Periodic Checks; Service; Sound Pressure Level - Grundfos CRK 2 Serie Instrucciones De Instalación Y Funcionamiento

6.3 Periodic checks

At regular intervals, depending on the conditions and
time of operation, the following checks should be
made:
• Check the quantity of liquid and operating pres-
sure.
• Check that there are no leaks.
• Check that the motor is not overheating.
• Check the tripping of the motor starter.
• Check that all controls are operating satisfactorily.
If the above checks do not reveal any abnormal op-
erating details, no further checks are necessary.
Should any faults be found, check the symptoms
with section 9. Fault finding chart.

7. Service

If a pump has been used for pumping
liquids which are injurious to human health
or poisonous, it will be classified as con-
taminated.
A contaminated pump must not be sent to GRUND-
FOS for service until GRUNDFOS has received all
necessary details about the pumped liquid, etc.
Otherwise GRUNDFOS can refuse to accept the
pump for servicing.
Possible costs of returning the pump are to be paid
by the customer.

8. Sound pressure level

L
Motor
[kW]
50 Hz
0.25 <70
0.37 <70
0.55 <70
0.75 <70
1.1 <70
1.5 <70
2.2 <70
3.0 <70
4.0 73
5.5 73
7.5 73
11 80
15 72
18.5 72
22 70
30 70
[dB(A)]
pA
60 Hz
<70
<70
<70
<70
<70
71
71
71
71
78
78
84
77
77
75
84
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