English (GB)
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5.2.2 Type key
6. Servicing the product
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
6.2.1 Lubrication and maintenance
Pumps installed in accordance with these
instructions require very little maintenance.
The motor ball bearings are grease-packed and
sealed for life. No further lubrication is necessary.
If you need to replace a ball bearing, change the
bearing seal.
6.2.2 Filters
Clean chip trays, filters, etc. at regular intervals to
ensure a correct flow of liquid. This will also increase
the pump life.
6.2.3 Periodic checks
Make the following checks at regular intervals,
depending on the conditions and time of operation.
•
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 control devices are operating
satisfactorily.
If the above checks do not reveal any abnormal
operating details, no further checks are necessary.
Should any faults be found, see section
Example
MTD 250 -280 /2 A -W -D -B QQ P
Pump type
Pump size
Installation length [mm]
Number of impellers or stages
Pump version
A = Standard version
Connection
W = Internal thread
WB = Internal NPT thread
Impeller material
A = PAA GF50
B = Bronze
C = Cast iron
D = Ductile cast iron
Shaft seal
A = O-ring seal
B = Bellows seal
Seal ring material
B = Carbon
Q = Silicon carbide
U = Tungsten carbide
V = Ceramic
Rubber material
P = NBR
V = FKM
CAUTION
Biological hazard
Minor or moderate personal injury
- Wear personal protective equipment
and take necessary protective
measures when handling the product.
