Jesco MAGDOS LK, Руководство по эксплуатации

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Maintenance
Maintenance intervals
41
© Lutz-Jesco GmbH 2015
Subject to technical changes.
150225
BA-10221-02-V03
Stepper Motor-driven Diaphragm Dosing Pump
MAGDOS LK
Operating Instructions
12 Maintenance
Lutz-Jesco dosing pumps are produced to the highest quality standards
and have a long service life. Nevertheless, some of their parts are subject
to wear due to operation (e.g. diaphragms, valve seats, valve balls). This
means that regular visual inspections are necessary to ensure a long
operating life. Regular maintenance will protect the dosing pump from
operation interruptions.
DANGER
Danger to life due to electric shock
Live parts can inflict fatal injuries.
ð
Before carrying out any maintenance work, always disconnect the
dosing pump from the power supply.
ð
Secure the dosing pump from accidental power-up.
WARNING
Caustic burns or other burns through dosing media!
While working on the dosing head, valves and connections, you may
come into contact with dosing media.
ð Use sufficient personal protective equipment.
ð
Rinse the dosing pump with a medium (e.g. water) which does not
pose any risk.
ð
Release pressure in hydraulic parts.
ð Never look into open ends of plugged pipelines and valves.
WARNING
Caustic burns or other burns through dosing media!
After connecting the mains supply, residual dosing media in the
dosing head can spray out.
ð
Before connecting the mains supply, connect the dosing lines.
ð
Check that all the screw connections have been tightened
cor rectly and are leak-proof.
CAUTION
Danger of personal injury and material damage!
The dosing pump can generate a pressure that is many times the
rated one. The dosing medium can escape in the case of material
failure or wear on the dosing head, the connection pipe or the seals
that are used.
ð Carry out maintenance work at the recommended intervals.
CAUTION
Increased risk of accidents due to insufficient qualifica-
tion of personnel!
Dosing pumps and their accessories may only be installed, operated
and maintained by personnel with sufficient qualifications. Insuffi cient
qualification will raise the risk of accidents.
ð Ensure that all action is taken only by personnel with sufficient and
corresponding qualifications.
ð
Prevent access to the system for unauthorised persons.
12.1 Maintenance intervals
This table gives you an overview of maintenance work and the intervals
at which you must carry it out. The next few chapters contain instruc tions
for carrying out this work.
Maintenance work to be carried
out
Frequency
Check that piping is seated firmly Regularly
Check that suction and discharge
valves are seated firmly Regularly
Clean suction and discharge valves Regularly
Check that electrical connections
are not damaged Regularly
Tighten dosing head bolts
n
Regularly
n
Before initial commissioning
n
Each time you replace the
diaphragms
Check diaphragms for leakage due
to rupture Regularly
Check that the installed accesso-
ries are functioning correctly Regularly
Check the dosing pump for unusual
noises during operation, unusual
temperatures or smells Regularly
Tab. 39: Maintenance information and maintenance intervals