Grundfos SCALA Series, Installation And Operating Instructions Manual

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English (GB)
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7. Control functions
7.1 Menu overview, SCALA2
Fig. 14 SCALA2 operating panel
7.1.1 Pressure indicator, SCALA2
The pressure indicator shows the required outlet pressure from
1.5 to 5.5 bars (22 to 80 psi) in 0.5 bar (7.5 psi) intervals.
The illustration below shows a pump set to 3 bar (44 psi)
indicated by two green lights, and a pump set to 3.5 bar (51 psi)
indicated by one green light.
Flashing green lights indicate that the pump has automatically
lowered the pressure. See section
4.3.3 Self-learning setpoint .
Fig. 15 SCALA2 outlet pressure indication
Fig. 16 Pressure indication table
7.1.2 Indicator lights for SCALA2
* For fault number 4, dry running, the pump must be reset
manually.
For fault number 4, water shortage, and the remaining faults,
1, 2, 3, 5, 6 and 7, the pump will reset whenever the cause has
disappeared or been remedied. See section
8.3.3 Auto reset .
For further information about system status, see section 12. Fault
finding the product .
T
M
06
33
01
51
14
SCALA2 Function
On/off
Increases the outlet pressure.
Decreases the outlet pressure.
Resets alarms.
Indicates the required outlet pressure.
Indicates that the pump has been stopped manually.
Indicates that the operating panel is locked.
TM
06 434
5 201
5
TM
06 41
87 41
17
Indications Description
Operating indications
The operating panel is locked.
Power supply failure
The pump is blocked, for instance the shaft seal
has seized up.
Leakage in the system
Dry running or water shortage*
The maximum pressure has been exceeded or
the setpoint cannot be reached.
The maximum runtime has been exceeded.
The temperature is outside the range.
BAR PSI Water colum kPa MPa
[m]
5.5 80 55 550 0.55
5.0 73 50 500 0.50
4.5 65 45 450 0.45
4.0 58 40 400 0.40
3.5 51 35 350 0.35
3.0 44 30 300 0.30
2.5 36 25 250 0.25
2.0 30 20 200 0.20
1.5 22 15 150 0.15
}
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