English (GB)
11
7. Technical data
7.1 Operating conditions
7.1.1 Minimum flow rate
7.1.2 Maximum number of starts
Maximum number of starts per hour: 100.
7.2 Sound pressure level
The sound pressure level of the pumps is lower than
70 dB(A).
8. Disposing of the product
This product or parts of it must be disposed of in an
environmentally sound way:
1. Use the public or private waste collection service.
2. If this is not possible, contact the nearest
Grundfos company or service workshop.
The crossed-out wheelie bin symbol on
a product means that it must be
disposed of separately from household
waste. When a product marked with this
symbol reaches its end of life, take it to a
collection point designated by the local
waste disposal authorities. The separate collection
and recycling of such products will help protect the
environment and human health.
See also end-of-life information at
www.grundfos.com/product-recycling.
5.
The pump runs
but gives no liquid
or the pump
capacity is not
constant.
a)
The pump strainer is partly blocked by
impurities.
Clean the strainer.
b)
The liquid level in the tank is too low. Increase the liquid level.
c)
The pump rotates in the wrong
direction.
Change the direction of rotation of the
motor.
Fault
Cause
Remedy
Pump type
MTH
Minimum liquid temperature [°C]
-10
Maximum liquid temperature [°C]
+90
Maximum ambient temperature [°C]
+40
Maximum operating pressure [bar]
10
Enclosure class
IP54
Pump type
Minimum flow rate [l/min]
At a liquid
temperature
of 80 °C
At a liquid
temperature
between 80
and 90 °C
MTH 2 and 4
3
8
MTH 8
13
33
MTH 10 and 15
20
50
