![background image](http://html1.mh-extra.com/html/gardner-denver/l07/l07_original-operating-and-service-manual_3758043042.webp)
9. Service and maintenance
40
9.3.1 Service Check List
Every 8 hours operation
1. Check air/oil reservoir oil level, add oil if required.
See Section 4 for information. If oil consumption is
high, refer to Section 10, 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
1. Replace the oil filter element, as indicated by the GD
Pilot, every 1000 hours or every 3 months, whichever
occurs first. See "Oil Filter", Section 5.
2. 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 "Air Filter", Section 7.
3. An oil sample will need to be taken and sent to the
GD oil lab.
4. Replace cool air inlet filter pad (if app.)
5. 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 "Ventilation Filters
(Electrical Enclosure", Section 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 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 "Compressor Oil Separator" in Section
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 motor bearings, re-grease if necessary,
see Section 2.
7. Inspect the drive belts (if app.), replace if necessary
. See section 9.
8. Inspect minimum pressure/check valve operation,
repair if necessary. See Section 12 "Minimum
Discharge Pressure/Check Valve".
9. Check pressure relief valve, see Section 8
10. Inspect the condensate drain, repair if necessary.
** - Check section 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 Section 12 "Thermal Mixing
Valve" and "Compressor Oil System Check".
7. Inspect, replace if necessary the drive coupling
spider (coupling element). See Section 12 for detailed
instructions on replacing the drive coupling spider.
8. Inspect hoses, replace if necessary.
Summary of Contents for L07
Page 2: ......
Page 43: ...9 Service and maintenance 41...
Page 57: ...55...
Page 58: ......
Page 59: ......