Install Instructions

TROUBLESHOOTING
We recommend trap replacement when parts no
longer operate properly. A ne
w trap or a complete
cover assembly is more economical than repairing or
replacing individual 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 float assembly is not opening or
functioning properly
. This could be
caused by a leak in the float.
Test: Use a thermometer to test inlet tem-
perature.
A cold trap is an indication
the trap failed closed.
Solution: Disassemble the trap. Shake the float,
listening f
or water, and inspect for leaks.
Replace any worn or defective parts.
b. Cause: The steam pressure is higher than
the tr
ap’s seat rating pressure which
prevents the trap from opening.
Test: Check the seat pressure rating on the
In-line F&T trap nameplate with the
av
ailable steam pressure to the
equipment being drained.
Solution: Install a new Hoffman Specialty 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 ma
y 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 pre
vented
by worn linkage.
Test: Disassemble the trap and inspect for
w
orn parts.
Solution: Install a new Hoffman Specialty In-
line F&T Bear
Trap
®
.
Problem:
2. Energy Wasted
a. Cause: A w
orn 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.
Solution: Disassemble the trap and inspect for
dir
t or worn parts. Clean if dirty, or
replace if worn.
b. Cause: The thermostatic element failed open
and is blo
wing live steam.
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.
Solution: Disassemble the trap and replace the
ther
mostatic element
Hoffman Specialty
ITT
8200 N. Austin Ave.
Morton Grove, IL 60053
tel: [phone]
fax: [phone]
www
.hoffmanspecialty.com
©2007 ITT Corporation
Printed in U.S.A. 4-07 510987