Standstill Heating; Motor Bearing Monitoring; Service; Number" ("Pump Number") - Grundfos CRE Installation And Operating Instructions Manual

Y
1
2
3
0
4
6
"Ramp-up" and "Ramp-down"
Pos. Description
X Time
Y Speed
1 Fixed maximum
2 User-set maximum
3 User-set minimum
4 Fixed initial ramp
5 Fixed final ramp
6 User-set ramp-up
7 User-set ramp-down
Factory setting
See the section on factory settings.
Related information
9.2 Factory settings

8.21 "Standstill heating"

Pump variant
CME
CRE, CRIE, CRNE, CRKE, SPKE,
MTRE
You can use this function to avoid condensation in humid
environments. When you set the function to "Active" and the pump
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 motor including the electronic parts in the drive.
Remember to remove the drain plugs and fit a cover over
the motor.
Factory setting
See the section on factory settings.
Related information
9.2 Factory settings

8.22 "Motor bearing monitoring"

You can set the motor bearing monitoring function to these values:
• "Active"
• "Not active".
When the function is set to "Active", a counter in the controller starts
counting the mileage of the bearings.
52
Factory setting
See the section on factory settings.
X
5
Related information
7

8.23 "Service"

For motors of 15 Hp (11 kW) and below, it is not possible to
relubricate the bearings.
"Time to next service" ("Motor bearing service")
This display shows when to replace or relubricate the motor
bearings. The controller monitors the operating pattern of the motor
and calculates the period between bearing replacements or
relubrications.
Displayable values:
•
•
•
•
•
•
•
"Bearing replacements"
This display shows the number of bearing replacements that have
"Standstill heating"
been done during the lifetime of the motor.
●
"Bearings replaced" ("Motor bearing maintenance")
●
When the bearing monitoring function is active, the controller gives
a warning when the motor bearings are due to be replaced.
When you have replaced the motor bearings, press [Bearings
replaced].
Related information

8.24 "Number" ("Pump number")

Pump variant
CME
CRE, CRIE, CRNE, CRKE, SPKE,
MTRE
You can allocate a unique number to the pump. This makes it
possible to distinguish between pumps in connection with GENIbus
communication.
Factory setting
See the section on factory settings.
Related information
The counter continues counting even if the function is
changed to "Not active", but a warning will not be given
when it is time for replacement or relubrication.
When the function is changed to "Active" again, the
accumulated mileage is again used to calculate the
replacement or relubrication time.
9.2 Factory settings
"Motor bearing monitoring" must be activated in order for
the motor to indicate that the bearings must be replaced
or relubricated. See the section on motor bearing
monitoring.
"in 2 years"
"in 1 year"
"in 6 months"
"in 3 months"
"in 1 month"
"in 1 week"
"Now".
8.22 "Motor bearing monitoring"
9.2 Factory settings
"Number"
("Pump number")
●
●