Fault Finding The Product - Grundfos MTS Serie Manual De Instrucciones

11. Fault finding the product

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
Minor or moderate personal injury
- Wear personal protective equipment.
CAUTION
Toxic liquids
Minor or moderate personal injury
- Wear personal protective equipment.
Fault
Fault description
number
1 The pump is not pumping.
The pump performance is
2
insufficient.
The pump performance is
3
excessive.
4 There is no inlet pressure.
24
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.
Possible faults are identified by a fault number in the
table below. This number identifies the cause and
remedy in the fault finding list.
If faults occur which are not specified in the following
table or cannot be traced back to the specified
causes, please consult Grundfos.
Fault
Fault description
number
5 Unstable pump operation (jerks and noise).
6 The pump is jammed.
7 The pump is leaking.
8 Excessive motor power input.