172-65591A-01 (P46UC-Y) 19 Jan 2021
11
Troubleshooting
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. Disassembling or removing the
product when it is hot or under pressure may lead to discharge of fluids,
causing burns, other injuries or damage.
CAUTION
If the trap fails to operate properly, use the following table to locate the cause and
remedy.
Problem
Cause
Remedy
No condensate is
discharged (blocked)
or discharge is poor
The module valve seat, screen or piping
are clogged with rust or scale
Clean parts
The disc is stuck to the module valve
seat surface
Clean parts
Air binding has occurred
Perform a bypass blowdown, or
close the trap inlet valve and
allow the trap to cool
Air binding due to the disc holder ring or
air vent ring wear
Replace with a new disc holder
ring or air vent ring
Steam-locking has occurred
Perform a bypass blowdown or
close the trap inlet valve and
allow the trap to cool. Piping
correction may also be required.
Trap operating pressure is below the
minimum specified pressure or there is
insufficient pressure differential between
the trap inlet and outlet
Compare specifications and
actual operating conditions
Steam is discharged
or leaks from the
outlet
(blowing)
(steam leakage)
Rust or scale on the disc or on the
module valve seat
Clean parts
Disc or module valve seat surface
damage or wear
Replace with a new disc
Replace with a new module
valve seat or trap unit
Improper installation orientation
Correct the installation
Trap vibration
Lengthen the inlet piping and
fasten it securely
Trap operating pressure is less than the
minimum specified pressure or the back
pressure exceeds the allowable back
pressure
Compare specifications and
actual operating conditions
The back pressure exceeds the
allowable back pressure (50% of inlet
pressure)
Compare specifications and
actual operating conditions
Steam is leaking from
a place other than the
outlet
Gasket deterioration or damage
Replace the gaskets
Improper tightening torque was used
Tighten to the proper torque
Note: If parts need replacement, refer to the parts list in this manual and select the appropriate
kit/unit for replacement parts. Parts are only available as a part of the kits/units shown.