lutz DMP 1/2 Betriebsanleitung Seite 25

Submerge applications
1. Fluid must be compatible with fasteners and with intermediate material.
2. Pipe exhaust above the level of the fluid.
High viscosity applications
1. Position the pump close to or below the level of the fluid source.
2. Suction lines should be increased in size – up to three times the size of the inlet manifold.
Dual manifolds may be used when available.
3. Start the pump slowly using a valve on the air line.
Low temperature and UV exposure
1. Polypropylene tends to embrittle at freezing temperature. Pump must be insulated or heated,
otherwise use pumps with different materials of construction.
2. If excessive icing occurs at the pump exhaust, air source must be dried using mechanical
means or through the introduction of ethyl alcohol in the air line.
3. UV rays will damage polypropylene pumps, either shroud the pumps from UV rays or use
pumps with UV stabilized materials.
General Maintenance
1. Check periodically for product or air leakage. Tighten any joint where leakage is occurring.
2. When pumping hazardous or toxic materials, diaphragms should be replaced at regularly
scheduled intervals based upon pump usage.
3. In freezing temperatures, the pump must be completely drained when idle.
4. When pumping highly abrasive fluids reduce discharge flow rate or reduce air pressure to
prolong diaphragm life.
5. If you are pumping a material that will settle or compact the pump must be flushed before
shut down.
D
GB
25