Grundfos CRK 2, Инструкция по установке и эксплуатации

Страница: 14 / 408

En
gl
is
h (
G
B)
14
8. Servicing the product 8.1 Maintaining the product
Pump bearings and shaft seal are maintenance-free.
8.1.1 Motor bearings
Motors not fitted with grease nipples are
maintenance-free.
Motors fitted with grease nipples should be
lubricated with a high-temperature, lithium-based
grease. See the instructions on the fan cover.
In the case of seasonal operation (motor is idle for
more than 6 months of the year), we recommend to
grease the motor when the pump is taken out of
operation.
Depending on the ambient temperature, the motor
bearings must be replaced or lubricated according to
the table below. The table applies to 2-pole motors.
The number of operating hours stated for bearing
replacement are guidelines only.
Intervals for 4-pole motors are twice as long as those
for 2-pole motors.
If the ambient temperature is lower than 40 °C,
bearings must be replaced/lubricated at the intervals
mentioned under 40 °C.
WARNING
Electric shock
Death or serious personal injury
•
Before starting any work on the
product, make sure that the power
supply has been switched off and that
it cannot be accidentally switched on.
WARNING
Moving parts
Death or serious personal injury
•
Tighten the coupling screws to the
correct torque.
• Install the coupling guards securely to
the pump with the screws intended for
this purpose.
CAUTION
Corrosive liquids
Death or serious personal injury
•
Wear personal protective equipment.
CAUTION
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.
Motor
size
[kW]
Bearing replacement interval
[operating hours]
40 °C 45 °C 50 °C 55 °C 60 °C
0.37 - 0.75 18000 - - - -
1.1 - 7.5 20000 15500 12500 10000 7500
Motor
size
[kW]
Lubrication interval
[operating hours]
40 °C 45 °C 50 °C 55 °C 60 °C
11 - 18.5 4500 3400 2500 1700 1100
22 4000 3100 2300 1500 1000
30-55 4000 3000 2000 1500 -
75 2000 1500 1000 500 -