Service Check List - Gardner Denver L15 Original Operating Manual

10. Service and maintenance

10.3.1 Service Check List

Every 8 hours operation
1. Check air/oil reservoir oil level, add oil if required.
See Section 7.5 for information. If oil consumption is
high, refer to Section 10.4, Excessive Oil
Consumption. DO NOT MIX LUBRICANTS.
2. Check operation of the machine, is it loading and
unloading properly.
3. Check discharge pressure and temperature.
4. Check control panel for advisory text messages.
Every 125 hours operation
1. Check for dirt accumulation on oil/aftercooler core
faces and the cooling fan. If cleaning is required,
clean the exterior fin surfaces of the cores by
blowing compressed air carrying a nonflammable
safety solvent, that will not damage aluminum in a
direction opposite that of the cooling air flow. The
cleaning operation will keep the exterior cooling
surfaces clean and ensure effective heat
dissipation.
Every 2000 hours operation or 6 months
2. Replace the oil filter element, as indicated by the
GD Pilot, every 1000 hours or every 3 months,
whichever occurs first. See "Change oil filter
cartridge", Section 10.5.
3. Replace air filter element, operating conditions
determine the frequency of service. The air filter will
need to be changed, as indicated by the GD Pilot,
every 2000 hours or every 6 months, whichever
occurs first. See "Change Air Filter", Section 10.7.
4. An oil sample will need to be taken and sent to the
GD oil lab.
5. Replace cool air inlet filter pad. See Section 10.13.
6. Clean or replace the control box filter (if app.), as
indicated by the GD Pilot, every 1000 hours or every
3 months, whichever occurs first. See "Clean/
replace cool air intake and control box filter pads",
Section 10.13.
Every 4000 hours operation or 12 months
1. Visually check for leakage on the shaft seal, replace
as required. See the parts lists for the kit part
number and for the tool kit part number. The tool kit
is required to change the oil seal. If the oil seal is a
lip seal, the wear sleeve must always be replaced.
2. Replace lubricant every 8000 hours **.
Under adverse conditions, change more frequently
(refer to "Oil Change Interval", in Section 10.4).
Flush system if required.
3. Replace Air/Oil Separator, operating conditions
determine the frequency of service. The air/oil
separator will need to be changed as indicated by
the GD Pilot, every 4000 hours or every year,
whichever occurs first. See "Changing the fine oil
separator" in Section 10.6 for further details.
4. Inspect the scavenge line, replace the check valve,
clean the scavenge line if necessary.
5. Inspect the inlet valve, service if necessary, see
parts list for repair kit part number.
6. Inspect the drive belts, replace if necessary. See
Section 10.9.
7. Inspect minimum pressure/check valve operation,
repair if necessary. See Fig. 2a "Minimum
Discharge Pressure/Check Valve".
8. Check pressure relief valve, see Section 10.8.
9. Inspect the condensate drain, repair if necessary.
** Check Section 10.15 for specific lubricant basic life,
based on actual lubricant in the package.
Every 8000 hours operation or 24 months
1. Inspect solenoid valves /vacuum switch operation,
replace if necessary.
2. Inspect blow-down valve operation, replace if
necessary.
3. Inspect thermistor probes operation, replace if
necessary.
4. Inspect pressure transducer, replace if necessary.
5. Inspect control valves and pressure regulator,
replace if necessary.
6. Inspect thermal mixing valve operation, replace
element if necessary. See Fig. 2a "Thermal Mixing
Valve" and "Compressor Oil System Check".
7. Inspect hoses, replace if necessary.
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