Quantcast Table 3-2. Troubleshooting Steam Traps -Cont.

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Troubleshooting Steam Traps (Continued)
TABLE 3-2.
Possible Cause/
Problem Indication
Normal Operation
Type Trap
Action
Sound Inspection
lost and
Continuous discharge on normal
F&T
Ioads.  May be intermittent on
Noisy; high pitch sound.
Steam flowing
l i g h t load.
through; failed
open.
Replace or overhaul
trap.
No sound.
Failed closed.
Constant low pitch sound of
continuous flow.
Replace or overhaul
trap.
Thermo-
Discharge continuous or inter-
Same as for float trap above.
static
mittent depending on load,
pressure, type.
Constant low pitch sound of
continuous or modulating flow,
Inverted
Cycling sound of bucket opening
Steam blowing through.
Failed open.
bucket
and closing.
Quiet steady bubbling on light
Replace or overhaul
load.
trap.
No sound.
Failed closed.
Replace or overhaul
trap.
Discharging steadily; no bucket
Handling air; check
sound.
again in 1 hour.
Clear vent or re-
place trap.
Discharging steadily; bucket
Lost prime.
dancing.
Add prima or re-
place trap.
Discharging steadily; bucket
Failure of internal
dancing after priming.
parts.
Replace or overhaul
trap.
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