Finding The Proper Agitator Speed - Graco 25C483 Instructions - Parts Manual

Operation
Finding the the Proper Proper Agitator
Finding Finding the Proper
NOTE: NOTE: Always maintain moderate agitator speed, NOTE:
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: (AIB) x C = DIE = 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
B Motor Frequency
C Motor Speed
12
Agitator Speed Speed
Agitator Speed
D Motor RPM
E Gear Reduction
F Agitator RPM
Agitator Shaft Shaft Speed
Agitator Agitator Shaft
50
45
40
35
30
25
20
15
10
5
0
5 10 15 20
VFD Frequency Frequency (Hz)
VFD VFD Frequency
— UL Motor Agitator Shaft Speed
– – – ATEX Motor Agitator Shaft speed
Speed
Speed
25 30 35 40 45
(Hz)
(Hz)
3A4548G