Grundfos Hydro 1000, Инструкция по установке и эксплуатации

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10
9. Parts list
Fig. 11
10. Technical data
10.1 Sound pressure level
For sound pressure level, see installation and operating instruc-
tions for CR pumps.
The sound pressure level for a number of pumps can be calcu-
lated as follows:
L
max.
= L
pump
+ (n - 1) x 3.
L
max.
= Maximum sound pressure level.
L
pump
= Sound pressure level for one pump.
n = Number of pumps.
10.2 Hydraulic data
Minimum pre-pressure:
The minimum pre-pressure “H” in metres head required to avoid
cavitation in the pumps is calculated as follows:
H = p
b
x 10.2 - NPSH - H
f
- H
v
- H
s
p
b
= Barometric pressure in bar.
Barometric pressure can be set to 1 bar.
NPSH = N et P ositive S uction H ead i metres head
(to be read from the NPSH curve at the highest flow).
See installation and operating instructions for
CR pumps.
H
f
= Friction loss in suction pipe in metres head.
H
v
= Vapour pressure in metres head, t
m
= liquid
temperature.
See installation and operating instructions for
CR pumps.
H
s
= Safety margin of minimum 0.5 metres head.
10.3 Electrical data
Supply Voltage: 3 x 400 V +6%/–10%, 50 Hz, PE.
Pos. Description Number
1 Suction manifold 1
2 Discharge manifold 1
3 Base frame 1
4 Stand 1
5 Control box 1
6 CR pump 2-4
7 Non-return valve 1 per pump
8 Isolating valve 2 per pump
9 Pressure switch 1 per pump
10 Pressure gauge 1
T
M
00
97
41
03
97
Hydro 1000
5
10
4
6
2
9
1
8
7
3
Terminal
designation
or number
Function CS 1000 Technical data
J1
1
Input for thermal relay
pump 1
2
Input for thermal relay
pump 2
3
Input for thermal relay
pump 3
4
Input for thermal relay
pump 4
5
6
Common terminal for
multiplug J1
J2
1 - 2
Input for dry-running pro-
tection
3 - 4
Input for maximum pres-
sure protection
5 - 6 Input for pressure switch 1
7 - 8 Input for pressure switch 2
9 - 10 Input for pressure switch 3
11 - 12 Input for pressure switch 4
J3
1 - 2 Output for contactor K1 AC 24 V
3 - 4 Output for contactor K2 AC 24 V
5 - 6 Output for contactor K3 AC 24 V
7 - 8 Output for contactor K4 AC 24 V
J5
1 - 2
Electricity supply for
CS 1000
AC 24 V
3 - 4
Electricity supply for
CS 1000
AC 18 V
5 - 6
Electricity supply for
CS 1000
AC 8 V
J6 1 - 3 Fault relay
Potential-free
changeover
contacts.
Maximum con-
tact load:
250 V / 3.0 A,
AC 1
Subject to alterations.