Chandler Engineering Ametek Quizix 5000 Series, Руководство пользователя

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Chapter 5
SAFETY FEATURES
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5000 Dual Controller Driver and convert these signals to air pulses that open and close the fluid path in
the air–actuated, constant volume valves.
The pilot solenoids are connected to the CMD-5000 with a cable called the Transducer and Valve Cable.
This cable branches out at the solenoid end, providing one branch with a 2–pin connector for each
solenoid. The small cable branches and solenoids are numbered so that they can be connected in the
proper order, such as cable 1 into solenoid 1, etc. When moving or re-configuring the pump system,
this cable should be disconnected at the pump controller end, not the pilot solenoid end.
8.3 Air Supply
The valves used by the pump system are air–actuated. Air is taken into the system at the pilot solenoid
manifold, then air lines connect the pilot solenoids and the valve (Refer to Figure 8-2). Air is exhausted
from the system through two outlets labeled EA and EB in the manifold.
The air inlet valve at the bottom of the manifold, labeled P, contains a 1/4–inch quick– disconnect
fitting. You should insert a section of 1/4 inch tubing into this fitting to connect the system with a
pressurized air source that is regulated at 85–115 psi. A standard laboratory air supply with an air
compressor may be used. The air should be clean, dry, and oil–water-free.
The manifold supplies air to all of the pilot solenoids. Each solenoid actuates one fill or deliver valve
through two air lines. Each CV valve has a fill valve and a deliver valve and thus requires a total of four
air lines. The nylon tubing used as air lines to connect the pilot solenoids to the valves has a 1/8” outer
diameter and is color–coded (See Figure 8-2).
The amount of air used by the system to switch a valve is extremely small. However, because the pilot
solenoids use a small quantity of air every time the valves are switched, operation from a gas bottle is
not feasible because the bottle would be emptied too quickly.