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34 Operating instructions
Section 3: Operation Operating and maintenance instructions
January 2015 3-9008-701 Rev J
If the process flow is to be left running through the prover, be sure to leave the hydraulic system
motor running. The hydraulic pump will go into by-pass mode and hold the piston upstream.
The motor will draw minimal current for low power consumption.
10. Open the process fluid diverter valve (double block and bleed) and slowly close the
inlet/outlet valves to the process line.
11. Drain the prover flow tube by opening the appropriate drain and vent valves located on
the top and bottom of the inlet and outlet flanges.
Important:
Disposal of drained fluid should be done in an environmentally responsible manner.