Finish Thompson SP10 SERIES SELF-PRIMING - Manual (Page 8)

8
Motor/Electrical
Install the motor according to NEC requirements and local
electrical codes. The motor should have an overload protec-
tion circuit.
Wire the motor for clockwise rotation when facing the fan
end of the motor.
CAUTION: Do not operate the pump to check rotation
until the pump is full of liquid.
Check all electrical connections with the wiring diagram
on the motor. Make sure the voltage, frequency, phase, and
amp draw comply with the supply circuit.
To verify correct rotation of the motor:
1. Install the pump into the system.
2. Remove the fill plug (items 2 & 2A) and fill the hous -
ing with 0.6 US gallon / 77 oz. (2.7 liters) of the service
liquid or water. Replace fill plug and tighten until the
o-ring is seated.
NOTE: Use a flexible spout funnel or a “tee” in the
discharge piping to fill the housing on pumps equipped
with flanges.
3. Fully open the suction and discharge valves.
4. Jog the motor (allow it to run for 1-2 seconds) and ob-
serve the rotation of the motor fan. Refer to the direc-
tional arrow molded into the front of the housing if
necessary.
NOTE: An SP pump running backwards may not
prime.
Section III - Start-up and Operation
1. Be sure the housing (item 1) has been filled with 0.6
US gallon / 77 oz. (2.7 liters) of service liquid and the
fill plug (item 2 & 2A) has been installed and tightened
until the o-ring is seated.
2. Open the inlet (suction) and outlet (discharge) valves
completely.
3. Turn the pump on. Wait for discharge pressure and flow
to stabilize (could take several minutes depending
upon suction lift). Adjust the flow rate and pressure by
regulating the discharge valve. Do not attempt to adjust
the flow with the suction valve.
Section IV - Shutdown
Turn off the motor.
NOTE: When the pump is stopped without a check valve
in the piping, liquid will flow through the pump returning
to the suction source. The SP design allows enough liquid
to be retained in the housing to allow repriming without
having to refill with liquid.
Flush Systems
CAUTION: Some fluids react with water; use compat-
ible flushing fluid.
1. Turn off the pump.
2. Completely close the suction and discharge valves.
3. Connect flushing fluid supply to flush inlet valve.
4. Connect flushing fluid drain to flush drain valve.
5. Open flushing inlet and outlet valves. Flush system
until the pump is clean.
NOTE: The drain can be used as the flushing drain
valve using appropriate customer supplied fittings. Us-
ing the drain helps to promote superior flushing and
draining results.
SP10 Priming Time Chart
1” (25.4 mm) Suction Piping 1.5” (38.1 mm) Suction Piping
Impeller
Diameter
Motor Speed Motor Speed
3450 RPM 2900 RPM 3450 RPM 2900 RPM
Feet of Lift (sec.) Meters of Lift (sec.) Feet of Lift (sec.) Meters of Lift (sec.)
in. (mm) 5 10 15 20 25 1.5 3.1 4.6 6.1 7.6 5 10 15 20 25 1.5 3.1 4.6 6.1 7.6
4.18 (106.2) 10 35 65 100 140 10 40 80 160 240 25 60 100 150 210 30 75 145 255 455
4.00 (101.6) 12 37 68 130 310 20 50 90 200 320 28 60 100 180 280 35 80 150 360
3.75 (95.3) 15 45 72 155 30 45 135 30 70 110 275 40 95 240
3.5 (88.9) 20 50 75 185 35 75 225 35 80 150 60 120
3.25 (82.6) 25 60 145 37 150 40 88 240 85 225
3 (76.2) 27 115 60 55 165 120
NOTE: Times shown are guidelines only. Times will vary based on system and piping setups.