Pentair PRO-SOURCE APSC Serie Manual Del Propietário página 4

Installation • Operation
Tank Capacity
Model
Number
Litres (U.S. Gallons)
APSC-14-4 53 (14)
APSC-20-6 76 (20)
APSC-30-9 114 (30)
APSC-40-12 151 (40)
APSC-48-14 182 (48)
APSC-60-20 227 (60)
APSC-80-23 303 (80)
APSC-85-25 322 (85)
APSC-119-35 450 (119)
Table 2 – Water Yield Per Pump Cycle (drawdown)
in Litres (U.S. Gallons)
NOTICE Drawdown will be affected by operating
temperature of the system, accuracy of the pressure
switch and gauge, the actual precharge pressure, and the
rate of fill.
Installation
Connect system pipe to elbow on tank flange. Use plastic
or steel pipe as required. To prevent leaks, use PTFE
pipe thread sealant tape on male threads of all threaded
connections to tank.
NOTICE To be sure that joint is not cross-threaded and
that threads are clean, always make connections by
hand (without sealer) first. After making sure that threads
are clean, remove pipe, add PTFE tape, and remake
connection. Do not overtighten pipe connection at tank.
Thread connection on hand tight plus 3 additional turns
for steel pipe and 1-2 turns for schedule 40 PVC pipe.
NOTICE When replacing a standard tank in a
submersible pump system, raise pump and discharge
pipe far enough to remove bleeder orifices from the tees
in the discharge pipe. Plug the tees. When replacing a
standard tank in a jet pump system, remove Air Volume
Control (AVC) and plug AVC port in pump.
In areas where the temperature is high for long periods
of time, the tank pre-charge pressure may increase.
This may reduce the tank drawdown (amount of water
available per cycle). If this occurs, reduce the pre-charge
pressure to 14 kPa (2 psig) below the pump cut-in setting
of the pressure switch.
It is necessary to flush all air out of the piping system and
water reservoir portion of the pre-charged tank. This is
required on new installations, pumps requiring repriming
and pumps that have been disassembled for service.
Water Yield Per Pump Cycle
Litres (U.S. Gallons)
Pressure Switch Setting
kPa (psig)
140-280 210-350 280-420
(20-40) (30-50) (40-60)
20 (5.3) 17 (4.5) 15 (3.9)
27 (7.2) 23 (6.1) 20 (5.3)
41 (10.8) 34 (9.1) 30 (7.9)
56 (14.7) 47 (12.5) 41 (10.8)
65 (17.2) 55 (14.6) 48 (12.6)
83 (21.9) 70 (18.5) 61 (16.1)
110 (29.1) 93 (24.6) 81 (21.3)
120 (31.7) 101 (26.8) 88 (23.2)
166 (43.8) 140 (37.0) 121 (32.0)
Proceed as follows:
1. Open faucets furthest from tank and allow pump
to operate.
2. Air in the system will cause a sputtering flow; allow
faucets to run until you have a steady, air free stream.
3. Open and close faucets repeatedly until you are sure
all air has been removed.
4. If stream does not become steady, air may be leaking
into the system; check for leaks in the piping on the
suction side of the pump.
NOTICE To prevent waterlogging, check tank air charge
every six months.
Check Tank Air Charge
If drawdown (amount of water that comes out of tank per
pump cycle) decreases significantly, check as follows:
1. To check air charge in tank, shut off electric power to
pump, open faucet near tank, and drain completely.
2. Remove pole piece cap and check air pressure at the
air valve in top of tank with a standard tire gauge.
See Figure 3. Air pressure should be 14 kPa (2 psig)
below pump pressure switch cut-in setting (that is, if
switch closes at 210 kPa (30 psig), pressure in tank
should be at 196 kPa (28 psig)).
Figure 3: Use A Tire Gauge To Check Pre-charge In
Air Cell
3. If the air pressure is more than 14 kPa (2 psig) below
the cut-in setting, add air to the tank. Use an air
compressor or a portable air storage tank.
4. Use soap or liquid detergent to check for air leaks
around air valve. Continuous bubbling indicates a
leak. If necessary, install new core in air valve. This is
the same as those used for automobile tubeless tires.
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