FILLING AND WATER TREATMENT : HOW TO CLEAN A GARN UNIT (SAVING THE TREATED WATER)
3. Obtain a pool leaf skimming net. A net and telescoping pole can be purchased from a local retailer ($9): Pool Leaf Net 4. Remove large chunks of debris with the pool net. 5. Use the suction wand and start pumping, siphoning, or vacuuming the sludge/debris off the bottom of the tank and into either the bypass filter, holding tank, or onto the ground (depending on the chosen setup). 6. When cleaning is complete, top off the unit with additional fill water. Be careful not to remove too much water. Keep in mind the water in the GARN is chemically treated, and fill water is not. So adding more fill water dilutes the chemical in the GARN water. 7. Take a water sample and send it in for testing to ensure chemistry is at the proper level.
Vacuuming Method :
The vacuuming method can be accomplished in a couple of ways depending on the amount of sludge in the tank and how reachable it is from the manway. For the vacuum method, attention is focused on removing the sludge and debris, NOT the clean water. A suction wand or vacuum hose is required to reach the bottom of the tank and areas where debris is located. A suction wand can be made with a section of PVC pipe hooked to a flexible hose (such as a vacuum cleaner hose or pool vacuum hose). This method can be effective, depending on where the debris is located in the tank. • If only minimal to moderate deposits are noticed, the bypass filter and pump arrangement shown in the GARN Owner’s Manual can be plumbed to create an effective pool vacuum. The filter and pump can then be used to remove the deposits. • If large deposits are noticed, use a shop vacuum and suck the deposits out as best as possible. Siphoning can also be tried but may be less effective. Heavy deposits and sludge through the filter as it will clog the filter too. A kid’s swimming pool can be purchased to make a temporary holding tank if desired. The dirty water can be transfered into the pool during the cleaning process. The dirty water can then settle out in the pool and the clean water that remains can be put back in the unit. A 260-gallon pool is relatively inexpensive from large retailers. See this link: Kid’s Swimming Pool 1. Before beginning this cleaning process, turn off system pumps, and allow the tank’s water to settle and cool. 2. Create a suction wand that can reach the areas of the GARN unit in need of cleaning.
Drain Clean and Refill Method:
This method requires the purchase of new chemical. Only follow this method if the debris in the tank is not a result of the fill water. If the debris and sludge is a result of impurities in the fill water, then the problem will likely return after refilling and retreating. In such cases, follow one of the other two methods, otherwise, proceed as follows: 1. Purchase new chemicals for your size unit. 2. Drain the unit. 3. Wash down the inside of the unit with a hose or pressure washer. 4. Use a wet/dry vac to remove sludge on the bottom of the tank that can’t easily be drained out. Empty the contents on the ground. The boiler chemicals are biodegradable and will not harm lawns or vegetation. 5. After the tank is adequately cleaned, follow the chemical treatment and filling instructions in the GARN Owner’s Manual.
GARN WHS 1000 and WHS 2000 Manual © HY-C Company LLC - September 2024
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