Operational Check - TLV L Série Manuel D'utilisation

Check to make sure that the pipes connected to the trap have been installed properly.
1. Is the pipe diameter suitable?
2. Has the trap been installed with the arrow on the body pointing in the direction of flow?
3. Has sufficient space been secured for maintenance?
4. Have maintenance valves been installed at inlet and outlet? If the outlet is subject to back
pressure, has a check valve been installed? (only with L21S, L32S).
5. Is the inlet pipe as short as possible, with as few bends as possible, and installed so that
the condensate will flow naturally down into the trap?
6. Has the piping work been done with the proper methods as shown in the table on page 9?

7. Operational Check

A visual inspection can be carried out to aid in determining the necessity for immediate
maintenance or repair, if the trap is open to atmosphere. If the trap does not discharge to
atmosphere, use diagnostic equipment such as TLV TrapMan or TLV Pocket TrapMan (within
their pressure and temperature measurement range).
Normal:
Blocked:
Blowing:
Steam Leakage:
(When conducting a visual inspection, flash steam is sometimes mistaken for steam leakage. For
this reason, the use of a steam trap diagnostic instrument such as TLV TrapMan is highly
recommended.)
Flash Steam
White jet
containing
water droplets
Condensate is discharged intermittently with flash steam and the
sound of flow can be heard.
No condensate is discharged. The trap is quiet and makes no noise.
The surface temperature of the trap is low.
Live steam continually flows from the outlet and there may be a high-
pitched whistling sound.
Live steam is discharged through the trap outlet together with the
condensate and there may be a high-pitched whistling sound.
̶ 10 ̶
Live Steam Leakage
Clear, slightly
bluish jet