6.14
Maintenance
Problem Cause Solution (go sequentially)
High discharge
oil temperature
Oil level is low
(1) Check and refill oil to correct the level. (in stopped
condition)
(2) Refer diagnosis procedure for high oil carry over.
(3) Arrest oil leaks
(4) Ensure the correct grade of oil is used.
Room temperature is higher than
outside ambient temperature by
30°C (86°F)
Improve ventilation in compressor room
Oil cooler clogged externally
Clean the cooler assembly / cooler pre filter mesh (if
available) externally by first using a fibre brush and then
blowing compressed air at 2.5 bar.g(36.3 psi.g).
For sticky dust, remove the cooler, close all the cooler ports
with dummy plugs and do a water-wash with soap oil.
Install the cooler prefilter mesh.
Cooling fan rotating in wrong
direction.
Check and correct the wiring connection to the cooling fan.
Replace with correct fan type.
Check fan motor fuse
Replace the fuse if blown.
Replace with the 2A fuse.
Cooling fan not working. Check and ensure the neutral connection is connected.
Temperature sensor malfunction
Replace the sensor.
Tighten/recrimp the connection with adaptor.
Oil filter clogged
Replace oil filter.
If required replace the oil (based on the condition of oil) and
run the compressor.
Thermal valve malfunctioning Replace the thermal valve element.
Oil injection orifice chocked or
improper size
Clean the oil injection orifice.
Replace with correct size.
Air filter clogged Clean or replace the air filter
Separator element clogged
Check pressure drop is less than 1bar (14.5 psi).
Replace oil.
Replace separator element.
Poor quality of oil Replace oil.
Oil cooler clogged internally
Check for pressure drop across the oil cooler if less than 1.5
bar (22 psi).
Check and clean the cooler internally with 20L of isopropyl
alcohol + toluene mixture in the 1:1 ratio and circulate for 4
hours with external 1 HP pump.
Refit the cleaned cooler and, if required, replace oil (based on
condition of the oil) and run the compressor.
To Next Page
Loading...
