Priming The Pump - Flotec FP5252 Manual Del Usuario

Operation
Figure 4: Fill Pump Before Starting
Figure 5: Do Not Run Pump With
Outlet Shut Off
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PRIMING THE PUMP

NOTICE: 'Priming' refers to pump expelling all air in the system and begin-
ning to move water from its source out into system. It does not refer only to
pouring water into pump (although pouring water in is usually the first
step).
NEVER run pump dry. Running pump without water may
cause pump to overheat, damaging seal and possibly causing burns to
persons handling pump. Fill pump with water before starting.
Step 1. Remove priming plug.
Step 2. Make sure suction and discharge valves and any hoses on discharge
side of pump are open.
Step 3. Fill pump and suction pipe with water (Fig. 4).
Step 4. Replace priming plug, using Teflon tape on thread; tighten plug.
NOTICE: If priming tee and plug have been provided for long hori-
zontal run, be sure to fill suction pipe through this tee and replace
plug. (Use Teflon tape on plug.)
Step 5. Start pump; water should be produced in 10 minutes or less, time
depends on depth to water (not more than 20' (6 m)) and length of
horizontal run (10' (3 m) of horizontal suction pipe = 1' (30.5 cm)
of vertical lift due to friction losses in pipe). If no water is produced
within 10 minutes, stop pump, release all pressure, remove priming
plug, refill and try again.
NEVER run pump against closed discharge. To do so can boil
water inside pump, causing hazardous pressure in unit, risk of explosion
and possibly scalding persons handling pump (Fig. 5). Replace priming
plug with pressure gauge to monitor pressure so that it is not allowed to
exceed maximum pumping pressures according to performance chart.
NOTICE: Open water system faucets before priming pump for the first
time.
Remove priming plug.
Step A. Fully open control valve (turn counterclockwise).
1117 0993
Step B. Fill pump and suction pipe with water.
Step C. Replace priming plug, using Teflon tape on plug thread; tighten
plug.
To prevent explosion, do the following:
Step A. Be sure discharge (valve, pistol grip hose nozzle, etc.) is open
whenever pump is running.
Step B. If pump fails to produce water when attempting to prime, release
all pressure, drain pump and refill with cold water after every
attempt.
Step C. When priming, monitor pump body and piping temperature. Motor
will warm up; this is normal. If pump body or piping begin to feel
warm to touch, shut off pump and allow system to cool. Release all
pressure in system and refill pump and piping with cold water.
Step D. Make sure discharge pipe and zone size are not too small for this
pumps performance.
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