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MODEL MCH3 - MECHANICAL CONTROL HEAD (P/N 551200)
The Model MCH3 mechanical control head is a fully mechanical control head which can be connected to the PCL-300/460/600 cylinder valve. This control head will support a fusible link detection system, a remote mechanical pull station (Model RPS-M), and a mechanical or electric gas shutoff valve. A miniature electric switch (Model MS-SPDT, MS-DPDT, MS-3PDT, or MS-4PDT) can be ordered separately and field installed. It is equipped with a local manual control handle that allows for mechanical system actuation. Operation of the local manual control requires removing the pull pin and rotating the handle clockwise. The Model MCH3 control head can actuate a maximum of three (3) cylinders. See Figure 2-4.
MODEL ECH3 - ELECTRIC CONTROL HEAD
The Model ECH3 electric control head is an electrically operated control head which can be connected to the PCL-300/460/600 Cylinder Valve. This control head will support an electric thermal detection system, a remote mechanical pull station (Model RPS-M), and an electric gas shutoff valve. It will not support a fusible link detection system. A miniature electric switch (Model MS-DPDT) is included. The Model ECH3 control head is available in both 120 VAC (Model ECH3-120, P/n 551202) and 24 VDC (Model ECH3-24, P/N 551201). It is equipped with a local manual control handle that allows for mechanical system actuation. Operation of the local manual control requires removing the pull pin and rotating the handle clockwise. The Model ECH3 control head can actuate a maximum of three (3) cylinders. See Figure 2-5.
MODEL NMCH3 - MECHANICAL CONTROL HEAD (P/N 551203)
The Model NMCH3 Mechanical Control Head is a fully mechanical control head which can be connected to the PCL-300/460/600 cylinder valve. this control head will support a fusible link detection system, a remote mechanical pull station (Model RPS-M), and a mechanical or electrical gas shut-off valve. A miniature electrical switch (model MS-SPDT, MS-DPDT, MS-3PDT, or MS-4PDT) can be ordered separately and field installed. There is no local manual actuation for the Model NMCH. The Model NMCH3 control head can actuate a maximum of three (3) cylinders. The Model NMCH3 can be used as a direct replacement for the Model MCH3.
MODEL EN-MCU3 ENCLOSURE (P/N 551208)
The Model EN-MCU3 Enclosure is used for vertical mounting of a single PCL-300 or PCL-460. The EN-MCU3 also includes a mechanical control unit, eliminating the need for a Model MCH3 Control Head. See Figure 2-6. The PCL-600 cannot be mounted in an EN-MCU3.
MODEL EN-S ENCLOSURE (P/N 550966)
The Model EN-S Enclosure is used for vertical mounting of a single PCL-300 or PCL-460 when it is used as a secondary agent cylinder in a system. The EN-S has no control mechanism, and must be used in conjunction with a Model EN-MCU3 Enclosure or a Model MCH3/ECH3 Control Head. The PCL-600 cannot be mounted in an EN-S.
