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PIPING - GENERAL
Support both suction and discharge piping independently at a
point near the pump to avoid putting a strain on the pump hous-
ing. Start all piping AT THE PUMP.
Increase pipe diameter at both the suction and discharge by one (1)
standard pipe size (minimum) to obtain desired performance and
flow rate. Refer to Table I when sizing pipe for your pumping system.
NOTE: Do not use pipe with smaller diameter on the suction
side of pump.
TABLE I
Pipe Tapping
Size On Pump
Suction
Discharge
1-1/4
1
1-1/2
1-1/4
SUCTION PIPE
Increase pipe size from pump tapping as shown in Table I.
Figure 1 (Page 2) depicts a recommended run of pipe and fittings
for the suction side of a centrifugal pump. Please refer to this illus-
tration when choosing pipe and fittings for your suction connection.
IMPORTANT: All connections must be air tight!
Figure 2 (Page 2) depicts conditions that are NOT DESIRABLE on
the suction side of a centrifugal pump and may cause problems in
flow rate and priming. Please look this illustration over carefully
before choosing pipe and fittings for your suction connection.
TABLE II - RECOMMENDED FUSING AND WIRING DATA - 60/50 CYCLE MOTORS
MOTOR
MODEL
HP
SCX1740
1/2
SCX1740
3/4
SCX1740
1
SCX1740
1-1/2
SCX1740
2
SCX1740
2-1/2
SCX1740
1/2
SCX1740
3/4
SCX1740
1
SCX1740
1-1/2
SCX1740
2
SCX1740
1/2
SCX1740
3/4
SCX1740
1
SCX1740
1-1/2
SCX1740
2
SCX1740
2-1/2
SCX1740
1/2
208-230/460/3
SCX1740
3/4
208-230/460/3
SCX1740
1
208-230/460/3
SCX1740
1-1/2
208-230/460/3
SCX1740
2
208-230/460/3
SCX1740
2-1/2
208-230/460/3
*A Fusetron is recommended instead of a fuse in any motor circuit.
Recommended
Pipe Size
Suction
Discharge
1-1/2
1-1/4
2
1-1/2
BRANCH
MAX. LOAD
VOLTAGE
AMPERES
SINGLE PHASE - ODP MOTORS
115/230/1
9.9/4.95
115/230/1
12.4/6.2
115/230/1
14.8/7.4
115/230/1
19.9/9.95
115/230/1
24.0/12.0
115/230/1
26.0/13.0
SINGLE PHASE - TEFC MOTORS
115/230/1
8.2/4.1
115/230/1
11.6/5.8
115/230/1
13.2/6.6
230/1
6.9
230/1
8.7
THREE PHASE - ODP MOTORS
230/460/3
2.3/1.15
230/460/3
3.1/1.55
230/460/3
3.6/1.8
230/460/3
4.7/2.35
230/460/3
6.8/2.4
230/460/3
8.5/4.25
THREE PHASE - TEFC MOTORS
2.2/1.1
2.9/1.45
3.6/6.8
4.8/2.4
6.0/3.0
7.0/3.5
DISCHARGE PIPING
Increase pipe size from pump tapping as show in Table I. Figure 1
(Page 2) depicts a recommended run of pipe and fittings for the
discharge. Install tee with priming plug as close to pump as possi-
ble. Figure 2 (Page 2) notes conditions that should be avoided.
Please read over carefully before making discharge connection.
PRIMING THE PUMP
A pump is primed when all air in the suction line and pump
volute has been evacuated and replaced with water.
To Prime:
1. Close valve in discharge line.
2. Remove priming plug from tee and fill pump and suction line
with water until water is flowing back out of tee.
3. Replace priming plug.
4. Start pump and slowly open valve until desired water flow is
achieved.
NOTE: If no water is pumped after 5 minutes, turn off pump,
close valve, and repeat steps 1 thru 4.
Risk of explosion and scalding. Never run pump
against closed discharge. To do so can boil water inside pump,
causing hazardous pressure buildup and possible explosion.
Risk of flooding. Do not run the pump dry. This
will damage mechanical seal and void warranty. It may cause
burns to person handling pump.
and will be too hot to touch. It is protected from heat damage
during operation by an automatic internal cutoff switch. Before han-
dling pump or motor, stop motor and allow it to cool for 20 minutes.
DISTANCE IN FEET FROM MOTOR TO METER
0'
FUSE*
TO
RATING
100'
AMPS
15/15
14/14
20/15
12/14
20/15
12/14
25/15
10/14
30/15
10/14
35/20
8/12
15/15
14/14
20/15
14/14
20/15
12/14
25/15
14
15
14
15
14/14
15
14/14
15
14/14
15
14/14
15
14/14
15
14/14
15
14/14
15
14/14
15
14/14
15
14/14
15
14/14
15
14/14
3
Motor normally operates at high temperature
101'
201'
TO
TO
200'
300'
WIRE SIZE
10/14
10/14
10/14
8/14
8/14
6/14
8/14
6/12
6/12
6/12
6/12
4/10
12/14
10/14
10/14
8/14
10/14
8/14
14
14
14
12
14/14
14/14
14/14
14/14
14/14
14/14
14/14
14/14
14/14
14/14
14/14
14/14
14/14
14/14
12/14
14/14
14/14
12/14
14/14
14/14
14/14
14/14
14/14
14/14
14/14
14/14
14/14
14/14
14/14
14/14
14/14
14/14
14/14
14/14
14/14
12/14
301'
401'
TO
TO
400'
500'
6/14
6/12
6/12
6/12
6/12
4/10
4/10
4/10
4/10
3/8
4/10
3/8
8/14
8/12
6/14
6/12
6/12
6/10
12
12
12
10
14/14
14/14
14/14
14/14
12/14
12/14
14/14
14/14
14/14
14/14
12/14
12/14
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