Xylem 19 001 200 R2 SILENT STORM VFD Pumping System - Manual (Page 27)

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WARNING: Pump Pressure Hazard
Pumping system must be isolated from the system
and pressure released before disassembly of any
piping, valves, or pumps.
Failure to follow these instructions could result in
serious personal injury, death, or property
damage.
CAUTION: Compressed Air Hazard
Proceed with caution when working with
compressed air.
Failure to follow these instructions could result in
serious personal injury, death, and/or property
damage.
7. Connect hose to hose bib on the pump
station. The bib is usually found under the
discharge manifold for the pumps, or at
the end of the hydro-pneumatic tank.
8. Slowly, open the hose bib ball valve on
the pump station. Slowly, open all ball
valves on the pump station. Wait until
pump station pressure reads 0 PSI before
closing the hose bib ball valve.
Vertical Stations
1. Carefully, remove plugs from the pump
heads, including the submersible pressure
maintenance pump. (See also Appendix A
and Appendix B.)
WARNING: Pump Pressure Hazard
Pumping system must be isolated from the system
and pressure released before disassembly of any
piping, valves, or pumps.
Failure to follow these instructions could result in
serious personal injury, death, or property
damage.
2. Carefully remove all tubing from the relief
valve and/or the control valve, and drain
both valves.
3. Carefully remove all tubing from pressure
switches and transducers. Make certain
that the station piping is completely
drained.
4. Drain all valve pilots, including the sensing
chamber and all pressure switches.
5. Loosen valve bonnet bolts, loosen the
bonnet, and drain the valve bonnet of
water.
6. Re-tighten the relief or the control valve
bonnets.
7. Fill bonnets with a good-quality, non-toxic
(such as, RV [Recreation Vehicle])
antifreeze.
Horizontal Stations
1. Slowly, bleed pressure from the inlet
manifold using the ball valve or the hose
bib on the isolation ball valve on the
pressure gauge. Carefully, remove plug
from the inlet manifold and drain.
NOTE: Do this only if an inlet isolation
valve is installed and closed.
WARNING: Pump Pressure Hazard
Pumping system must be isolated from the system
and pressure released before disassembly of any
piping, valves, or pumps.
Failure to follow these instructions could result in
serious personal injury, death, or property
damage.
2. If there is not an inlet isolation valve then
and you cannot drain the inlet line, close
all pump inlet isolation valves.
3. Remove the lowest plug on the pump
volute or open the pit cock valve to drain
all pumps completely.
4. Carefully, drain all filters and their
components, including the flush lines.
Spring Restart of Pumping Station
Prior to restarting the pump station in the
spring:
1. Make certain that all tubing is replaced; all
connections are tightened; and check that
all the drain valves are closed.
2. Open all operating valves and verify that
the bonnet is tight.
3. Check that the drain plugs are installed in
pumps and piping.
NOTE: Contact Xylem Flowtronex PSI, if you
have further questions on winterizing your
pump station.