161
●Miscellaneous Reference Data
10
Miscellaneous Reference Data
Miscellaneous
Reference Data
Maintenance and Inspection
５
5-1. Daily Maintenance and Inspection
・ Oil pollution causes a fault or shortened service life of the pump. The oil pollution level must not exceed NAS class
10.
・ Keep a normal oil level in the oil tank (Between the yellow line and red line of the oil level gauge). Make sure that
the oil does not contain air bubbles.
・ Clean inside of the oil tank periodically.
・ Make sure that the main machine oil piping is not blocked (fully closed).
・ Make sure that the oil piping has no oil leak.
・ Make sure that the power supply voltage is within the range specified in the specifications.
・ Make sure that the compressor, fan and oil pump do not abnormally sound during operation.
・ Make sure that the OILCON does not abnormally shake during operation.
・ Check whether the sheath of the OILCON power lead is not broken.
5-2. Periodic Maintenance and Inspection
Suction strainer
・ Clean the suction strainer every six months to prevent the pump flow rate from being reduced due to blockages
built-up, and to prevent abnormal sound caused by cavitation.
Air filter
NOTE: Wear gloves when working as the fins of the condenser may cause injury while replacing the air filter.
・ Be sure to wash the air filter with water at 40℃ or lower temperature every two weeks.
If the air filter is clogged with dust, the intake air volume reduces, resulting in capacity deterioration. Also,
the compressor’s protection device is activated, hindering smooth operation. Furthermore, it causes power
consumption increase.
・ Operating the unit without the air filter causes a fault.
・ To remove the air filter, first remove the room thermistor, then lift the air fiter up and pull it forward and out.
If the air filter is clogged, the cooling capacity deteriorates, resulting in excess power consumption. Clean the air
filter periodically to improve efficiency.
Condenser
・ Check whether there are any substances in the condenser by removing the air filter (You do not need to remove
the external plate).
・If the condenser becomes extremely dirty, clean it with a brush, air blower, etc.
・ However, do not use water or cleaning agents for cleaning. The fan motor or pump motor may cause a ground
leakage.
Exterior
・Wipe the exterior surface with a dry cloth.
Never splash water over it.
・ To clean the exterior, do not use a brush, polish powder, acid, solvent (benzine etc.) or hot water. Using such
substances causes the paint to peel off.
Evaporator
・ Perform inspect the evaporator regularly as the piping becomes blocked (fully closed) because the internal gaps
are clogged with dirt. The inside of the evaporator cannot be checked as it is sealed. Check the oil flow rate at the
customer’s oil piping from the OILCON output (You do not need to remove the external plate).
Heater
・ The dust clogging in the heater causes the same status as heating without water. Carry out the inspection
periodically.
Oil drain (drain pan)
・ Inspect the bottom of OILCON (drain pan) every six months and if oil has accumulated, discharge it from the oil
drain port. The tightening torque of the hexagonal bolt for the drain is 2N·m.
If it is tightened with excessive torque, the bottom frame may be damaged.
Sealing material of the switch box cover
・ If the sealing material of the switch box cover is seriously damaged, consult Nearby Service Network. If you use
the product without an addressing the damage, the protection structure of IP54 cannot be maintained and the
electric component may break down.
00_PB00540A_M10.indb 161 2023/08/09 12:59:28
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