mycom 3225**C Series User Manual

2202MYJE-MY-C8-N_2018.02.
Chapter 5 Maintenance and Inspection
Compound 2-stage Screw Compressor 3225**C 5.2 Maintenance and Inspection List
5-4
Table 5-1 Daily Inspection Item (continued)
Inspection item
Inspection details
Checkpoints and actions
Others
Motor current
A
Whether it is increased from the
time of the commissioning
 Compressor/motor failure
Oil level of the oil
separator
-
Oil level height
 Oil loss
 Replenish oil
Liquid level of the liquid
receiver
-
Liquid level height
 Replenish refrigerant
Refrigerant leak check
-
If any leak is found
 Inside the machine room and in the
facility on the load side
■ Unless otherwise specified, the pressure unit "MPa" represents the gauge pressure in this
manual.
■ Daily Maintenance Items
1. Oil level height of the lubricating oil
If the oil level of the oil separator has reached the lower limit, charge the lubricating oil.
2. Oil filer element replacement
When the differential pressure between the inlet and outlet ports of the oil filter exceeds 0.1 MPa,
replace the filter element. During the period of initial operation, the pressure difference between
the inlet and outlet ports of the oil filter can quickly become large
3. Cleaning of suction strainer
Inspect the suction strainer when the operating hours of the compressor from the initial operation
starting has exceeded 500 hours.
If the filter used is a temporary filter for initial operation, remove the filter.
Also, as it is common that the differential pressure across the suction strainer can become large
in a short period of time, inspect and clean the suction strainer if the differential pressure is large.
4. Amount of oil leak from the mechanical seal
If the amount of oil leak from the mechanical seal is considered excessive, check the amount of
oil leak per hour. The table below shows the guideline on the acceptable amount of oil leak and
the amount that requires inspection.
If any damage is found on the mechanical seal in the inspection, be sure to replace it.
Table 5-2 Criteria of the Leakage from the Mechanical Seal
3225**C
Acceptable leakage amount (mL/hr)
≤ 6
Inspection is required (mL/hr)
≥ 18
Note: The values in the above table are only for guidance
purposes, and no guarantee is provided.
5. Contamination on the cooling water side of the condenser and oil cooler cooling pipe.
The degree of contamination and clogging of the cooling pipe can significantly vary depending on
the quality of the cooling water. If any gradual increase in the oil temperature and/or the discharge
pressure is observed during the initial period of operation, check and clean the cooling water side
of the oil cooler and the condenser regardless of the inspection schedule.

mycom 3225**C Series Specifications

General

Brand	mycom
Model	3225**C Series
Category	Compressor
Language	English