Care And Maintenance - Craftsman CMXTEPA0018 Instruction Manual

pH Total Dissolved
Solid (TDS)
6.5 Up to
- 500
8.5 mg/L

11. Care and Maintenance

To ensure maximum performance of your water heater and to reduce the risk of a water leak, we recommend the following maintenance:
• The water heater has minimally required maintenance procedures. Periodic inspections and tests are always recommended for
signs of damage or failure. Any damage, cracks, leakage or weakness should be addressed and fixed immediately. Do not over
tighten any of the connections. Over tightening the connection points could cause severe internal damage to the unit.
• Remember that water heated at higher temperatures produces scale buildup much faster than at lower temperatures. Having
manual shut-off/maintenance valves installed on the inlet and outlet of the water heater will allow access to flush the unit with a
descaling solution. We recommend routine maintenance once a year or once every six months if the water supply has an unusually
high level of mineralization (hard water)
• Clean the pre-filter on the inlet water side once every six months. Wash lightly to remove any debris.
When any form of maintenance is carried out on the water heater or the home's plumbing system that may introduce air into the plumbing
pipes, it is crucial to power off the water heater and purge the air out of the lines before allowing the unit to power up.
FAILURE TO DO SO COULD RESULT IN PERMANENT DAMAGE TO THE HEATING ELEMENT AND VOID YOUR WARRANTY.
When air is introduced into the plumbing system, follow the steps below to ensure the unit can safely resume operation.
1. Shut off all power connections to the unit at the circuit breaker on the main electrical panel.
2. Perform the maintenance or servicing tasks.
3. Open one or more hot water faucets and allow water to run through the unit for several minutes to purge any air from the heater
and water lines.
This step must be performed before turning on power to the heater. Failure to complete this step may cause permanent
damage to the heating elements.
4. Reconnect power to the unit at the circuit breaker on the main electrical panel. Press and switch the ON position.
5. With the water running through the unit, check and reset the temperature if necessary. The recommended temperature setting is
118°F (48°C).
14
Chart for Recommended Water Quality levels
Free CO2 Total Aluminum
Hardness
Up to Up to 200 Up to
500 mg/L 0.2
mg/L mg/L
Chloride Copper Iron
Up to 250 Up to 1.0 Up to
mg/L mg/L 0.3
mg/L
Manganese Zinc
Up to Up to 5
0.05 mg/L
mg/L