Quantcast Table 3-2. Troubleshooting Steam Traps

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Troubleshooting Steam Traps
TABLE 3-2.
Possible Cause/
Problem Indication
Normal Operation
Type Trap
Action
Visual Inspection
Live steam discharge; little
Failed open.
All
Trap hot under operating
entrained liquid.
types
conditions.
Discharge mixture of condensate
Replace or overhaul
trap.
and flash stream.
Cycling open/close depending on
Condensate cool; little flash
Holding back
t y p e of trap.
stream.
condensate.
Relatively high inlet tempera-
ture.
Check trap for dirt
or inoperative
valves.
No discharge.
Failed closed;
clogged strainer;
line obstruction.
Replace or overhaul
trap; clean
strainer; clear
line.
Leaking steam at trap.
Faulty gasket.
Replace gasket.
Temperature Measurement
High temperature downstream.
Failed open.
Replace or overhaul
trap.
Low temperature upstream.
Failed closed,
clogged strainer,
line obstruction.
Replace or overhaul
trap.  Clean
s t r a i n e r ; clear
line.
3-39





 


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