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Metering Pumps
Operating and Maintenance Instructions
www.empirepumps.com
To prime the pump, connect the discharge tubing and follow the sequence shown in Figure 5.
•
unscrew the bleeding knob, with the pump running,
•
keep the bleed valve B open until all the air contained in the tube and in the pump body comes out,
•
close the bleed valve.
If you are experiencing difficulty in priming the pump, then with a syringe withdraw the additive from the
bleed nipple reducing the number of impulses delivered by the device.
Fig.5
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Bleed operation for priming
Diagram of typical system
A Injection fitting
B Injection valve
C Back pressure valve
D Pressure Gauge
E Relief valve
F Electrical power socket
G Additive tank
H Bottom filter
I Level probe
Fig. 6
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Typical Plant
Both on the flow pipe and the suction pipe avoid excessive curves in order to prevent bottlenecks in the pipe
itself. In the point most suitable for the injection of the product to be dispensed, apply a 3/8" fitting or a ½"
female gas thread on the conduct of the plant to be treated. This fitting is not supplied. Screw the injection
valve to the "gasket fitting" using PTFE tape, see Fig 7. Connect the tube to the conical injection valve and
secure it with the locking ring (4). The injection valve is also a non-return valve.
