Service; Technical Data; Enclosure Class; Sound Pressure Level - Grundfos CM Montage- Und Betriebsanleitung

10. Service

If used for a liquid which is injurious to
Caution health or toxic, the pump will be classified
as contaminated.
Before the pump is returned to Grundfos for service,
the safety declaration at the end of these instructions
must be filled in by authorised personnel and
attached to the pump in a visible position.
If Grundfos is requested to service the pump, it must
be cleaned before it is returned.
If proper cleaning is not possible, all relevant
information about the pumped liquid must be
provided.
If the above is not fulfilled, Grundfos can refuse to
accept the pump for service.
Possible costs of returning the pump are to be paid
by the customer.
The safety declaration can be found at the end of these
instructions (only in English).

11. Technical data

11.1 Enclosure class

• IP55 (standard)
• IPx5 (with motor drain plug removed)

11.2 Sound pressure level

The sound pressure level of the pumps is lower than
70 dB(A).

11.3 Ambient temperature

Self-priming pumps:
Caution
The liquid temperature must not exceed 60
°C (140 °F).
Maximum ambient
temperature
2)
55 °C (131 °F)
2)
50 °C (122 °F)
45 °C (113 °F)
40 °C (104 °F)
1)
Only the stainless-steel variant (EN 1.4301 / AISI
304) is suitable for pumping liquids with
temperatures above 90 °C (194 °F).
2)
Does not apply for pumps with PSE approval
(pumps approved for use in Japan).
If the ambient temperature exceeds 55 °C (45 °C for
pumps with PSE approval), do not fully load the
motor due to the risk of overheating. In such cases,
you may need to derate the motor output or use an
oversize motor with a higher rated output. You can
derate the CM pumps in relation to the ambient
temperature without any consequence. Contact
Grundfos for further information. See fig. 13.
P2
[%]
100
90
80
70
60
50
20 25 30 35 40 45 50 55 60 65 70 75 80
Fig. 13 Derating in relation to the ambient
temperature
Liquid temperature
1) + 2)
90 °C (194 °F)
1) + 2)
100 °C (212 °F)
1)
110 °C (230 °F)
1)
120 °C (248 °F)
t [°C]
13