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9.1 MAINTENANCE PLAN
• After a few hours of service, it is important to re-tighten the belts, as it is during the first few hours when
adjustments between the pulleys and belts are required
WEEKLY TASKS
• Check the suction filter, clean it if the pressure loss exceeds 50 mbar.
• Check the oil level.
• Check the unit for vibrations and unusual noises.
AFTER 500 HOURS OF SERVICE, maximum of six months.
• Change the lubrication oil.
• Clean the suction filter.
• Check the level of the coupling, or the alignment of the pulleys and belt tension.
•Turn the blower by hand and check that it moves smoothly.
AFTER 1,000 HOURS OF SERVICE
• Clean the suction filter.
• Check the safety valve.
• Check the non-return valve.
• Check the belt tension.
AFTER 4,000 HOURS OF SERVICE
• Clean the suction filter.
•Take and check samples of the lubrication oil and change the oil if necessary.
• Check the level of the coupling, or the alignment of the pulleys and belt tension.
• Check the safety valve.
AFTER 8,000 HOURS OF SERVICE, maximum of 1 year.
• Clean or change the suction filter.
• Change the oil.
• Check the safety valve.
• Check the level of the coupling, and the condition of elastic parts (drag rubber) and change them occasionally.
Check the alignment of the pulleys and belt tension. Check the condition of the belts and change them
occasionally.
THE OIL MUST BE CHANGED ONCE A YEAR.
AFTER 20,000 HOURS OF SERVICE
• General inspection by an authorised specialist.
9.2 CLEANING
Rotary piston blowers operate without any contact between the pistons or between the pistons themselves
and the body and side covers, which allows these machines to work with fluids containing a limited amount
of sediment. The B.4 and B.5 type blowers (vertical fluid movement, from top to bottom), are moresuitable
than those with horizontal fluid movement.
Moreover, in vertical fluid movement, when the fluids transported are gases that may produce condensation or
fluid drag in a continuous and uniform manner (not sudden liquid flow), the compression chamber remains free
of fluid due to the action of gravity.
The diversity and different nature of the pumped or transported gases and gaseous mixtures is such that no
valid general instructions for cleaning can be provided.
For the blowers to operate smoothly and without friction, the pistons and the body must be completely free of
oil, dust or residue.
When operating in difficult conditions, dust, grease or sticky residue, etc. can accumulate, in the interior
of the compression chamber. In such cases, the interior of the blower must be washed using industrial
detergents or solvents, such as: petrol, tetralin, kerosene, etc., depending on the nature of the sediment.
Sticky or encrusted sediments, should be removed using a spatula or a suitable solvent or superheated steam.
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