Installing and Starting a CDL(F) Vertical Multistage Pump

1. Bolt the pump base down on a level, solid foundation. The pump is tall and must not rock.
2. Support the suction and discharge pipes so their weight is not on the pump.
3. Fit isolating valves on both sides and a check valve on the discharge.
4. Fill the pump through the priming plug and vent all air. The CDL(F) is not self-priming.
5. Check the direction of rotation with a brief start, against the arrow on the pump.
6. Start with the discharge valve almost closed, then open it slowly to the duty point.
7. Check the current against the nameplate and listen for cavitation.
8. If fitted, set the protector for dry running, phase loss and overload.

The two mistakes we see most

• Starting dry, which damages the seal within moments
• Running against a closed valve for long periods, which heats the water inside the pump