Atlas Copco LE11, Instruction Book

Industrial Air Division

9

2920 5997 03

4 Maintenance

O-rings, washers.  Consult Atlas Copco for available maintenance
kits.

The "longer interval" checks must also include the "shorter
interval" checks.

4.1 Preventive maintenance schedule

The schedule contains a summary of the maintenance instructions.
Read the respective section before taking maintenance measures.

When servicing, replace all disengaged packings, e.g. gaskets,

Period 1)

Running

Operation

Consult

See

Preventive

hours 1)

section

note

main-
tenance
kit No.

Daily

------

Check oil level 

(not on LEN)

3.2

1

--

Weekly

------

Drain condensate from air receiver by opening drain cock (10-Figs. 1)

--

--

--

Monthly

------

Operate safety valve by turning its knurled cap or by lifting its central
plunger with a screwdriver

--

2

--

"

------

Check that regulating system operates properly

--

--

--

"

------

Inspect air filter.  Replace if necessary

5.3

4

2-Fig. 4

3-monthly

------

Clean unit.  Remove dirt from cooling fins by air jet

--

3

--

Yearly

------

Test safety valve

5.5

--

--

"

------

If provided, test relief valve

5.6

--

--

"

400

On LE/LT9/12,

 replace air filter

5.3

4

2-Fig. 4

"

500

On LE/LT7/8,

 replace air filter

5.3

4

2-Fig. 4

"

700

On LE/LT5/6,

 replace air filter

5.3

4

2-Fig. 4

"

1000

Change muffler element 

on LE/LT7 up to -12 and LEN

--

--

2-Fig. 4

"

1000

Check tension of transmission belt(s) (if equipped with)

--

5

--

"

2000

Change oil 

if mineral oil is used (not on LEN)

4.2

--

--

"

2000

Inspect for carbon deposits in air receiver; clean if necessary

--

--

--

2-yearly

3000

Change oil 

if Atlas Copco approved P.A.O. oil is used (not on LEN)

4.2

--

5-Fig. 4

-----

3000 to

Change check valve 

on LE/LT5/6

 or unloader

4000

on LE/LT7 up to -12 and LEN

5.1

--

3,4-Fig. 4

-----

4000

Change valves.  For possible earlier replacement consult section 5.2

5.2

--

1-Fig. 4

1) Whichever interval comes first

.  The local Sales Company may overrule the maintenance schedule, 

especially the service

intervals,

 depending upon the environmental and working conditions of the compressor.

Remark

For partial or complete overhaul, service kits, exchange compressors, etc. are available.  Consult Atlas Copco.

Notes

1. Maintain the level in the lower half of the sight-glass.
2. Always wear gloves.
3. Wear safety glasses.
4. For normal operation in clean surroundings.  More frequently when operating in dusty environment.
5. Correct adjustment is obtained when each V-belt can be pushed inwards 15 mm per m distance between the two pulley centres when

a force of 20 N is exerted midway.