12
Troubleshooting
NEVER apply direct heat to the float. The float may explode due to
increased internal pressure, causing accidents leading to serious injury
or damage to property and equipment.
WARNING
When disassembling or removing the product, wait until the internal
pressure equals atmospheric pressure and the surface of the product
has cooled to room temperature. Disassembling or removing the
product when it is hot or under pressure may lead to discharge of fluids,
causing burns, other injuries or damage.
CAUTION
When the trap fails to operate properly, use the following table to locate the cause.
Problem Cause
Remedy
Check to see if float is damaged or filled
with condensate
Replace with new float
Check the orifice, screen and piping to
see if they are clogged with rust and
scale
Clean parts
Check to see if steam-locking has
occurred
Perform a bypass blowdown,
or close the trap inlet valve
and allow the trap to cool
No condensate
is discharged
(blocked) or
discharge is
poor
Check to see if the trap operating
pressure exceeds the maximum
specified pressure, or whether there is
insufficient pressure differential
between the trap inlet and outlet
Compare specifications and
actual operating conditions
Check for a clogged orifice or rust and
scale under the float
Clean parts
Check for damage to the orifice
Replace with new orifice
Check that the float is not misshapen or
coated with scale
Clean or replace the float
Check for improper installation
Correct the installation
Steam is
discharged or
leaks from the
outlet
(blowing)
(steam
leakage)
Check for trap vibration
Lengthen inlet piping and
fasten securely
Check for gasket deterioration or
damage
Replace with new gasket(s)
Steam is
leaking from a
place other
than the outlet
Check to make sure that the proper
tightening torques were used
Tighten to the proper torque
Float is
frequently
damaged
Check for water hammer
Examine the piping for
problems that can cause
water hammer
NOTE: When replacing parts with new, use the parts list for reference, and replace with parts
from the Maintenance Kit and/or Repair Kit. Please note that replacement parts are only
available as part of a replacement parts kit.
172-65486MA-00 (SH5VL) 5 Sep 2012
