Grundfos Inline Single Stage Pump TP 50-30/2

Alternate twin-head duty and standby pumps on a regular basis, i.e. once a week, to ensure an even distribution of the operating hours on both pumps

If twin-head pumps are used for pumping domestic hot water, the duty and standby pumps must be alternated on a regular basis, i.e. once a day, to avoid blocking of the standby pump due to deposits (calcareous deposits, etc.)

Automatic pump change is recommended, is it set up?

Sign off on the daily pump maintenance

Warning: Before starting work on the pump, make sure that the power supply has been switched off and that it cannot be accidentally switched on. Make sure that the escaping liquid does not cause injury to persons or damage to the motor or other components. In hot-liquid installations, pay special attention to the risk of injury caused by scalding hot liquid. In cold-liquid installations, pay special attention to the risk of injury caused by the cold liquid.

Area secured from accidental power switch on?

Area secured from escaping liquid?

Precautions taken for hot-liquid installations?

Precautions taken for cold-liquid installations?

Oil injected on the shaft between the motor stool and the coupling?

Motor checked at regular intervals?

Motor kept clean for adequate ventilation?

Is the pump installed in a dusty environment?

If the pump is installed in a dusty environment, follow the steps below:

Sign off on the motor maintenance

For motors up to 11 kW, no lubrication is required

For motors of 11 kW and up, follow the next steps

Motor greased in accordance with the indications on the motor nameplate

Motor lubricated with a lithium-based grease

Technical specification of the grease corresponds to DIN 51825, K3N, or better

Viscosity of the basic oil at 40 °C (104 °F)

Viscosity of the basic oil at 100 °C (212 °F)