Priming The Pump - Pentair MYERS PQP10 Notice D'utilisation

PriMiNG tHE PUMP

NOticE: 'Priming' refers to the pump expelling all air
in the system and beginning to move water from its
source out into the system. It does not refer only to
pouring water into the pump (although pouring water in
is usually the first step).
NOticE: NEVEr run pump dry. Running pump
without water in it will damage seals and can melt
impeller and diffuser. To prevent damage, fill pump
with water before starting.
1. Remove priming plug (Figure 14).
figure 14 – remove Priming Plug
2. Make sure suction and discharge valves and any
hoses on discharge side of pump are open.
3. Fill pump and suction pipe with water.
4. Replace priming plug, using PTFE pipe thread
sealant tape on thread; tighten plug.
NOticE: If a priming tee and plug have been
provided for a long horizontal run, be sure to fill
suction pipe through this tee and replace plug.
(Don't forget to PTFE pipe thread sealant tape the
plug.)
figure 15 – fill Pump Before Starting
Operation
5. Start pump: water should be produced in 10 minutes
or less, the time depending on depth to water (not
more than 20') and length of horizontal run (10' of
horizontal suction pipe = 1' of vertical lift due to
friction losses in the pipe).
If no water is produced within 10 minutes, stop
pump, release all pressure, remove priming plug,
refill and try again.
figure 16 – run ten Minutes or less
of explosion and scalding. if pump is run
continuously at no flow (that is, with discharge
shut off or without priming), water may boil in
pump and piping system. Under steam pressure,
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pipes may rupture, blow off of fittings or blow
out of pump ports and scald anyone near.
figure 17 – Do Not run Pump with Discharge
Shut-off
To prevent explosion, do the following:
A. Be sure discharge (valve, pistol grip hose nozzle,
etc.) is open whenever pump is running.
B. If pump fails to produce water, release all pressure,
drain pump and refill with cold water after every two
attempts.
C. W h e n p r i m i n g , m o n i t o r p u m p a n d p i p i n g
temperature. If pump or piping begin to feel warm
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to the touch, shut off pump and allow system to cool
off. Release all pressure in system and refill pump
and piping with cold water.
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H a z a r d o u s p r e s s u r e a n d r i s k
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