33
Valley Classic Control Panel
Operation
Percent Setting Timer Calculations (Continued)
2. Determine the End Tower Rotational Speed at 100% Timer Setting from the following chart:
Standard Tires
Retread
High Float
Maxi-Float
Last Regular Drive Unit ***
11.2 x 24
11 x 24.5
14.9 x 24
16.9 x 24
11.2 x 38
Center Drive Output RPM
ft/min
M/min
ft/min
M/min
ft/min
M/min
ft/min
M/min
ft/min
M/min
30
6.10
1.86
6.33
1.93
6.77
2.06
7.22
2.20
8.34
2.54
34
6.87
2.09
7.14
2.17
7.75
2.36
8.25
2.51
9.12
2.78
37
7.53
2.30
7.82
2.38
8.53
2.60
8.9
2.71
10.28
3.13
56
11.39
3.47
11.83
3.61
12.63
3.85
13.48
4.11
15.03
4.58
68
13.74
4.19
14.28
4.35
15.49
4.72
16.51
5.03
18.24
5.56
*** RPM and speed for 480 V, 60 Hz service. For 50 Hz service reduce travel by factor of 0.833.
Example: 30 RPM center drive motor with 14.9 x 24 High Float Tires = 6.77 feet Per Minute (2.06 Meters Per Minute)
3. Determine inches (millimeters) per day the machine will apply.
Inches Per Day
=
(GPM) (735.3 in)
Millimeters Per Day
=
(LPS) (27,488.4 mm)
(SL)2
(SL)2
Example:
Example:
Gallons Per Minute = 800 GPM
Liters Per Second =
50.47 LPS
System Length = 1424 ft
System Length =
434 M
Inches. Per Day =
(800 GPM) (735.3 in)
Millimeters Per Day =
(50.47 LPS) (27,488.4 mm)
(1424 ft)
2
(434 M)
2
=
0.29 Inches Per Day
=
7.3 Millimeters Per Day
4. Determine Hours Per Revolution at 100 Percent Timer Setting.
Hours Per Revolution at 100% = (0.105) (DLRDU in feet)
Hours Per Revolution at 100% =
(0.105) (DLRDU in Meters)
(Speed in ft/min)
(Speed in M/min.)
Example:
Example:
DLRDU = 1260 ft
DLRDU = 384 M
Speed in Feet Per Minute = 6.77 ft/min
Speed in Meters Per Minute = 2.06 M/min
Hours Per Revolution at 100% =
(0.105) (1260 ft)
Hours Per Revolution at 100% =
(0.105) (384 M)
(6.77 ft)
(2.06 M/min)
= 19.5 Hours Per Revolution at 100%
= 19.5 Hours Per Revolution at 100%
5. Determine Inches (millimeters) Per Revolution at 100 Percent Timer Setting.
Inches Per Revolution at 100% = (Hours/Revolution) (In/Day) Millimeters Per Revolution at 100% = (Hours/Revolution) (mm/Day)
(24)
(24)
Example:
Example:
Hours Per Revolution = 19.5
Hours Per Revolution= 19.5
Inches Per Day = 0.29 in
Millimeters Per Day= 7.3 mm
Inches Per Revolution at 100%=
(19.5) (0.29 in)
Millimeters Per Revolution at 100%=
(19.5) (7.3 mm)
(24)
(24)
= 0.24 Inches Per Revolution at 100%
= 5.9 Millimeters Per Revolution at 100%
6. Determine Inches (millimeters) Per Revolution and Hours Per Revolution for any percent timer setting.
Inches Per Revolution
= (Inches/Revolution at 100%) (100)
Millimeters Per Revolution = (mm/Revolution at 100%) (100)
(Percent Timer Setting)
(Percent Timer Setting)
Example:
Example:
Inches Per Revolution at 50% =
(0.24 in) (100)
Millimeters Per Rev. at 50% =
(5.9 mm) (100)
(50)
(50)
= 0.48 Inches Per Revolution at 50%
= 11.9 Millimeters Per Revolution at 50%
Hours Per Revolution
=
(Hours/Revolution at 100%) (100)
Hours Per Revolution
= (Hours/Revolution at 100%) (100)
(Percent Timer Setting)
(Percent Timer Setting)
Example:
Example:
Hours Per Revolution at 50% =
(19.5) (100)
Hours Per Revolution at 50% =
(19.5) (100)
(50)
(50)
= 39 Hours Per Revolution at 50%
= 39 Hours Per Revolution at 50%
