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4. Test running and adjustment
4.1 Before start up
Before setting system into working, the following
check list must be examined very carefully:
Check fan support(s) is/are fastened firmly. All the
screws are fixed.
There is no loose part before
running.
Check the level of condenser is correct.
Check all the electric wirings are correctly connected
and fastened tightly.
Check the power source is correct. And the fan is in
right rotation direction.
Check the refrigerant piping is connected and all
valves are in their positions.
suitable refrigerant quantity.
4.2 Check and adjust while running
In order to keep system in steady running, must adjust
well in test running, the following check list must be
examined and adjusted with patience.
* Check for fans rotating direction, make sure all the
fans run in correction direction. Check the current if
it is correct.
* Check if there is any short circuit in air side.
* Check oil level, if too low add adequate oil to standard
oil level. If system is equipped with high pressure
side oil separator, there is no oil return at high
temperature but oil returns at low temperature. Do
check the capacity of oil separator if it is too small.
* Check if condensing temperature is at the design point.
Be sure to consider the outdoor air temperature while
checking condensing temperature.
* Check sight glass of liquid line. The liquid must be
full at the rating operation.
Caution！
Keep hands away from fan
blades!
unpredictable!
System is filled up
Fan might operate
4. 試車與調整
4.1 啟動前檢查
在啟動系統之前，請仔細確認以下相關事項：
確認風車支架是否被牢固鎖定，所有的螺絲已被
旋緊。運轉前確認無其他鬆動零件。
檢查冷凝器的水平是否正確。.
檢查所有電線是否正確連接且已鎖緊。
檢查供電電源是否正常，確認風扇轉向正確。
確認冷媒管路已連接妥當，所有的閥都在正確的
位置。系統已充填適當的冷媒量。
4.2 運轉時的檢查與調整
為確保系統能穩定運轉，試車時必須要仔細調校，
以下的檢查項目在試車過程中必須要耐心觀察與調
整。
*檢查風扇運轉方向，確保所有的風扇向正確。檢查運
轉電流。
*檢查空氣是否有短循環。
*檢查油位，如果油位過低加入適量的冷凍油至標準
油位。如果系統裝有高壓側油分離器，在高溫段不回
油低溫段才回油的情形，請檢查油分離器的能力是
否過小。
*檢查冷凝溫度是否在設計點。檢查冷凝溫度時請同
時考慮當時的外氣溫度。
*檢查液管的視窗，在額定運轉時視窗必須呈現滿溢
情形。
注意！
將手遠離扇葉避免受傷! 風扇
可能無預期運轉！
5
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