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


Manifold Gauge Set (Refrigerant) - Install

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 1g00470944

(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

(R) 回收站

  1. 将歧管仪表组 (9) 连接到制冷剂压缩机附近的维修阀上。 加注用维修阀位于制冷剂管路上。 将低压软管 (3) 连接到压缩机进气侧的维修阀 (5) 上。 将高压软管 (4) 连接到压缩机排气侧的维修阀 (8) 上。 确保逆时针转动带阀门的接头进行安装。

  1. 顺时针转动压力阀,并确保歧管仪表组上的两个压力阀均处于关闭状态。

  1. 利用干净的布盖好歧管仪表组上断开的加注软管接头。 这样可防止压缩机油的喷洒。 将歧管仪表组 (9) 上的低压阀 (1) 打开大约 1/2 圈。 使阀门保持打开 2 到 3 秒,以排出软管中的空气。 此方法还能排出仪表组中的空气。 关闭仪表组上的低压阀 (1) 。 对高压阀 (2) 重复此过程。

  1. 上紧歧管仪表组 (9) 上的加注软管接头。

注: 利用制冷剂识别器(分析仪)防止假冒 R-134a 制冷剂污染工具。

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