8.7 Priority of Settings
With Grundfos GO Remote, you can set the motor to operate at
maximum speed or to stop.
If two or more functions are enabled at the same time, the motor
operates according to the function with the highest priority.
If you have set the motor to maximum speed via the digital input,
the motor operating panel or Grundfos GO Remote can only set the
motor to
Manual
or
Stop
.
The priority of the settings appears from the table below:
Priority
Start/stop
button
Grundfos GO Remote or operating panel on
motor
Digital input
Bus communication
1
Stop
2
Stop
3
Manual
4
Maximum speed
/
User defined speed
5
Stop
6
User defined speed
7
Stop
8
Maximum speed
/
User defined
speed
9
Minimum speed
10
Start
11
Maximum speed
12
Minimum speed
13
Minimum speed
14
Start
15
Start
*
Stop
and
Maximum speed
settings made with Grundfos GO Remote or on the motor operating panel can be overruled by another operating-mode command
sent from a bus, for example
Start
. If the bus communication is interrupted, the motor resumes its previous operating mode, for example
Stop
, that was
selected with Grundfos GO Remote or the motor operating panel.
9. Servicing the product
DANGER
Electric shock
Death or serious personal injury
‐
Switch off the incoming power supply before you start
any work on the product or connected pumps.
‐
Make sure that the power supply cannot be switched
on accidentally.
9.1 Maintenance
The internal pump parts are maintenance-free.
The motor has maintenance-free, greased-for-life bearings.
9.2 Motor cleaning
Keep motor cooling fins and fan blades clean to ensure adequate
cooling of the motor and electronics.
You must keep the motor clean to ensure sufficient cooling of the
motor. If the product is installed in dusty environments, clean and
check the motor regularly. Take the enclosure class of the motor
into account when cleaning.
9.3 Refilling of the diaphragm tank
We recommend that you refill the tanks with nitrogen gas
once a year.
10. Taking the product out of operation
10.1 Maintaining the product during standstill
10.1.1 Frost protection
If the product is not being used during periods of frost, it must be
drained to avoid damage. Remove the filling and drain plugs. Do
not refit the plugs until the product is put into operation again.
10.1.2 "Standstill heating"
Use this function to avoid condensation in humid environments.
When you set the function to
Active
and the product is in operating
mode
Stop
, a low AC voltage is applied to the motor windings. The
voltage is not high enough to make the motor rotate, but ensures
that sufficient heat is generated to avoid condensation in the
product, including the electronic parts in the drive.
Remember to remove the drain plugs and fit a cover over
the product.
11. Fault finding the product
DANGER
Electric shock
Death or serious personal injury
‐
Switch off the power supply before you start any work
on the product.
‐
Make sure that the power supply cannot be switched
on accidentally.
Fault finding and fault correction must be carried out by qualified
persons.
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English (US)
