Operation
Finding
Finding
Finding the
the
the Proper
Proper
Proper Agitator
Agitator
Agitator Speed
Speed
Speed
NOTE:
NOTE:
NOTE: Always maintain moderate agitator speed,
which is approximately 20 to 40 rpm of the agitator
shaft. Excessive agitator speed may cause vibration,
foaming of fluid, and increased wear on parts. Always
agitate fluid thoroughly before supplying it to the
dispensing equipment. Continue agitating fluid while
the dispensing equipment is being supplied.
The agitator shaft speed can be calculated by using
the formula below or determined by the graph below
using the VFD frequency.
Example 1: (A
I
B) x C = D
I
E = F
Example 2: (40 hz
I
60 hz) x 1725 rpm = 1150
rpm (motor)
I
24 (gear reduction) = 48 rpm
(agitator shaft)
A
VFD Frequency
D
Motor RPM
B
Motor Frequency
E
Gear Reduction
C
Motor Speed
F
Agitator RPM
Agitator
Agitator
Agitator Shaft
Shaft
Shaft Speed
Speed
Speed
0
5
10
15
20
25
30
35
40
45
50
5
10
15
20
25
30
35
40
45
R
P
M
VFD
VFD
VFD Frequency
Frequency
Frequency (Hz)
(Hz)
(Hz)
— UL Motor Agitator Shaft Speed
– – – ATEX Motor Agitator Shaft speed
12
3A4548G
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