Samson 42-37, Монтаж и эксплуатация

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7-2 EB 3017 EN
Operation
7.2 Adjusting the flow set point
1. Unscrew the cap (1.3).
2. Undo lock nut (1.2). Turn the set point
adjuster (1.4) clockwise as far as it will
go.
3. Find the flow rate set point in the dia -
gram and determine the associated num-
ber of turns.
4. Based on a closed restriction, turn the set
point adjuster for the flow rate (1.4)
counterclockwise (

) to adjust this value.
Wait until the plant has settled. If neces -
sary, readjust.
5. Check the flow rate at the heat meter and
correct it, if necessary.
6. Lock the restriction screw in place with
the nut (1.2) and screw the cap (1.3)
back on after the required flow rate is
reached.
7. Close a possibly open bypass valve
again.
8. Lead-seal the adjusted value, if neces-
sary.
Table 7-2: Flow rate set point ranges for water
Type 2423 · Balanced by a bellows
Valve size DN 15 20 25 32 40 50 65 80 100 125 150 200 250
Flow rate set point ranges for water in m³/h
Diff. pres-
sure across
restriction
∆p
restriction
0.2 bar
0.05 to
2
0.15 to
3
0.25 to
3.5
0.4 to
7
0.6 to
11
0.9 to
16 2 to 28
3.5 to
35 1)
6.5 to
63
11 to
80
18 to
120
20 to
180
26 to
220
0.5 bar
0.15 to
3
0.25 to
4.5
0.4 to
5.3
0.6 to
9.5
0.9 to
16 2 to 24
3.5 to
40
6.5 to
55
11 to
90
18 to
120
20 to
180
26 to
260
30 to
300
Max. perm. diff.
pressure ∆p
25 bar 20 bar 16 bar 12 bar 10 bar
Type 2423 · Balanced by a diaphragm
Valve size DN 65 80 100 125 150 200 250
Flow rate set point ranges for water in m³/h
Diff. pres-
sure across
restriction
∆p
restriction
0.2 bar 2 to 28 3.5 to 35
1)
6.5 to 63 11 to 120 18 to 180 20 to 320 26 to 350
0.5 bar 3.5 to 40 6.5 to 55 11 to 90 18 to 180 20 to 260 26 to 450 30 to 520
Max. perm.diff.
pressure ∆p
10 bar 12 bar 10 bar
1)
7 to 35 m³/h (160 cm² actuator), 7 to 40 m³/h (320 cm² actuator)