TCS 700-30, Installation, Operation & Maintenence Manual

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Air Eliminator Trouble Shooting
PROBLEM: Product is flowing from the Air Eliminators vents
A) Foreign matter located in between seal plate orings and metal reeds.
B) The seal plate oring may be worn through service life.
C) The seal plate oring may be cut or dislodged and requires replacement.
D) The float may have been punctured, containing liquid, not allowing the float to rise and seal the air
vents.
E) The float may have been ruptured from a surge of pressure within the system.
F) The metal reeds may be fatigued and requires replacement.
G) The metal reeds may be out of alignment with the seal plate.
PROBLEM: The meter is still registering air within the system
There can be numerous reasons why the meter may still register air. First look at the system configuration
and see where air is being introduced into the system. Then determine if the meter is registering “free air”
or “entrained air”. Free Air is much easier to remove from the metering system and may require the use
of the Spring Loaded Back Check Valve and/or the Differential Air Check Valve and/or High Volume
Strainer to help the air eliminator operate more effectively. Entrained Air is much more difficult to re-
move. Typically the best way to eliminate Entrained Air will be to remove the air source of entry into
the system. Some examples are from cavitating pumps and leaking pump/valve seals. A High Volume
Strainer may be help accumulate the liquid long enough to disperse the Entrained Air from the system.
See Air Elimination in the Service Manual for more information.
A) The air return line is not the required minimum of 1/2” ID.
B) The metering system has no sufficient way of eliminating the air to atmosphere. Example:
Incorrectly installed “Catch Can” reservoir (lower than the air eliminator itself), or the reservoir is
allowed to become full, incorrectly sized vent, etc…)