8. Troubleshooting
If the expected performance is unachievable after installation of the steam trap, read chapter 5
again and check the following points to take appropriate corrective measures.
Problem
No condensate
is discharged or
discharge is poor
(blocked)
Steam is
discharged or leaks
from the outlet*
(blowing)
(steam leakage)
Steam is leaking
from a place other
than the outlet
Float frequently
becomes damaged
Some condensate
is held in the trap
* Small amounts of steam will be discharged through the drain hole if the condensate load drops
below the minimum specified amount.
Cause
The float is damaged or filled with
condensate
The float is sticking to the orifice
The orifice, drain hole or piping are
clogged with foreign matter
Steam-locking has occurred
Flow exceeds trap's rated capacity
The trap operating pressure
exceeds the maximum specified
pressure, or whether there is
insufficient pressure differential
between the trap inlet and outlet
Foreign matter has accumulated
around the orifice or under the float
Scratches on the orifice
The float is deformed or has
build-up
Trap is installed above the
maximum allowable inclination
angle
Trap vibration
Gasket deterioration or damage
Improper tightening torque was
used on the body clamp wing nut
Water hammer occurs
The small drain hole is blocked or
clogged with foreign matter
― 9 ―
Remedy
Replace with new float
Clean parts
Clean parts
Perform a bypass blowdown or
close the trap inlet valve and allow
the trap to cool
Check specifications and reselect
trap suitable for actual flow
Compare specifications and actual
operating conditions
Clean parts
Replace lower body
Clean or replace float
Correct the installation
Lengthen inlet piping and fasten
securely
Replace with new gasket
Tighten to the proper torque
Study and correct the piping
Clean