Edwards nXR120i, Инструкция по эксплуатации

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7.4 Clean the external fan grill
If the fan cover is not kept clean, the air flow over the pump can be restricted and the
pump may overheat.
To clean the fan grill:
1. Switch off the pump and disconnect from the electrical supply.
2. Use a dry cloth and a soft brush to remove dirt and deposits on the fan cover.
7.5 Replace the pump bearings
The service indicator, (flashing ON 3 sec/OFF 1 sec) is activated to indicate that a bearing
replacement service interval has been reached. Bearing wear cannot always be detected
under normal operating conditions. This service interval is a recommendation that a
bearing replacement is required and is useful in the preventative maintenance plan.
Note:
Failure to replace the pump bearings on time can damage the pumping mechanism.
To reset the service indicator, refer to Table: Service indicator codes .
Bearing replacement is not possible by the customer, the pump must be returned to a
Service Technology Centre for maintenance.
7.6 Replace the pump controller
The service indicator, (flashing ON 3s / OFF 3s) is activated to indicate that the pump
controller must be replaced. Contact us for further details.
To reset the service indicator, refer to
Table: Service indicator codes .
Controller replacement is not possible by the customer, the pump must be returned to a
Service Technology Centre for maintenance.
7.7 Electrical safety check
Test the earth continuity and the insulation resistance of the pump system in accordance
with local regulations for the periodic test of electrical equipment.
The earth continuity must be less than 0.1 Ω and the DC insulation resistance greater
than 1.0 MΩ. If the pump fails any of these tests, contact us or the supplier.
7.8 Service indicator codes
The nXRi controller has a service indicator, refer to Figure: Interface control panel . The
service indicator will flash a specific code whenever a service interval is reached. See
Table: Service indicator codes for service levels.
Table 16
Service indicator codes
Service flash code Comments
ON 3s/OFF 1s Pump bearing service
ON 3s/OFF 3s Pump controller service
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