AERCO Float and Thermostatic Traps Series X - Manual (Page 6)

TROUBLESHOOTING
Problem:
1. Improper heating.
a. Cause: Thermostat failed closed and prevents
air from escaping.
Test: Blow air through the thermostat
when it is at normal room tempera-
ture, for a visual check. If air does not
pass through, the thermostat is not
functioning properly.
b. Cause: Float assembly failed closed and
caused condensate to back-up into the
steam space.
Test: Using a stethoscope, listen for a gur-
gling sound. No gurgling indicates that
condensate is not draining.
Using a thermometer, check the trap dis-
charge temperature. If the temperature is
lower than normal, the condensate is not
draining.
c. Cause: Incorrect trap seat pressure selected.
Test: Check seat pressure rating on trap name-
plate. The seat pressure rating must be
equal or higher than the steam supply
pressure.
2. Energy wasted.
a. Cause: Thermostat failed open and allowed live
steam to blow through the trap.
Test: Using a stethoscope, listen for a low pitch
whistle as steam passes through the open
orifice. A whistle indicates the thermostat
failed open.
b. Cause: Float assembly failed open and allowed
live steam to blow through the trap.
Test: Install a test valve in the discharge line
from the trap outlet. Observe the trap
operation for steam leakage. Excessive
steam leakage indicates the float assembly
failed open.
Using a stethoscope, listen for a low pitch
whistle by positioning the stethoscope near
the thermostat or the float assembly. A
whistle indicates the thermostat or float
assembly (depending on where the stetho-
scope is positioned) failed open.
OR
OR
MAINTENANCE
When checked regularly and properly maintained, the
Series FT Float and Thermostatic traps will
provide optimum performance and long life.
SCHEDULE:
• Initially, every 2 - 3 days after start-up until
system is clean.
• Every 6 months thereafter.
1. Inspect joints for leaks. Stop all leaks by tightening
bolts and replacing gaskets, if necessary.
2. Clean strainers by opening the blow down valve
and allowing full steam pressure to flow out for (2)
two minutes. Then, close the valve.
To prevent serious burns, the internal
pressure of the trap must be 0 psi
(0 bar) before servicing.
Failure to follow this caution will
cause personal injury.
CAUTION !
To prevent serious personal injury from steam
pipe blow down, connect a temporary pipe
between the steam pipe opening and a
drain, or stand at least 100 ft. (30m) from
the pipe opening.
Failure to follow this warning could cause
property damage, personal injury, or death.
! WARNING
Hoffman Specialty
ITT
8200 N. Austin Ave.
Morton Grove, IL 60053
tel: 847-966-3700
fax: 847-966-9052
www.hoffmanspecialty.com ©2007 ITT Corporation
Printed in U.S.A. 6-07 510837