Pressure Relief Valve; Changing V-Belts/Automatic Tensioning System - Gardner Denver L15 Original Operating Manual

10. Service and maintenance

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.
Fig. 20
1 Pressure relief valve
Testing the pressure relief valve
The valve should be tested on a separate compressed
air line in accordance with local legislation.
Operate the pressure relief valve (-1- Fig. 20 ; -8- Fig. 2)
depending on the type of valve:
by unscrewing the cap one or two turns and
•
retightening it
or by pulling the valve lifting lever
•
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!
10.9 Changing V-belts/automatic
tensioning system
DANGER
Only perform checks and carry out work
when the screw compressor unit is out of
operation and depressurized, electrically
isolated and locked off.
Any safety equipment which had to be
removed for the replacement of the V-belt
set must be remounted after completion of
this work.
NOTICE
The replacement of a single V-belt is not
permitted, always replace a complete V-belt
set.
During the entire service life of the V-belt set,
no readjustment of the automatic V-belt
tensioning system will be necessary.
Fig. 21
45