AwiDESULF combi-package for microbiological desulphurisation
75°C / copper wire only (75°C / copper).
8.6
Maintenance
The intake (suction) side of the compressor is fitted with a filter. The filter pads should be checked on
a regular basis and replaced when dirty. Dirty filter pads lead to a reduced air flow, whereby the motor
can be damaged. Only original filter pads must be used (available at Awite).
Testing and Change interval
AwiDESULF 100:
The filter should be checked every 3 months, it must be exchanged after 12 months.
Testing and Change interval
AwiDESULF 200:
The filter should be checked every 3 months, it must be exchanged after 12 months.
Testing and Change interval
AwiDESULF 300:
The intake filter has to be cleaned after 250 operating hours at the latest, and the filter cartridge must be
exchanged after 3,000 operating hours. You can clean the filter by tapping it with the hand.
Testing and Change interval
AwiDESULF 500:
The intake filter has to be cleaned after 250 operating hours at the latest, and the filter cartridge must be
exchanged after 3,000 operating hours. You can clean the filter by tapping it with the hand.
Testing and Change interval
AwiDESULF 1000:
The intake filter has to be cleaned after 250 operating hours at the latest, and the filter cartridge must be
exchanged after 3,000 operating hours. You can clean the filter by tapping it with the hand.
8.6.1
Check non-return valve and solenoid valve
Since the risk is strongly influenced by on-site conditions (microbial growth, pipe distances, room
ventilation and room volume, persons and installations at risk, plant size), the need for an inspection
must be determined by the operator.
8.6.2
Procedure for checking the non-return valve and solenoid valve
Gas leakage from the fermenter back via the injection pipe through the air intake opening is prevented
by a non-return valve and an additional solenoid valve which shuts off the path without current
(closed-circuit current principle). In case of defect/contamination/fouling of the non-return valve and
simultaneous defect/contamination of the electric valve or undetected failure of the compressor, gas
may flow back. The probability of ignition of the atmosphere inside the compressor is considered to be
low. Depending on the pressure in the fermenter, the length of the pipe and the ventilation conditions
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