Are you using heat pump for hot water application and it is been shut for more than 2 to 3 months due to current pandemic situation. Let’s find out the precautionary steps to be taken before the restart of the heat pump.
We are going to talk about The precautionary steps to be taken before the start of the heat pump after very long time.
There are 12 precautionary steps to be followed and this can be for any heat pump/any model/any capacity, air or water sourced, any form of liquid used, direct or indirect integration.
As a first step we have to drain the water which is available in the system, the water quality of the stagnated water will be very poor and it can damage the system if you restart.
After draining, refill it with very fresh quality water and switch on the circulation system. Check for the air lock in the circulation system. if not checked it can cause damage to the coil and also it affects the flow of the system.
As a next step, Check for the strainer choke. This stagnant water might have cause the strainer to get choked. We have to clean the strainer because it will affect the flow of the system.
After the strainer, Check for the Plate Heat Exchanger. This also might have choked because of the stagnated water. Clean the plate heat exchanger. Proper cleaning of the plate heat exchanger will help the proper transfer of heat and the required output will be delivered
After following the first 5 steps, we have to drain the water again, this drain will helps to flush out all the dust particles sludge that are available in the system while we are cleaning the strainer and plate heat exchanger. Refill again with fresh quality water, can be demineralised water RO water. Also check for the level in the buffer tank which we are using in the system whether it is up to the required level for the heat pump system to work.
Then Check for the temperature sensor which is to be available in the buffer tank. The position of the sensor is very important and it has to be checked if it properly immersed in the buffer tank.
After that Check for the electrical supply because there may have voltage fluctuation, power factor fluctuation, fuses and breaks might have been damaged. All these need to be checked.
After following all these precautionary steps, Switch on the Heat pump system.
Check for the Leakages. There might be leakages here and there while we are doing some cleaning activities. Arrest those leakages. After that, Switch on again the Heat pump system.
At this pont of time, check for Heat pump display for any errors. Look for sensor readings such as electrical parameter readings with the help of energy meter and CT, flow sensor,and temperature sensor readings.
While following all these precautionary steps, Now we are safe with the Proper Restart of the Heat Pump.
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