Cleaning The Compressor Element - Atlas Copco SF 15+ Instruction Book

Procedure
1. Loosen motor hold-down bolts (3).
2. Loosen the belt tension by screwing bolts (4) equally and take off the belts (1).
3. Install new belts.
4. Tension the belts by screwing bolts (4) equally.
The tension is correct if the deflection is between 5 mm and 7 mm when exerting a force of
25 N on the belt midway between the pulleys. Make sure that the pulleys remain aligned.
The maximum out-of-line is:
• Maximum parallel out-of-line: 0.5 mm
• Maximum angular out-of-line: 0.5 degrees
5. Tighten bolts (3).
6. Check the belt tension after the first 500 running hours.
7.6

Cleaning the compressor element

The purpose of cleaning the cooling channels of a scroll element is to prevent the cooling
channels to silt up and as such reduce the cooling efficiency. A reduced cooling efficiency can
lead towards a premature compressor element failure.
Procedure:
1. Stop the compressor and switch off the power.
2. Close the air outlet valve and depressurise the compressor.
3. Remove the fan duct:
• Unscrew the 3 bolts (1).
• Remove clip (2) (if applicable).
90
• Compressor element cooling channels can be hot when the compressor has just
been turned off.
• Do not clean the cooling channels with organic solvent since this will damage the
surface treatment.
Instruction book
2920 7140 52