Gardner Denver L23, Оригинальное руководство по эксплуатации и обслуживанию

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10 Service and Maintenance
47
1 Housing cover
2 Filter foam
3 Air filter
The air filter cartridge should be changed at least as
often as stated in Section 10.3. Check the air filter at
least once a week and possibly daily for dust
accumulation. When performing maintenance, take care
that no dirt makes its way to the clean air side of the air
filter.
Changing times for air filter cartridges
Operating conditions (e.g., coolant temperatures), the
type of operation and the quality of the intake air (e.g.,
dust content, ratio of gaseous foreign substances such
as SO
2
and solvent vapors, etc.) have a strong
influence on the filter lifespan (air filter, oil filter, fine
separator).
In these cases the intervals between changes may be
shorter
Replace the air filter as follows:
•
Switch off the screw compressor unit, secure it
against an accidental restart.
•
Pull the snap hooks outward and take off the
housing cover (- 1 - Fig. 25).
•
Carefully pull out the filter foam (- 2 - Fig. 25) and air
filter elements (- 3 - Fig. 25).
•
Carefully slide the new air filter cartridge into the
housing and insert the filter foam.
•
Close the air filter with the housing cover. The snap
hooks must latch.
10.8 Pressure relief valve
DANGER
When checking pressure relief valve there
is an explosive release of pressure.
Failure to perform this operation in a safe
manner or without safety equipment may
result in personal injury or death.
•
Use the appropriate safety equipment,
hearing and eye protection, and use
safety precautions when performing this
PRV check on an operating machine.
2
1
Fig. 26
1 Pressure relief valve
2 Valve cap
The pressure relief valve has no user serviceable or
repairable components.
Testing the pressure relief valve
The valve can be tested:
1 On a separate compressed air system or
2 When raising the system operating pressure to its
normal level.
Keep local legislation in mind when testing.
Pressure relief valve operation ( -1- Fig. 26) depends on
the valve type and can be carried out by:
•
Lightly turning the valve cap ( -2- Fig. 26)
(1-2 turns), and subsequently closing it again.
•
Operating the lifting lever/pull ring.
If the pressure relief valve doesn't close itself or is leaky,
close the doors of the compressor and push the Stop
Button. After the pressure in the pressure vessel is
reduced to ambient pressure, renew the pressure relief
valve.
DANGER
A defective pressure relief valve may result
in pressure that is too high, breaking open
parts of the system and causing serious or
fatal injury.
•
A screw compressor may not be
operated with faulty pressure relief
valves!