① Refrigeration system

制冷劑：由管路視液鏡觀察有無泡沫現象，稍有一點氣泡或清澈無氣泡則表示冷媒充足，有泡沫表示冷媒不足，需補冷媒。

Refrigerant: whether there is a bubble phenomenon by a pipe optic liquid microscope, and a slight bubble or clear air without bubbles indicates that the refrigerant is abundant, and the foam indicates that the refrigerant is insufficient, and the refrigerant needs to be supplemented.

管路：隨時檢查各接頭處是否滲漏，接頭周圍無油污為正常，有油污表示有滲漏情況，需檢查修復。管路表面有損傷時需增加保護層防護。檢修管路時應防潮、防塵。拆卸部件及管路時，應及時將管頭或管道封住，以免灰塵和水分進入。

Pipeline: check whether there is leakage at each joint at any time. It is normal if there is no oil stain around the joint. If there is oil stain, it means there is leakage and it needs to be checked and repaired. When the pipeline surface is damaged, the protective layer should be added. The pipeline shall be protected from moisture and dust during maintenance. When disassembling components and pipelines, the pipe head or pipeline shall be sealed in time to avoid dust and moisture entering.

空調制冷效果不佳時，應檢查暖風水閥是否關閉。如檢查暖風兩根黑色軟管燙手，則應關閉暖風水閥后再使用空調。

When the cooling effect of the air conditioner is not good, check whether the heater water valve is closed. If the two black hoses of the heater are hot, close the heater valve before using the air conditioner.

②壓縮機

② Compressor

定期檢查驅動皮帶是否過松及張緊輪內軸承是否運行正常。

Regularly check whether the drive belt is too loose and whether the inner bearing of the tensioning pulley operates normally.

檢查皮帶須在發動機停止后方可進行，兩輪中間用兩指壓下7～10MM,稍有彈性者佳。皮帶磨損嚴重時需更換。

The belt should be checked only after the engine stops. Use two fingers between the two wheels to press down 7-10mm. It is better to have a little elasticity. The belt needs to be replaced in case of serious wear.

③ 冷凝器

③ Condenser

冷凝器芯子：表面不要有異物阻礙熱交換，表面有異物時要用水輕輕沖掉表面灰塵，注意不得使用高壓水或氣體進行清理。

Condenser core: there should be no foreign matter on the surface to hinder the heat exchange. When there are foreign matters on the surface, the surface dust should be gently washed away with water. Pay attention not to use high-pressure water or gas for cleaning.

風扇電機：檢查是否正常旋轉，風量有無變小。

Fan motor: check whether it rotates normally and whether the air volume decreases.

④ 蒸發器

④ Evaporator

蒸發器周圍環境：經常保持駕駛室清潔，勿堆積大量雜物，以免妨礙空氣循環。

Evaporator environment: always keep the cab clean, do not pile up a lot of debris, so as not to hinder the air circulation.

蒸發器芯子：表面及濾網是否有臟物，有則應立清除表面灰塵或雜物。

Evaporator core: whether there is dirt on the surface and filter screen, if so, dust or debris on the surface should be removed immediately.

風扇電機：檢查是否正常旋轉。

Fan motor: check whether it rotates normally.

⑤ 線束

⑤ Wiring harness

檢查線夾插頭有無松動，檢查有無與車體摩擦現象，有此類現象則應固定老靠并加絕緣保護。

Check whether the clamp plug is loose and whether there is friction between the clamp plug and the car body. If there is such a phenomenon, the clamp plug should be fixed and insulated.