9. Troubleshooting
If the expected performance is unachievable after installation of the steam trap, read chapters 5
and 6 again and check the following points for appropriate corrective measures.
Problem
No condensate
is discharged or
discharge is
poor (blocked)
Steam is
discharged or
leaks from the
trap outlet
(blowing)
(steam leakage)
Steam leaks
from a place
other than the
trap outlet
Float is damaged or filled with
condensate
The trap operating pressure exceeds
the maximum specified pressure, or
there is insufficient differential pressure
between the trap inlet and outlet
Compare specifications and actual
operating conditions
Steam-locking has occurred
Flow exceeds trap’s rated capacity
Blowdown through the bypass or
close the trap inlet valve and allow
the trap to cool
Check specifications and reselect
trap suitable for actual flow
Clean
Deterioration of or damage to gaskets
Replace with new gaskets
Float is
frequently
damaged
Water hammer occurs
Examine the piping for
problems that can cause
water hammer
The Orifice is damaged
Replace with new valve seat
Float is deformed or coated with scale
Clean or replace the float
Trap is installed above the maximum
allowable inclination angle
Correct the installation
Vibration of trap occurs
Lengthen inlet piping, then fasten it
securely
The air vent strip is damaged
Replace with a new air vent strip
Replace with new float
Cause
Remedy
The float is sticking to the valve seat
Tighten to the proper torque
Orifice, screen or piping is
clogged with rust or scale
Rust and scale have accumulated
around the valve seat or under the float
Clean
Clean
Improper tightening torque for cover
was used
NOTE: When replacing parts with new, use the parts list on page 5 for reference, and replace with
parts from the respective replacement parts kits.
10. Product Warranty
1) Warranty Period: one year after product delivery.
2) TLV CO., LTD. warrants this product to the original purchaser to be free from defective
materials and workmanship. Under this warranty, the product will be repaired or replaced at
our option, without charge for parts or labor.
3) This product warranty will not apply to cosmetic defects, nor to any product whose exterior
has been damaged or defaced; nor does it apply in the following cases:
1. Malfunction due to improper installation, use, handling, etc., by other than TLV CO., LTD.
authorized service representatives.
2. Malfunctions due to dirt, scale, rust, etc.
3. Malfunctions due to improper disassembly and reassembly, or inadequate inspection and
maintenance by other than TLV CO., LTD. authorized service representatives.
4. Malfunction due to disasters or forces of nature.
5. Accidents or malfunctions due to any other cause beyond the control of TLV CO., LTD.
4) Under no circumstances will TLV CO., LTD. be liable for consequential economic loss or
damage or consequential damage to property.
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