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9. Troubleshooting
If the expected performance is unachievable after installation of the steam trap, read chapter 5
and chapter 6 again and check the following points to take appropriate corrective measures.
Problem
Cause
Condensate
Valve does
is not
not open
discharged
or (blocked)
discharge is
poor
Steam
Valve does
leakage or
not close
blow-off
Leakage
from
another
location
NOTE: When replacing parts with new, use the parts list on page 5 for reference, and replace with
parts from the respective replacement parts kits.
Analysis
X-element is stuck to the valve
seat
Screens and/or inlet/outlet
channels are clogged with rust
or scale
Steam-locking
Trap operating pressure
exceeds maximum specified
operating pressure
Differential pressure is
insufficient
Valve closure is obstructed by
rust or scale, etc
X-element and/or valve seat are
worn or damaged
X-element is broken
Severe vibration of trap
Gaskets of connector, trap
cover, screen holder or valve
seat are worn or damaged
Cover bolts, connector flange
bolts, screenholder, or valve
seat are loose
Inlet and discharge channels
may be connected due to
erosion
Bypass valve is open or
damaged
― 14 ―
Corrective Measures
Clean
Clean
Study piping
Study inlet pressure
Study inlet/outlet pressure
Clean (inspect screens as
well)
Replace X-element and/or
valve seat
Replace X-element
Reinforce trap piping supports
Repair gaskets
Tighten to proper torque
Replace trap
(study trap capacity)
Repair or close valve
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