PB3 User Instruction
Page 6 of 39
Caution
Start the pump with outlet valve partly opened (Unless otherwise instructed at a specific
point in the user instructions). This is recommended to minimize the risk of overloading
at full flow and damaging the pump at zero flow.
Pumps
may
be started with the valve
further open only on installations where this situation cannot occur. The
pump
outlet
control valve may need to be adjusted to comply with the duty following the run-up
process. (See section 4, Commissioning start-up, operation and shutdown.)
-
Never run the pump dry.
Caution
-
Inlet valves to be fully open when pump is running.
-
Running the pump at zero flow or below the recommended minimum flow
continuously will cause damage to the pump and seals.
-
Low flow rates may cause a reduction in pump/bearing life, overheating of the
pump, instability and cavitation/ vibration.
Caution
Do not run the pump at abnormally high or low flow rates.
Operating at a flow rate higher than normal or at a flow rate with no backpressure on the
pump may overload the motor and cause pump cavitation.
DANGER
Never do maintenance work when the unit is connected to power.
hazardous substances and toxic fluid
When the pump is handling hazardous liquids care must be taken to avoid exposure to
the liquid by appropriate sitting of the pump, limiting personnel access and by operator
training. If the liquid is flammable and/or explosive, strict safety procedures must be
applied
HANDLING COMPONENTS
Many precision parts have sharp corners and the wearing of appropriate safety gloves
and equipment is required when handling these components. To lift heavy pieces above
25 kg use an appropriate crane for the mass and in accordance with current local
regulations.
THERMAL
SHOCK
Rapid changes in the temperature of the liquid within the pump will cause thermal
shock, which can result in damage or breakage of components and should be avoided.
