Use and Care Manual

English (GB)
8
7. Control functions
7.1 Menu overview, SCALA2
Fig. 12 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.
Fig. 13 SCALA2 outlet pressure indication
Fig. 14 Pressure indication table
7.1.2 Indicator lights, SCALA2
* For fault number 4, dry-running, the pump will try to reset
automatically in a sequence of three attempts within the first
minute. After this, eight attempts within an hour and
repeatedly once every 24 hours. For the remaining faults, 1, 2,
3, 5, 6 and 7, the pump will reset whenever the cause has
disappeared or been remedied.
For further information about system status, see section
12.1 Grundfos Eye operating indications.
TM06 3301 5114
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
TM06 4345 2015
TM06 4187 1615
Note
The pressure settings 4.5, 5.0 and 5.5 bar (65, 73
and 80 psi) require a minimum positive inlet
pressure which is maximum 4 bar (58 psi) lower
than the required outlet pressure.
Example: If the required outlet pressure is 5 bar,
the minimum inlet pressure must be 1 bar (14.5
psi).
Indications Description
Operating indications
The operating panel is locked
Power supply failure
The pump is blocked, e.g. the shaft seal has
seized up
Leakage in the system
Dry-running or water shortage*
The maximum pressure has been exceeded
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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