Monthly Checks - Graf oneAdvanced Operation Manual

7.2.2

Monthly checks

These monthly inspections must be documented.
Visually check for any sludge leaks, clouding, or discoloration in the discharge
Visual check for clogged supply and discharge routes
Read operating hours counter for air compressor (total operating hours), aeration (valve 2),
sludge return (valve 4), and if necessary any other units (when fitted), and note in operating
log.
Check the control cabinet's air filter
Check and, if necessary, clean or replace the filter for venting the control cabinet (ven-
tilation grille on left and right in housing wall of internal cabinet or on rear of external
cabinet).
To clean or replace the grille, first remove it by hand from the cabinet's outside. The fil-
ter mat is not secured in the ventilation shaft and can be shaken and/or blown out. The
time at which the air compressor filter is to be cleaned or replaced depends on the ex-
tent of contamination caused by the atmospheric conditions of the application. Follow
the service documents provided by the compressor manufacturer to check or replace
the filter on the compressor.
Figure 11: Opening the ventilation grille 15 x
15 cm
Check the UV module (if fitted).
See the operating instructions for the UV module
Check the P module (if fitted).
Check that the dosing pump is operating properly.
Check the level in the precipitant container.
Check the Infiltration (if fitted).
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Figure 12: Opening the ventilation grille 32 x
32 cm