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10

8. Setting the product

The pump will remember the controller settings even if it is turned 
off.

8.1 Setting the outlet pressure

Adjust the outlet pressure by pressing 

.

8.2 Locking and unlocking the operating panel

The operating panel can be locked, which means that the buttons 
do not function and no settings can be changed accidentally.

How to lock the operating panel

1. Hold down the 

 buttons simultaneously for 3 seconds.

2. The operating panel is locked when 

 symbol lights up.

How to unlock the operating panel

1. Hold down the 

 buttons simultaneously for 3 seconds.

2. The operating panel is unlocked when 

 symbol turns off.

8.3 Expert settings, SCALA2

The expert setting menu allows the installer to toggle between the 
following functions:
• self-learning
• auto reset
• anti cycling
• maximum continuous operating time.

8.3.1 Accessing the expert settings

Proceed as follows:
1. Hold down the 

 button for 5 seconds.

2. The 

 symbol will start flashing to indicate that the expert 

settings are active.

The pressure indicator now acts as the expert menu. A flashing 
green diode is the cursor. Move the cursor using the 

 

buttons, and toggle the selection on or off using the 

 button. 

The diode for each setting will light up when the setting is active.

Fig. 17

Expert menu overview

8.3.2 Self-learning function

The factory setting for this function is "on".

On

If the pump cannot reach the user-defined pressure setpoint, the 
self-learning function will automatically adjust the setpoint.
The pump will lower the setpoint to either 4.5, 3.5 or 2.5 bar (65, 
51 or 36 psi).
The self-learned setpoint is indicated on the operating panel by 
one flashing green light.
After every 24 hours, the pump will automatically attempt to revert 
to the original user-defined setpoint. If this is not possible, the 
pump will again return to the self-learned setpoint. The pump will 
continue to operate with the self-learning setpoint, until the 
user-defined setpoint can be reached.
Example:
The user-defined pressure is set to 5 bar (72 psi), indicated by 
constant green lights on the pressure indicator panel.
The pump is unable to reach this pressure due to negative 
pressure on the inlet side.
The self-learning function automatically adjusts the setpoint to 3.5 
bar (51 psi), indicated by one flashing green light on the pressure 
indicator panel.
After 24 hours, the pump will automatically try to adjust the 
setpoint back to 5 bar (72 psi).

Fig. 18

User-defined setpoint (left) and self-learned setpoint 
(right)

How to reset the self-learned setpoint

1. You can manually reset the settings by pressing any button on 

the operating panel. The pump will immediately try to reach 
the original setpoint.

2. If the pump keeps reducing the setpoint due to self-learning, 

we recommend to reduce the setpoint manually on the 
operating panel.

Off

If you set the self-learning function to off and the pump is unable 
to reach the desired setpoint, the pump will show alarm 5.

Expert settings are for installers only.

Move cursor up.

Move cursor down.

Toggle settings.

TM

06

 43

46

 41

1

7

 

Auto reset

Anti cycling
Maximum continuous 
operating time

Exit expert menu

Self-learning

TM

07

 00

78

 41

1

7

TM

07

 00

79

 41

1

7

Summary of Contents for SCALA Series

Page 1: ...SCALA Installation and operating instructions GRUNDFOS INSTRUCTIONS http waterheatertimer org Water heater recirculation system html...

Page 2: ...9 8 Setting the product 10 8 1 Setting the outlet pressure 10 8 2 Locking and unlocking the operating panel 10 8 3 Expert settings SCALA2 10 8 4 Resetting to factory settings 11 9 Servicing the produ...

Page 3: ...1 25 bar 18 psi In case of suction lift of more than six metres the pipe resistance on the outlet side must be at least two metres water column or 3 psi at any given flow in order to obtain optimum op...

Page 4: ...f the flexible hose Fig 4 How to reduce noise in the installation 3 3 5 Installation examples Fittings hoses and valves are not supplied with the pump We recommend to follow the installation examples...

Page 5: ...ction lift is 8 m 26 ft H2 Inlet pipe must be submersed at least 0 5 m 1 64 ft TM06 4348 4117 Pos Description 1 Highest tapping point 2 Pipe hangers 3 Isolating valve 4 Flexible hoses 5 Drain to sewer...

Page 6: ...ertain that the pump is connected only to a properly grounded grounding type receptacle protective earthing If national legislation requires a Residual Current Device RCD a Ground Fault Circuit Interr...

Page 7: ...ent of an internal leakage occurs the liquid will be drained through the bottom of the pump Install the pump in such a way that no undesirable collateral damage can arise 5 Handling and storing the pr...

Page 8: ...temperature 13 Minimum and maximum rated power 14 Model 15 Voltage and frequency 16 Approvals 17 Minimum and maximum rated current DK 8850 Bjerringbro Denmark SCALA2 3 45 AKCHDE Model A 200 240V 50 60...

Page 9: ...e 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 TM06 3301 5114 SCALA2 Function On off Increas...

Page 10: ...tpoint The pump will lower the setpoint to either 4 5 3 5 or 2 5 bar 65 51 or 36 psi The self learned setpoint is indicated on the operating panel by one flashing green light After every 24 hours the...

Page 11: ...bottom and can easily be removed and cleaned with a stiff brush See fig 19 Clean the insect filter once a year or as needed Fig 19 Insect filter 9 1 2 Inlet and outlet valves The pump is maintenance f...

Page 12: ...uct 4 The pump will remember the controller settings even if it is turned off 10 1 Deblocking the pump The end cover incorporates a plug which can be removed by means of a suitable tool This makes it...

Page 13: ...reset function in the service menu Grundfos Eye Indication Description No lights are on The power is off The pump is not running Two opposite green indicator lights running in the direction of rotatio...

Page 14: ...completely or partly open position Clean repair or replace the non return valve See section 9 Servicing the product 2 The pump is running a Leakage from the pipe system or the non return valve is not...

Page 15: ...ump but it runs only for a few seconds Yes a Dry running or water shortage Check the water source and prime the pump Yes b The inlet pipe is blocked by impurities Clean the inlet pipe Yes c The foot o...

Page 16: ...ontact the nearest Grundfos company or service workshop See also end of life information on www grundfos com product recycling Temperature C F Maximum ambient temperature 1 x 208 230 V 60 Hz 45 113 1...

Page 17: ...8 5005 Korea GRUNDFOS Pumps Korea Ltd 6th Floor Aju Building 679 5 Yeoksam dong Kangnam ku 135 916 Seoul Korea Phone 82 2 5317 600 Telefax 82 2 5633 725 Latvia SIA GRUNDFOS Pumps Latvia Deglava biznes...

Page 18: ...8564 The name Grundfos the Grundfos logo and be think innovate are registered trademarks owned by Grundfos Holding A S or Grundfos A S Denmark All rights reserved worldwide Copyright Grundfos Holding...

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