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ISO PRO Centrifugal Pump
Section 1................................................................Introduction and Safety
5. MANDATORY SAFETY ACTION
ENSURE CORRECT LUBRICATION
START THE PUMP WITH OUTLET VALVE PARTLY OPENED
This is recommended to minimise the risk of overloading and damaging the pump and motor at
full or zero flow. The pump outlet control valve may need to be adjusted to comply with the duty
following the run-up process. (See section 5, Commissioning start-up, operation and shutdown.)
NEVER RUN THE PUMP DRY
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 itself and to the seal. Restriction of suction may cause cavitation resulting in
damage to the pump.
PREVENT EXCESSIVE EXTERNAL PIPE LOAD
Do not use pump as a support for piping. Pipe supports and expansion couplings recommended.
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 back pressure on the pump
may overload the motor and cause cavitation. Low flow rates may cause a reduction in pump/
bearing life, overheating of the pump, instability and cavitation/ vibration.
NEVER DO MAINTENANCE WORK WHEN THE UNIT IS CONNECTED TO POWER
HAZARDOUS LIQUIDS
When the pump is handling hazardous liquids care must be taken to avoid exposure to the liquid
by appropriate setting of the pump, limiting personnel access and by operator training. If the
liquid is flammable and/or explosive, strict safety procedures must be applied.
Gland packing must not be used when pumping hazardous liquids.
DRAIN THE PUMP AND ISOLATE PIPEWORK BEFORE DISMANTLING THE PUMP
The appropriate safety precautions should be taken where the pumped liquids are hazardous.
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 (55 Ib)
use a crane appropriate for the mass and in accordance with current local regulations.
GUARDS MUST NOT BE REMOVED WHILE THE PUMP IS OPERATIONAL
The unit must not be operated unless coupling guard is in place. Failure to observe this warning
could result in injury to operating personnel.
THERMAL SHOCK
Rapid changes in the temperature of the liquid within the pump can cause thermal shock, which
can result in damage or breakage of components and should be avoided.
DO NOT APPLY HEAT TO REMOVE IMPELLER
Trapped lubricant or vapor could cause an explosion.
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