Operating Instructions for Pumps with Magnetic Couplings

1. Installation location: The ambient temperature at the installation site should be 0–40 °C, and the relative humidity should be below 90%. Please choose a flat location where vibrations from other machines are not transmitted.

Leave sufficient space for maintenance.

2. Base fixation: The base area on which the pump is installed must be larger than the pump base itself. If the mounting area is too small, the pump may be damaged due to stress concentration at the contact point. The pump base must be securely fixed.

3. MD/QHX series pumps are NOT self-priming and must be installed under positive pressure conditions. The distance from the liquid surface to the suction inlet should be more than 30 cm. If the liquid head is too low, air may be drawn in, resulting in excessive wear of the pump bearings.

4. Pump discharge direction: The discharge outlet can be oriented freely, but to allow gas to escape from the pump chamber, it is recommended to direct the outlet upwards.

5. The pump head depends on the properties and temperature of the liquid, as well as the length of the suction pipeline. Keep the pipeline as short as possible and minimize the number of bends and turns.

6. Inlet and outlet valves should be installed as close as possible to the pump connections.

7. Check the voltage on the nameplate before connection. Proper grounding is mandatory.

8. The pump should be installed as close as possible to the tank and below its level (flooded suction installation).

Prohibited installation methods are shown in the figures below.

9. When the pump is used for handling hazardous liquids, flushing lines must be installed so that the internal parts of the pump can be cleaned after disassembly.