a. Float is damaged or filled with condensate
To do:
1. Replace with new float
b. The float is sticking to the valve seat
To do:
1. Need cleaning
c. Orifice, screen or piping is clogged with rust or scale
To do:
1. Replace with new float
d. Steam-locking has occurred
To do:
1. Blowdown through the bypass or close the trap inlet valve and allow the trap to cool
e. Flow exceeds traps rated capacity
To do:
1. Check specifications and reselect trap suitable for actual flow
f. The trap operating pressure exceeds the maximum specified pressure, or there is insufficient differential pressure between the trap inlet and outlet
To do:
1. Compare specifications and actual operating conditions
a. Rust and scale has accumulated around the valve seat or under the float
To do:
1. Need cleaning
b. The Orifice is damaged
To do:
1. Replace with new valve seat
c. Float is deformed or coated with scale
To do:
1. Clean the float
2. Replace the float
d. Trap is installed above the maximum allowable inclination angle
To do:
1. Correct the installation
e. Vibration of trap occurs
To do:
1. Lengthen inlet piping, then fasten it securely
f. The air vent strip is damaged
To do:
1. Replace with a new air vent strip
a. Deterioration of or damage to gaskets
To do:
1. Replace with new gaskets
b. Improper tightening torque for cover was used
To do:
1. Tighten to the proper torque
a. Water hammer occurs
To do:
1. Examine the piping for problems that can cause water hammer