311B, 312B, 315B, 320B, 322B, 325B and 330B Excavators Air Conditioning and Heating Caterpillar


Manifold Gauge Set (Refrigerant) - Remove

Usage:

322B L 1AS

------ WARNING! ------

接触制冷剂会使人受伤。

无论发动机是否运转,系统始终处于压力作用下。 不得对充入系统加热。

接触制冷剂会造成冻伤。 让手、脸避开,有助于防止受伤。

当制冷管路被打开时,即使压力计显示系统中已经没有制冷剂,也要始终戴着护目镜。

拆卸接头时,务必小心谨慎。 慢慢地拧松接头。 如果系统内仍有压力,应将其在通风良好的地方缓慢释放。

通过燃着的香烟吸入制冷剂会使人受伤或死亡。

通过燃着的香烟或其他抽烟方法吸入空调制冷剂气体,或者吸入空调制冷剂气体接触明火而形成的烟雾,都会造成对人体的伤害或死亡。

维修空调时,或者,在任何可能存在制冷剂气体的地方都不要抽烟。

进行空调和加热系统检查前,将机器移至水平路面上。 将所有机具降至地面。 确保变速箱处于空档或停车位置,并且停车制动器接合。 保持其他所有人员远离机器或能够看到他们的地方。





图 1g00470339

(1) 低压阀

(2) 高压阀

(3) 低压软管

(4) 高压软管

(5) 维修阀(低压侧)

(6) 加注软管

(8) 维修阀(高压侧)

(9) 歧管仪表组

(10) 制冷剂罐顶部阀门

(11) 制冷剂罐

(12) 蝶阀

(18) 台秤

必须正确拆卸仪表软管才能避免低加注。 只有仪表软管倾空所有制冷剂后才能获得正确的加注。 执行以下程序倾空软管。

  1. 关闭制冷剂罐顶部阀门 (10) 。

  1. 在压缩机运行中,关闭高压侧的维修阀 (2) 。 断开维修阀 (8) 上的系统高压软管 (4) 。 维修阀 (8) 位于连接冷凝器和压缩机的管路上。

  1. 打开低压阀 (1) 和高压阀 (2) 。 压缩机将通过低压侧软管 (3) 吸入软管中的制冷剂。 现在系统加注完成。

    注: 拆下歧管仪表组后,必须在维修阀上安装保护盖。

  1. 关闭低压阀 (1) 。 断开维修阀 (5) 上的系统低压软管 (3) 。

  1. 断开制冷剂罐 (10) 上的加注软管 (6) 。

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