15
TS Series
6.0 Troubleshooting (continued)
Problem Possible Causes Solution
Compressor knocking Loose compressor fan pulley Remove fan pulley and exam-
ine keyway and key for wear.
Change the key/pulley as re-
quired.
Worn out piston, cylinder, crank-
shaft and connecting rod bear-
ings.
Overhaul compressor unit. Re-
place the related components
Check valve faulty Replace check valve
Pressure built up time excessive Leaks in pressure lines. Repair leaks
Loose belts. Tighten or replace as required
Defective seating of inlet and ex-
haust valve plates
Clean and refit after careful
inspection
Worn out piston rings. Replace and check related
components
Unloader valve leaky. Dirty or faulty pressure switch Replace as needed
Pressure switch does not work Punctured diaphragm because of
frequent operations
Replace switch
Compressor package vibration Floor not level Check for level and correct
Foundation bolts and nuts loose. Tighten bolts and nuts.
Starter chattering. Loose connection in starter mains/
coil terminals
Tighten all the wires in starter.
Pressure switch malfunctioning. Replace pressure switch
Low supply voltage. Check supply voltage and cor-
rect
Contactor tip welding Foreign particles prevent contact
from closing
Replace contactor
Low supply voltage. Check voltage and correct
Short circuit. Trace and correct fault
Defective starter Replace starter
Starter tripping. Over load setting wrong Check motor FLA and set to
proper setting
Over loading. Pressure setting too high, ad-
just
Motor winding short. Replace motor
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