Atlas Copco GA55 Instruction Book page 29

Instruction book
Period 2) Running
hours 2)
Daily
" —
" —
" —
" —
" —
— —
— —
3-monthly —
" 500
" 500
" —
" —
" —
Yearly —
" —
" —
" 2000
" 4000
" 4000
" 1000
" 500
" —
— —
2-yearly 8000
Notes
1. More frequently when operating in a dusty atmosphere. Replace damaged or heavily contaminated elements.
2. Use genuine Atlas Copco filters.
3. By unscrewing the cap one or two turns and retightening it or by pulling the valve lifting lever.
4. Recommended oil: Atlas Copco Roto-injectfluid. For the change interval in extreme conditions of temperature, humidity or
cooling air, consult Atlas Copco.
5. Or when the pressure drop over the separator exceeds 1 bar. See section 3.4.1 to call up this value. Check the pressure drop
when the compressor is running loaded and preferably with a stable working pressure.
6. One restrictor (Rf2-Fig. 1.6) is located in the oil scavenging line, the other (Rf1) upstream of oil stop valve (Vs).
7. Consult the User manual for Elektronikon regulator, section "Test submenu".
8. Consult the User Manual for the Elektronikon regulator before modifying the temperature protection settings, section "Modify
settings submenu".
2920 1381 02
See See notes
section below table
3.2 -
3.4/7.1 -
— -
3.4 -
3.4 -
3.3 -
3.6 -
5.3 3
5.2 -
5.1 1
— -
— 10
— 7
5.3 -
— 8
— -
— 6
4.6/5.1 -
4.3/4.4/4.6 4
4.3/4.4 -
4.3/4.4 -
— 9
4.1 -
— 5
Operation
Before starting
Check oil level (Gl)
During operation
Check readings on display
Check that condensate is discharged (Daa) during loading
Check oil level (Gl)
Check air filter service indicator (VI)
Regulate cooling water flow (water-cooled compressors)
After stopping
Drain condensate (Dma)
Operate safety valve (SV)
Check coolers (Co/Ca) and condenser of dryer; clean if necessary
Remove air filter element (AF). Clean by air jet and inspect
Remove, dismantle and clean float valve of condensate trap (MTa)
Check for possible leakages
Carry out a LED/display test
Have safety valve (SV) tested
Have the temperature shut-down function tested
Have the operation of the electrical interlockings, motor breakers, etc.
tested by an electrician
Check restrictors (Rf1, Rf2) for cleanness
Replace air filter element (AF)
If Atlas Copco Roto-injectfluid is used, change oil and oil filters
For GA 7.5-8-10 bar and 100-125-150 psi
If oil as specified in section 4.3.2 is used, change oil and oil filter
For GA 13 bar and 175 psi
If oil as specified in section 4.3.2 is used, change oil and oil filter
Have all flexibles/flexible joints inspected
Re-grease bearings of drive motor as specified
Have oil separator (OS) replaced
27