Contaminated Products; Maintaining The Product; Filters; Periodic Checks - Grundfos MTC Serie Instrucciones De Instalación Y Funcionamiento

6.1 Contaminated products

The product will be classified as contaminated if it
has been used for a liquid which is injurious to health
or toxic.
If you request Grundfos to service the product,
contact Grundfos with details about the liquid before
returning the product for service. Otherwise,
Grundfos can refuse to accept the product for
service.
Any application for service must include details
about the liquid.
Clean the product in the best possible way before
you return it.
Costs of returning the product are to be paid by the
customer.

6.2 Maintaining the product

Pumps installed in accordance with these
instructions require very little maintenance.
Shaft seal
The mechanical shaft seal is self-adjusting and has
wear-resistant seal rings which are lubricated and
cooled by the pumped liquid.
Pump bearings
The pump bearings are lubricated by the pumped
liquid.
Motor bearings
The motor ball bearings are grease packed and
sealed for life. No further lubrication is necessary.
Pumps from 5 hp (4 kW) and up have angular
contact bearings.

6.3 Filters

Chip trays, filters, etc. must be cleaned at regular
intervals to ensure a correct flow of liquid.

6.4 Periodic checks

At regular intervals, depending on the conditions and
time of operation, the following checks must be
made:
• Check the quantity of liquid and operating
pressure.
• Check that there are no leaks.
• Check that the motor is not overheating.
• Check the tripping of the motor-protective circuit
breaker.
• Check that all controls are operating
satisfactorily.
If the above checks do not reveal any abnormal
operating details, no further checks are necessary.
Should any faults be found, check the symptoms in
section 7. Fault finding the product.

7. 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.
- Connect the pump to an external main
switch close to the pump and to a
motor-protective circuit breaker or a
CUE frequency converter.
- Make sure you can lock the main switch
in OFF position (isolated). Type and
requirements as specified in EN 60204-
1, 5.3.2.
CAUTION
Toxic liquids
Minor or moderate 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.
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