Mitsubishi Air Conditioner PQRY-P288ZSLMU-A1

Warning: This check requires trained personnel with PPE!

Does the water quality meet the specified quality?

Is the water flow rate adequate?

Enter the inlet temperature reading

Enter the outlet temperature reading

Is there a pipe connection port on the water inlet pipe?

Select the acid used for cleaning

Are valves installed before the inlet connection port and after the outlet connection port?

Enter the temperature of the cleaning solution

Enter the duration of cleaning in hours

Is the color of the cleaning solution indicating completion of cleaning?

Select the neutralizing agent used

Enter the duration of neutralization in minutes

Is the cleaning solution neutralized?

Plate heat exchangers cannot be disassembled for cleaning and have no replaceable parts. Watch the water quality to prevent corrosion and scale formation.

The quality of the water to be used for plate heat exchangers must meet the water quality guidelines JRA GL-02-1994 specified by Japan Refrigeration and Air conditioning Industry Association (JRAIA). (Refer to 3) Water treatment and water quality control.)

Controlling the circulation water flow rate

Insufficient water rate will cause freeze damage to plate heat exchangers. Check for insufficient water flow caused by clogged strainer, trapped air in the system, or malfunction of the circulation water pump.

Flow rate can also be checked by measuring the temperature or pressure difference between the inlet and outlet of plate heat exchangers.

If the temperature or pressure difference goes outside of the specified range, stop the operation, remove the cause of the problem, and resume operation.

What to do when the freeze protection trips

If the freeze protection trips during operation, be sure to remove its cause before resuming operation.