage.
10.1 Reassembly of Blowdown Valve
1. Clean the trap, BD2 threads, and sealing surfaces, and apply a small amount of anti-seize.
2. Replace gasket.
3. Carefully place the gasket over the threaded portion, and position carefully so that it does not
become off-center.
4. Fasten to the steam trap with the proper torque.
Reassembly
Cause
• Installation, inspection, maintenance, repairs, disassembly, adjustment
and valve opening/closing should be carried out only by trained
maintenance personnel.
BD2
Torque (T) and Distance Across Flats (D)
Clean
Clean
Clean
Study inlet pressure
Study inlet / outlet pressure
Replace X-element
Replace valve seat or cover
Correct the installation
Reinforce trap piping supports
Tighten cover or replace gasket
Coat with
Anti-Seize
(T): 30 N m (22 lbf
·
①
(D): 17 mm ( 21 /
(T): 60 N m (43 lbf
·
②
(D): 22 mm (
7 /
8
̶ 13 ̶
Remedy
ft)
·
")
32
ft)
·
")