Bell & Gossett HS 213B Series B2 Inverted Bucket Steam Trap Service Parts - Manual (Page 10)

10
TROUBLESHOOTING
We recommend trap replacement when parts no longer operate properly. A new trap is more economical than
repairing or replacing parts and it will provide greater reliability. If you choose to repair the trap, order Hoffman
Specialty replacement parts and follow the Repair Procedure provided.
Problem:
1. Improper Heating
a. Cause: The bucket bleed hole is plugged,
trapping air in the top of the bucket.
Test: Using a stethoscope, listen for a gur-
gling sound in the trap. No gurgling
indicates the condensate is not draining.
Test: If a test valve is provided, slowly open
it. The discharge should be conden-
sate with very little steam.
Solution: Disassemble the trap and unclog the
bucket bleed hole.
b. Cause: The steam pressure is higher than
the bucket trap’s seat rating pressure
which prevents the trap from opening.
Test: Check the seat pressure rating on the
bucket trap nameplate with the avail-
able steam pressure to the equipment
being drained.
Solution: Install a new Hoffman Specialty
Inverted Bucket Bear Trap ® with the
proper pressure range.
Note: The trap must be selected for
the maximum differential pressure that
will be encountered. A high pressure
seat may be used at lower differential
pressures, but the capacity rating will
be less than an identical size trap with
a low pressure rated seat.
c. Cause: Full capacity drainage is prevented
by worn linkage.
Test: Disassemble the trap and inspect for
worn parts.
Test: If a test valve is provided, slowly open
it. The discharge should be conden-
sate with very little steam.
Solution: Install a new Hoffman Specialty
Inverted Bucket Bear Trap ® .
Problem:
2. Energy Wasted
a. Cause: A worn pin and seat or dirt deposited
on the seat prevents tight closure.
Test: Using a stethoscope, listen for a low
pitch whistle sound. A low pitch whis-
tle sound indicates the trap is open
and blowing live steam.
Test: If a test valve is provided, slowly open
it. The discharge should be conden-
sate with very little steam.
Solution: Disassemble the trap and inspect for
dirt or worn parts. Clean if dirty or
install a new Hoffman Specialty
Inverted Bucket Bear Trap
® if worn.
b. Cause: The trap does not close because the
linkage detached from the bucket
assembly.
Test: Using a stethoscope, listen for a low
pitch whistle. A low pitch whistle indi-
cates the trap is open and blowing
live steam.
Solution: Disassemble the trap and inspect for
worn parts. If worn, install a new
Hoffman Specialty Inverted Bucket
Bear Trap
® .