Franklin 2007 ユーザーズマニュアル

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Application – All Motors
Table 7 lists the approximate head loss due to fl ow 
between an average length motor and smooth casing or 
fl ow inducer sleeve.
Head Loss From Flow Past Motor
Hot Water Applications (Standard Motors)
Franklin Electric offers a line of Hi-Temp motors 
which are designed to operate in water with 
various temperatures up to 194 °F (90 °C) without 
increased fl ow. When a standard pump-motor 
operates in water hotter than 86 °F (30 °C), a fl ow 
rate of at least 3 ft/s is required. When selecting 
the motor to drive a pump in over 86 °F (30 °C) 
water, the motor horsepower must be de-rated per 
the following procedure. 
1.  Using table 7A, determine pump gpm required 
for different well or sleeve diameters. If 
necessary, add a fl ow sleeve to obtain at least 
3 ft/s fl ow rate.
MOTOR DIAMETER
4"
4"
4"
6"
6"
6"
8"
8"
CASING ID IN INCHES (MM)
4 (102)
5 (127)
6 (152)
6 (152)
7 (178)
8 (203)
8.1 (206)
10 (254) 
Flo
w Rate in gpm (l/m)
25 (95)
0.3 (.09)
50 (189)
1.2 (.37)
100 (378)
4.7 (1.4)
0.3 (.09)
1.7 (.52)
150 (568)
10.2 (3.1)
0.6 (.18)
0.2 (.06)
3.7 (1.1)
200 (757)
1.1 (.34)
0.4 (.12)
6.3 (1.9)
0.5 (.15)
6.8 (2.1)
250 (946)
1.8 (.55)
0.7 (.21)
9.6 (2.9)
0.8 (.24)
10.4 (3.2)
300 (1136)
2.5 (.75)
1.0 (.30)
13.6 (4.1)
1.2 (.37)
0.2 (.06)
14.6 (4.5)
400 (1514)
23.7 (7.2)
2.0 (.61)
0.4 (.12)
24.6 (7.5)
500 (1893)
3.1 (.94)
0.7 (.21)
37.3 (11.4)
0.6 (0.2)
600 (2271)
4.4 (1.3)
1.0 (.30)
52.2 (15.9)
0.8 (0.3)
800 (3028)
1.5 (0.5)
1000 (3785)
2.4 (0.7)
Table 7 Head Loss in Feet (Meters) at Various Flow Rates
CASING OR
SLEEVE ID
4" HIGH 
THRUST MOTOR
6" MOTOR
8" MOTOR
INCHES
(MM)
 GPM
(L/M)
 GPM
(L/M)
GPM
(L/M)
4
(102)
15
(57)
5
(127)
80
(303)
6
(152)
160
(606)
52
(197)
7
(178)
150
(568)
8
(203)
260
(984)
60
(227)
10
(254)
520
(1970)
330
(1250)
12
(305)
650
(2460)
14
(356)
1020
(3860)
16
(406)
1460
(5530)
Table 7A Minimum gpm (l/m) Required for
3 ft/s (.91 m/sec) Flow Rate
7