Air Eliminator Trouble Shooting; Differential Valve Trouble Shooting - Total Control Systems 700-LP Series Installation, Operation & Maintenance Manual

Vapor Eliminator Trouble Shooting
PROBLEM: Product is flowing from the Vapor Eliminator vents
A) Foreign matter located in between seal plate o-rings and metal reeds.
B) The valve plate may be worn, requiring replacement.
C) The float may have been punctured not allowing the float to rise and seal the air vents.
D) The float may have been ruptured from a surge of pressure within the system.
E) The metal reeds may be fatigued and require replacement.
F) The metal reeds may be out of alignment with the seal plate.
PROBLEM: The meter is still registering vapor within the system
A) The vapor return line is not the required minimum of 1/2‖ ID.
B) Cavitating pump or leaking pump/valve seals.

Differential Valve Trouble Shooting

PROBLEM: Valve fails to open
A) Damaged vapor return line with no pressure relief from Valve Cap (Bonnet)
B) Puncture or Tear in Valve Diaphragm
PROBLEM: Product continues to flow through valve
A) Valve Seat has excessive wear or is damaged.
B) Valve Poppet is not secure and requires tightening.
C) Faulty Solenoid Valve (foreign material or ice).
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