Seko 43651 Manuel D'installation page 9

3. START-UP
Electrical connection:
• connect electric motor to mains (power source)
• check the direction of rotation of the electric motor; an arrow on the electric motor shows the correct direction of
rotation
The electric motor should be connected by qualified personnel only!
WARNING
Don't start the pump with the suction and/or discharge check valves closed
Don't close check valves while the pump is in operation
Before starting the pump check the following points:
•
check mechanism for the correct oil filling
•
check pumphead for the correct filling of the hydraulic liquid
•
check metering pump for overpressure protection (pressure relief valve installation)
•
verify that all hydraulic connections are correctly tight
•
position adjustment knob at "zero" flow rate (see para 1.3.1)
•
start the pump without discharge pressure and increase progressively the flow rate up to 100%
•
keep the pump in operation for few minutes
WARNING
DON'T EXCEED THE MAXIMUM PERFORMANCE STENCILLED ON THE PUMP LABEL
If no pressure gauge is fitted on the plant, the installation of a temporary pressure gauge is recom-
mended in order to check that the actual pressure at the start-up doesn't exceed the maximum allowable
pressure.

pumps are self-priming, however some priming problem could be encountered with pumps having very low
flow rate, small plunger diameter, with back pressure valves installed and in presence of high discharge pres-
sure. In these cases it could be necessary to aid priming purging air from pumphead and suction line.
WARNING
If the pumped liquid is toxic, poisonous, aggressive, flammable or
dangerous, use particular care avoiding accidental leakages
ing start-up or maintenance operations.
Moreover follow all the recommendations of the manufacturer for handling and the local
laws relevant to safety during handling and disposal of dangerous
4. MAINTENANCE
4.1 Precautions
• Before servicing pump or plant verify that all electric connections (power and control) have been disconnected
from mains and are no more fed.
• Depressurize completely pump and pipes and drain the section in which maintenance is required
• Always work wearing the required safety protections.
• Don't pour in the ambient polluting substances such as pumped chemicals, hydraulic liquid, lubricating oil a.s.o.
• Before servicing pump or plant read carefully the technical specification of the handled fluids with particular
respect to the actions that must be done in case of accidental contact with a dangerous fluid.
SPR0136001 Rev. 5.2 EN
for any reason
through gaskets or pipes
substances.
dur-
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