HWM-H-IOM (10/14)
Page 25
Mix 1 gallon of concentrated liquid ice machine cleaner per 15 gallons of water in a 55 gallon
drum as shown in Figure 13.
Connect th
e 3/4” ID x 15’ heavy duty hoses to the drain valves and run to the container holding
the cleaning solution.
Start the closed circuit cleaning by ensuring that the isolation valves are tightly shut and then
energize the HWM water circulating pump.
Circulate the cleaning solution through the HWM closed circuit for approximately an hour or until
there is no further change in the color of the cleaning solution.
When cleaning process is completed, turn off the water circulating pump and drain cleaning
solution into drum. Safely dispose of hose.
Flush the heat exchanger water system clear of cleaning solution. The flushed mixture is routed
into the 55 gallon drum. Approximately 20 gallons of water flushed through the system will ensure
cleaning solution has been thoroughly flushed out of the system and into the drum.
Safely dispose of hose. Close and seal drum and safely dispose of drum containing used
cleaning solution.
After closing the drain valves, open the isolation valves and purge the system of air.
Reconnect power to the HWM in the normal operational mode.
Establish a schedule for regular maintenance of the HWM heat exchanger, based on the results
of the first heat exchanger cleaning.
