Atlas Copco ZR 110, Instruction Book

Page: 296 / 328

Control panel of Elektronikon GraphicPlus controller
Faults and remedies
Condition Fault Remedy
Compressor starts running,
but does not load after a delay
time
Pressure in air net is above
pre-set loading pressure Compressor will load when pressure in air
net drops to pre-set loading pressure
Loading solenoid valve
inoperative
Check and replace the valve as necessary
Full-load/no-load valve
malfunctioning
Have the valve inspected
Compressor capacity or
working pressure lower than
normal
Air consumption exceeds
capacity of compressor
Check pneumatic plant
Leaking connections and
damaged/leaking parts
Check for leaks. Tighten leaking
connections and replace damaged/leaking
parts.
Oil pressure too low Oil level too low
Top up level as described in section Before
starting.
Oil filters clogged Replace filters
Air temperature above normal
Inlet temperature too high due
to bad room ventilation or
recirculation of cooling air
Improve ventilation in compressor room
and prevent recirculation of cooling air
On ZR compressors,
insufficient cooling water flow Check water temperature and increase
cooling water flow
On ZR compressors,
restriction in cooling water
system due to formation of
scale or dirt deposits
Consult the Atlas Copco Customer Center
On ZT compressors, coolers
clogged
Refer to the Coolers section.
Instruction book
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