Maintenance Equipment - Mitsubishi Electric Y Series Manual

246
M
aintenance Equipment
Maintenance cycle
[Note that maintenance cycle does not mean guarantee period.]
The following tables are applicable when using equipment under the conditions below.
Normal use without frequent START/STOPs (The number of START/STOPs is assumed to be less than 6 times
per hour in normal use.)
Operating hours are assumed to be 10 hours per day/2500 hours per year.
When the equipment is used under the following conditions, the "maintenance cycle" and "replacement intervals"
may be shortened.
When equipment is used in an environment where the temperature and humidity are high or change dramatically
When equipment is used in an environment where power supply fluctuations (the distortion of voltage,
frequency, and waveform) are large (Only within the allowable range)
When equipment is used in an environment where the unit may receive vibration or mechanical shock
When equipment is used in an environment where dust, salt, toxic gases such as sulfur dioxide and hydrogen
sulfide, and oil mist are present
When equipment starts/stops frequently and operates for long periods (24-hour air-conditioning operation)
Table 1. Maintenance cycle
Major components
Compressor
Motor
(Fan, louver, drain pump)
Bearings
Electric board
Heat exchanger
Note 1 This table shows major components. Refer to the maintenance contract for details.
Note 2 This maintenance cycle shows a period in which products are expected to require no maintenance. Use this cycle for planning maintenance (budgeting the
maintenance expense etc.) The Checking/ Maintenance cycle may be shorter than the one shown on this table depending on the contents of the
maintenance check contract.
Sudden unpredictable accidents may occur even if check-ups are performed.
Replacement cycle for consumable components
[Note that replacement cycle does not mean guarantee period.]
Table 2. Replacement cycle
Major components
Long-life filter
High-performance filter
Fan belt
Smoothing capacitor
Fuse
Crank case heater
Checking cycle Maintenance cycle
20,000 hours
20,000 hours
1 year
15,000 hours
25,000 hours
5 years
Checking cycle Replacement cycle
5 years
1 year
5,000 hours
1 year
10 years
10 years
8 years
Major components Checking cycle
Expansion valve
Valve
(solenoid valve, four-way valve)
1 year
Sensor
(thermistor, pressure sensor)
Drain pan
Note 1 This table shows major components. Refer to the maintenance contract
for details.
Note 2 This replacement cycle shows a period in which products are expected to
require no replacement. Use this cycle for planning maintenance
(budgeting expenses for replacing equipment, etc.)
Maintenance cycle
20,000 hours
20,000 hours
5 years
8 years