Table of Contents
What is the purpose of a chiller flow switch?
The flow switch detects whether there is any flow in the piping and opens or closes an electrical contact. It is normally used in heating, air-conditioning, refrigeration, water treatment, additive pumping and process systems in general.
How does a chiller flow switch work?
A flow switch operates by conveying a trip motion (relay, reed switch, paddle) to another machine within the system, usually a pump. The trip signal will indicate to the pump to turn on or turn off. It is necessary to provide damage protection and circuit cooling or adjust flow rates that are too high or too low.
What are flow switches used for?
A flow switch, sometimes referred to as a flow sensor or flow indicator, is a device used to monitor the flow rate and pressure of liquids, air or other gaseous media through a duct, system or loop.
Where do you put the flow switch on a chiller?
a. Recommended installation is one flow switch per module. The switch must be located downstream of any shutoff valve.
How do you test a flow switch?
How to Test a Flow Switch
- Put cover on the flow switch and turn power on. Video of the Day.
- Start flow through the designated system.
- Observe flow in operation to determine if flow switch is working properly.
- Repeat this process many times to ensure flow switch and designated system is in fact working accurately. Tip.
How does a flow control switch work?
A flow switch is a mechanical instrument that is used to control the flow of air, steam or liquid. Flow switches work by sending trip signals to another device (a pump for example) within the system, telling it to shut off or to turn on, which will further protect it from damage and for cooling circuit protection.
What does Hayward flow switch do?
The flow switch is a safety device that ensures that water is flowing through the cell before the salt system will generate chlorine. The flow switch should be located in a PVC T and the arrow needs to be pointed the same direction as the water flow.
How are flow switches used in alarm systems?
Paddle type Flow Switches Any medium passing through the duct with sufficient (or insufficient) force to move the flow switch paddle to a second position will complete a circuit, and trigger an action or alarm response.
Where do you put a flow switch?
The flow switch should be located in a horizontal section of pipe where there is a straight horizontal run of at least 5 pipe diameters on each side of the flo w switch. The flow switch may be installed in a vertical pipe if the flow is in the upward direction.
Where is the flow switch located?
The flow switch is located behind the outside walls of the spa and connected to the plastic piping.
Why is the flow switch on my chiller not working?
According to the operator, the display indicates a no flow condition, even with the chilled water pumps running. Sometimes a little bump to the flow switch casing is what is needed to get the chiller running. A previous engineer hinted a piping system air lock situation.
What is the function of a flow switch?
Flow switches are mechanical devices used in controlling the flow of air, steam, or liquid. A flow switch operates by conveying a trip motion (relay, reed switch, paddle) to another machine within the system, usually a pump. The trip signal will indicate to the pump to turn on or turn off.
How are flow switches used in water sprinkler systems?
Water flow switches are implemented in water sprinkler systems. In the case of a fire, for example, a flow switch can trigger an electrical fire alarm device to turn on. Airflow switches are used to cleanroom filter systems, exhaust ventilation, and air treatment systems.
How does a magnetic water flow switch work?
This information is read by an electrical sensor, which in turn triggers an action based on the reading. For a magnetic water flow switch to function properly, the liquid passing through it must be at least somewhat conductive. They’re often found in wastewater systems.