Veeder-Root Maxxum Big-Flo 6, Установка, эксплуатация и обслуживание

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Service and Repair Replacing the Check Valve Assembly
29
Replacing the Check Valve Assembly
Disconnect, lock out, and tag power at the panel before servicing the pump
When servicing equipment, use non-sparking tools and use caution when removing or
installing equipment to avoid generating a spark.
Close the ball valve in the discharge line if it has been installed.
Care should be taken to insure that the internal portions of the vent line and check valve
assembly are clean and free of debris or contamination during servicing.
1. Relieve system pressure by removing the protective cover and then backing out the pressure adjustment
screw (see Figure 17).
2. Disassembly
a. Loosen or disconnect the lower vent line fitting.
b. Disconnect the upper vent line fitting.
c. Remove the four 1/2 inch hex bolts.
d. Pull the check valve housing assembly straight out of the manifold.
Figure 17. Maxxum® Check Valve Assembly
rj/051-301-23.eps
1/2-13 Hex bolt
O-ring
Check valve
Vent line
Thread
protector
Pressure
adjustment
screw
Protective
cover