Grundfos CR Serie Instrucciones De Instalación Y Funcionamiento página 17

For lifting instructions, see section
product.
WARNING
Falling objects
Death or serious personal injury
- Keep the product in a stable and fixed
position when working on it.
WARNING
Corrosive liquids
Death or serious personal injury
- Wear personal protective equipment.
WARNING
Toxic liquids
Death or serious personal injury
- Wear personal protective equipment.
CAUTION
Hot or cold liquid
Minor or moderate personal injury
- Wear personal protective equipment.
CAUTION
Hot or cold surface
Minor or moderate personal injury
- Make sure that no one can accidentally
come into contact with hot or cold
surfaces.
6.3.1 Pump
The pump bearings and the shaft seal are
maintenance-free.
2.4 Lifting the 6.3.2 Motor
Carry out maintenance as described in the
instructions for the motor which are supplied with the
pump.
Motor bearings
Motors not fitted with grease nipples are
maintenance-free.
Motors fitted with grease nipples must be lubricated
with a high-temperature, lithium-based grease. See
the instructions on the fan cover.
In the case of seasonal operation where the motor is
idle for more than 6 months of the year, we
recommend that you grease the motor when you
take the pump out of operation.
Depending on the ambient temperature, replace or
lubricate the motor bearings according to the table
below. The table applies to 2-pole motors. The
number of operating hours stated for bearing
replacement are guidelines only.
Motor
size
[kW]
0.37-
0.75
Motor
size
[kW]
18.5
30-55
Intervals for 4-pole motors are twice as long as those
for 2-pole motors.
If the ambient temperature is lower than 40 °C, then
replace or lubricate the bearings at the intervals
mentioned under 40 °C.
Bearing replacement interval
[operating hours]
40 °C 45 °C
18000 -
1.1-
20000 15500
7.5
Lubrication interval [operating hours]
40 °C 45 °C
11-
4500 3400
22 4000 3100
4000 3000
75 2000 1500
50 °C 55 °C 60 °C
- - -
12500 10000 7500
50 °C 55 °C 60 °C
2500 1700 1100
2300 1500 1000
2000 1500 -
1000 500 -
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