Xylem 19 001 251 R3 Floboy VFD Pumping System - Manual (Page 31)

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WINTERIZING THE PUMP STATION
CAUTION: Equipment Damage Hazard
Your pumping system must be properly winterized before
storage. Failure to winterize the system could result in
damage to the pipes, valves, pumps, or other components.
Failure to follow these instructions indicates a potentially
hazardous situation, which, if not avoided, may result in
property damage.
Winterizing
1. Turn all enclosure switches to the OFF
position.
2. Open (turn off) all electrical disconnects to
the pump station.
DANGER: Personal Injury Hazard
The pumping system must be disconnected from the main
power supply before attempting any operation or
maintenance on the electrical or mechanical parts of the
system.
Failure to follow these instructions will result in death or
serious injury.
3. Close all the station discharge isolation
valves.
4. Close the pump station inlet isolation
valves.
5. Close all auxiliary equipment isolation
valves (if applicable).
6. Remove all connections from the heat
exchanger inlet and discharge. Force
water from the heat exchanger core with
compressed air.
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 or 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.
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.
8. 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 or death, or property damage.
9. If there is not an inlet isolation valve then
and you cannot drain the inlet line, close
all pump inlet isolation valves.
10. Remove the lowest plug on the pump
volute or open the pit cock valve to drain
all pumps completely.
11. Carefully, drain all filters and their
components, including the flush lines.
Spring Restart
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.