Servicing The Product; Contaminated Pumps; Operating Checks; Maintaining The Product - Grundfos LSV Serie Montage- Und Betriebsanleitung

6. Servicing the product

6.1 Contaminated pumps

CAUTION
Biological hazard
Minor or moderate personal injury
- Flush the pump thoroughly with water
and rinse the pump parts in water after
dismantling.
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
returning it.
Costs of returning the product are to be paid by the
customer.

6.2 Operating checks

CAUTION
High sound pressure level
Minor or moderate personal injury
- Use hearing protection.
1. Check the pump and pipes for leaks.
2. Check and record the pressure gauge readings
for future reference.
3. Check the differential pressure. If the differential
pressure is lower than anticipated, the motor may
be overloaded. See description of measuring
instruments in section
instruments.
4. Measure the motor current consumption and
compare the result with the rated current stated
on the motor nameplate. In case of overload,
throttle the outlet isolating valve or throttle valve
until the motor is no longer overloaded.
5. Check the bearings for lubrication and
temperature. Normal temperature is 70 °C (158
°F). The maximum temperature depends on the
type of lubrication. See the lubricating plate on
the pump.
Stop the pump immediately if you notice any defects.
Do not start the pump unless the defects have been
remedied. See section
8. Fault finding the
Report immediately to the supplier that you cannot
remedy the defects.
The operating checks apply both during
the startup procedure and when checking
the pump during normal operation.
20
3.4.6 Measuring
product.

6.3 Maintaining the product

DANGER
Electric shock
Death or serious personal injury
- Before starting work on the pump, make
sure that the power supply has been
switched off and that it cannot be
accidentally switched on.
WARNING
Hot or cold surface
Death or serious personal injury
- Pay attention to the direction of the vent
hole, and ensure that the escaping
water does not cause injury to persons
or damage to the motor or other
components.
- In hot-water installations, pay special
attention to the risk of injury caused by
scalding hot water and hot surfaces.
- In cold-liquid installations, pay special
attention to the risk of injury caused by
cold liquids and cold surfaces.
6.3.1 General information
Routine maintenance is essential to maintain the
pump in a good condition.
A high degree of cleanliness must be maintained
during all maintenance procedures.
Consumable items including spare parts dismantling
and re-assembly:
• tools
• re-assembly procedure.
Detailed information can be found in the service
manual.