Hawle HAWIDO 1403, Руководство пользователя

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D. Putting out of service and maintenance
1. Putting out of service
The operating valve must first be shut off hydraulically by proceeding as follows:
•
Slowly close the gate valves before and after the valve
•
Slowly close the ball valves (2A, 2B, 2C).
In order to be able to carry out maintenance work on the valve, the solenoid valve must be disconnected
from the power. The electrical supply must be disconnected.
Caution: Electrical work may only be carried out by qualified specialist personnel!
The valve has now been taken out of operation, and a service can be carried out.
2. Maintenance and service
2.1 General information
Through our many years of experience with diaphragm valves that are controlled by the flow medium, we
know that our HAWIDOs normally function trouble-free for many years. Regular maintenance is a
precondition for this, however.
Under normal operating conditions, the following should be carried out:
•
The valve should be checked for correct operation once a year (functional check)
•
The dirt trap upstream of the valve and the filter in the control line should be cleaned once a year
•
The inner working components should be checked and worn parts be replaced every four to five
years (maintenance).
Under unusual operating conditions (e.g. with water that contains quantities of suspended matter, very high
pressure reduction, small flow rates etc.), the functional checks and the service work should be carried out
more frequently.
Maintenance sign:
xx stands for the respective year.
2.2 Annual functional checks
Cleaning the dirt trap in the main line
•
Unscrew the lid
•
Clean the filter with a brush or cloth etc., or replace it
•
Install the filter and screw the lid back on
Cleaning the filter in the control line
•
Unscrew the lid of the filter