Innovation - Edge [i] Installation, Operation, Maintenance Manual
CHAPTER 6
– MAINTENANCE
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9/6/2019
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Set-Up Instructions Instructions
Figure 6.8.3.1: Sample Heat Exchanger Cleaning Set-Up
5.
Install a hose to the upper drain valve and route it back to the top of the circulation bucket.
6.8.3.2
Cleaning Procedure
Cleaning Procedure Instructions
1.
Prepare a cleaning solution of Rydlyme Chemical Descaler and clean water according to
manufacturer’s instructions. The amount of the solution should be approximately equal to the
full volume of water that the heat exchanger holds.
2.
Slowly add the prescribe amount of the cleaning solution to the circulating bucket.
3.
Open the upper and lower drain valves, and then turn on the pump. Periodically check for
leaks and maintain the liquid level in the bucket. A lowering volume level is an indication that
there is an open drain in the system.
4.
Check the cleaning circuit to ensure that the cleaning solution is flowing from the circulation
bucket, through the pump and the unit and back to the top of the top of the bucket.
5.
Return discharge foaming indicates an active cleaning solution and the presence of mineral
deposits in the equipment.
6.
Additional cleaning solution and/or water may be required to maintain circulation and to
prevent the pump from cavitating.
7.
Circulate the cleaning solution through the heat exchanger and piping for 1 to 3 hours.
Estimate the circulation period based on the time in service and water hardness. When the
foaming action stops, cleaning solution strength is depleted (two pounds of deposits removed
per gallon used) or the equipment is free from calcium and other water-formed mineral
deposits.
8.
Periodically test the solution for effectiveness to determine if more cleaning solution is
needed. Refer to “
Testing Cleaning Effectiveness
” in the next section for details. If the
cleaning solution is expended before circulation time is up, additional cleaning solution will be
needed and circulation time may be extended to complete the cleaning.
HOSE
CONNECTION
UNION
BACK-FLOW
PREVENTER
CLOSE COLD
WATER INLET
COLD
WATER
IN
PUMP
CIRCULATION
BUCKET
CLOSE HOT
WATER OUTLET
LOWER DRAIN VALVE
UPPER DRAIN VALVE