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Start-Up / Maintenance
Page 20
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EX-pump only: also observe relevant standards e.g. DIN EN 60079-10/14 and
DIN EN 50020 for installations in explosion-threatened areas!
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Note all national directives which apply to the installation!
IMPORTANT
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Based on state-of-the-art technology, the manufacturer carefully selects the materials
for parts coming in contact with the medium as specified by the customer.
The manufacturer shall not be liable for any damage caused by metering other media
or media which has been modified with regard to its properties (concentration, density,
temperature, additives, impurities etc.).
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Only specially instructed personnel are permitted to operate the metering pump.
The operator must ensure by applying appropriate accident prevention measures that
operating personnel are not endangered under given operating conditions (pressure,
temperature, aggressivity etc.).
IMPORTANT
•
Refer to the information provided in the product-specific operating instructions.
•
Before starting up, check correct connection of the drive motor as well as the
corresponding additional equipment!
•
Check intake and delivery lines for leaks!
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Check whether necessary flushing lines are connected!
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Provide suitable type of safety overflow valves in all delivery lines!
S Bleed delivery side:
Switch on pump and run at 100 % stroke length until liquid end is full.
Switch off pump.
S Close bleeder on delivery side.
Pump is now ready for operation.
S Open shut-off valve in metering line, operate pump.
S Check cut-in pressure of overflow valve.
S Check delivery capacity and correct if necessary.
IMPORTANT
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If a compressed air vessel is installed on the delivery side, vent at regular intervals!
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Ensure the correct gas admission pressure (approx. 60–80 % of the mean operating
pressure).
•
Observe the information provided in the operating instructions of the frequency
converter if using pumps with speed control.
7
Maintenance
WARNING
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The proper general function, in particular of the drive, must be safeguarded by regular
inspections (leakages, noises, temperatures, possible discoloration due to excess
temperatures....).
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Use original spare parts should exchange become necessary!
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Wear parts (diaphragms, bearings etc.) of metering pumps used in potentially explosive
atmospheres must be replaced after having completed 90 % of their nominal product
life.
•
The lubricant supply must be regularly checked for lubricated pumps, for instance by
checking the fill level, visual inspection for leakages etc.
The pump must never be allowed to overheat due to lack of oil!
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Examine the pump for any oil leaking out and remedy the cause!
The pump must never be allowed to overheat due to lack of oil!
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Check that the pressure relief valve downstream from the pump is functioning correctly!
The pressure relief valve must prevent the gearbox from being overloaded and
overheating in explosion-threatened workplaces!
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EX-Pump only: When cleaning plastic parts, attention must be paid to not generating
any electrostatic charge by rubbing excessively. - see danger sign.
ProMinent
ProMinent
®
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