Flint & Walling CPH Convertible - Manuel (Page 11)

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PUMP PRIMING & STARTUP (CONTINUED)
Deep Well Application Only:
CAUTION: All pumps must be primed
(filling the cavity with water) before they are
first operated. This may take several gallons
of water, as the suction line will be filled in
addition to the pump cavity.
1. Remove the 1/2” priming plug. ( Fig. 1)
1
2
2. Fill pump cavity with water until full and
replace priming plug. ( Fig. 2)
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3. Tighten flow control screw completely by
turning clockwise, then loosen two turns.
Now start the pump. ( Fig. 3)
Pressure
Gauge
4
4. If pump is properly primed, pressure will
quickly build and register on the gauge
mounted directly on the pump body. If
pressure does not build repeat priming
operation. All air must be vented from the
drive and suction pipes as well as the body
before the pump will prime. The pump body
may need to be filled several times in order
to achieve the prime. ( Fig. 4)
PUMP PRIMING & STARTUP (CONTINUED)
5. With pump operating at high pressure, open
two or more faucets and slowly unscrew
the flow control screw until maximum flow
is obtained. This steady pressure will be
minimum operating pressure and should agree
with the pressure shown below. The flow
control screw diverts the proper amount of
water to operate the ejector. ( Fig. 5)
The correct control valve setting will depend on the type of well installation and pressure switch
setting for the particular pump.
NOTE: Flow control is not required for shallow well applications.
IMPORTANT: If the pump fails to prime within five minutes:
Turn power off at the breaker box. Look for leaks or a milky color in the discharged water, which
indicates an air leak. Re-prime if necessary, following steps 1 through 5 above. Reset breaker at the
breaker box. All connections must be water and air tight in order for pump to operate.
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HP Pressure Setting
1/3
1/2
3/4
1
24 PSI
27 PSI
38 PSI
46 PSI
CARE AND MAINTENANCE
Winterizing
CAUTION: Drain the entire system if
there is danger of freezing. A drain plug is
provided at the bottom of the pump case for
this purpose. ( Fig 1).
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PREVENT
PUMP
DAMAGE!
Remove plug
in freezing
weather
5
5. Thread in priming plug and then open optional
ball valve if installed by turning handle to line
up with the pipe. (Fig. 5)
6. Turn on breaker to start pump
IMPORTANT: If the pump hums instead of
pumping or turns off repeatedly, shut pump off
immediately.
Check voltage. Make sure your incoming voltage
matches the pump wiring voltage. See wiring
guide in the instructions.