Installation & Service Manual

8Maintenance (continued)

￿WARNING

￿WARNING

￿WARNING

Follow the service and maintenance procedures given throughout this manual and in component literature shipped with the appliance. Failure to perform the service and maintenance could result in damage to the appliance or system. Failure to follow the directions in this manual and component literature could result in severe personal injury, death, or substantial property damage.

The appliance should be inspected annually only by a qualified service technician. In addition, the maintenance and care of the appliance designated in Table 8A and explained on the following pages must be performed to assure maximum appliance efficiency and reliability. Failure to service and maintain the appliance and system could result in equipment failure.

Electrical shock hazard – Turn off power to the appliance before any service operation on the appliance except as noted otherwise in this instruction manual. Failure to turn off electrical power could result in electrical shock, causing severe personal injury or death.

￿CAUTION

Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation.

Address reported problems

1.Inspect any problems reported by the owner and correct before proceeding.

Inspect appliance area

1.Verify that appliance area is free of any combustible materials, gasoline and other flammable vapors and liquids.

Inspect appliance interior

1.Remove the outer access panels and inspect the interior of the appliance.

2.Vacuum any sediment from inside the appliance and components. Remove any obstructions.

Check all piping for leaks

Listed below are items that must be checked to ensure safe reliable operation. Verify proper operation after servicing.

Flue vent system

1.Examine the venting system at least once a year. Check more often in the first year to determine inspection interval. Check all joints and pipe connections for tightness, corrosion or deterioration. Clean louvers and/or screens in the combustion air intake system as required. Have the entire system, including the venting system, periodically inspected by a qualified service agency.

Check water system

1.

Verify all system components are correctly installed and

 

operational.

2.

Check the cold fill pressure for the system. Verify it is

 

correct (must be a minimum of 12 PSI).

3.

Watch the system pressure as the boiler heats up (during

 

testing) to ensure pressure does not rise too high. Excessive

 

pressure rise indicates expansion tank sizing or

 

performance problem.

4.

Inspect automatic air vents and air separators. Remove air

 

vent caps and briefly press push valve to flush vent. Replace

￿WARNING

Eliminate all system or appliance leaks. Continual fresh makeup water will reduce appliance life. Minerals can build up in sections, reducing heat transfer, overheating heat exchanger, and causing heat exchanger failure. Leaking water may also cause severe property damage.

caps. Make sure vents do not leak. Replace any leaking

vents.

1.Inspect all water and gas piping and verify to be leak free.

2.Look for signs of leaking lines and correct any problems found.

3.Check gas line using the procedure found in Section 3 - Gas Connections.

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Lochinvar 90, 500 service manual Maintenance