C
−
LRV lift control valve
Operation
300−I−9010212−E−10/08.08
5.2
Calculating the demand values for maximum speed
The demand values are shown on a label on the C−DELCON’s
microprocessor
The demand values for the maximum UP and DOWN speeds can be
calculated from the following table:
Valve type
Flow range, Q
[l/min.]
Flow ring
Conversion
C−LRV 175
15–45
46–90
91–250
R45
R90
R250
1V <=> 4.8l/min.
1V <=> 9.7l/min.
1V <=> 29.1l/min.
C−LRV 350
251–500
R500
1V <=> 52.2l/min.
C−LRV 700
400–1000
R1000
1V <=> 112.0l/min.
C
−
LRV 175
−
120 / 150
−
21 / 45
R 250
−
K 251 / 6
−
80 / 55 bar
Calculation example
Flow rate UP (Q)
120l/min.
Flow rate DOWN (Q)
150l/min.
Valve selection:
Valve type
C−LRV 175
Flow range
91–250l/min. *
Flow ring
R250
Conversion
1V <=> 29.1l/min. *
Conversion:
Flow rate UP:
120[l/min] / 29.1[l/min]
=
4.12V
Fast UP
Flow rate DOWN:
150[l/min] / 29.1[l/min]
=
5.15V
Fast DOWN
→
Settings in the C−DELCON
* These values are taken from the above table.