24
Handling
Useful
Functions
Timer Operation
With the “ON” timer, the Oil Cooling Unit can be started after elapse of a desired time.
This mode can be used to warm up the main machine.
The operation start time setting range is 0 to 999 hours (in one hour steps).
∗ While the timer mode is selected, keep the main power supply ON.
The value indicated on the control panel will be decremented from a preset value at one-hour intervals.
∗ To cancel the timer mode, set the timer at “0”.
∗ The timer setting is active only once. To use the timer again, you must set up the timer again.
Operating procedure
• Go to the timer mode with the key.
See “Mode changing operation” on page .
• The “TIMER
SET” lamp on the operation mode indicator lights.
∗ “0” blinks on the data display.
1. Select the timer mode.
Change the value on the data display to a desired value with the
or key.
The unit of set value is “h” (hour).
2. Specify an operation start time.
• Press the key to register the timer setting.
• When the timer is activated, the Oil Cooling Unit is halted.
∗ The value on the data display blinks.
∗ The “TIMER” lamp (red LED) blinks.
Keep the main power supply ON.
3. Set up the timer.
With the built-in heater model (–H), the electric heater heats up oil to a preset temperature during main machine warm-up in
winter. Combining this function with timer operation enables more effective warm-up.
Heater ON: When inlet oil temperature is at least 0.5˚C lower than preset temperature
Heater OFF: When inlet oil temperature is equal to, or higher than preset temperature
Regardless of the operation mode, the Oil Cooling Unit turns ON/OFF the heater by detecting the inlet oil
temperature.
(∗ Only when the compressor is not in operation)
Note that the heater cannot perform high-precision oil temperature control.
Main machine warm-up
17
Data displayOperation mode
indicator
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PIM00318A_EN.fm Page 24 Tuesday, October 26, 2010 12:37 PM
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