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Manual de usuario Bock s, modelo 250

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Bock recommends 120°F temperature settings for residential applications for safety as well as energy efficiency. 1. Check the fuel supply, electrical wiring and fuses. Make sure the temperature control is set for heat. 2. If the motor runs but there is no flame, remove the electrode assembly, clean and readjust (see Figure 5). Check the electrode porcelain for cracks and replace if necessary. Check the transformer to see of it is producing a strong spark. (Use extreme caution – the transformer has a 10,000 volt output.) Check that the coupling between the motor and pump shaft is not slipping. Check the set screw on the blower wheel for tightness. Clean or replace the nozzle if necessary, always using the correct size and spray angle provided by the manufacturer. 3. Bleed the pump to make sure the oil is clear and free of air bubbles. If the oil is milky or frothy, check the line for air leaks at fittings. Check the oil filter gaskets and make sure the filter cartridge is clean. 4. If the burner motor does not run, check the motor thermal overload button (red) and reset. If the burner motor does not run after pushing the red button on the back of the motor, turn the motor off and check the motor shaft to see of it is tight. Check the pump shaft; if it is free and the motor will not run, replace the flame detector located in the burner housing. Turn on the current and reset the control (relay). If the motor still does not run, replace the control (relay). If motor hums and gets hot, replace the motor. 5. If the burner ignites and runs a short time (10 to 15 seconds) and goes out on safety, replace the flame detector. If the burner still runs only a short time, replace the control. 6. The smell of oil or combustion products may be caused by poor draft or lack of combustion air. Remove and clean the electrode assembly and check the draft in the connector directly above the heater. There should be at least .01 inches W.C. draft (pull) or greater. Lime and sediment: Such accumulations can be controlled to an extent by softening the water. The tank should be inspected every six months by draining the tank, removing the hand hold cover, and making a visual check of the tank interior. If lime (or sediment) has accumulated, it should be removed by use of a commercial lime dissolving chemical or by scraping loose the deposit and flushing it away through the hand hole drain. Excessive pressure is controlled by the T&P relief valve. Water expands when heated and the extra volume of water must have a place to go. If water cannot expand into the cold water line because of a check valve, pressure builds as the water heats. The pressure relief valve opens, and dumps the extra volume of water. If the relief valve is faulty or none has been installed, the tank can fail due to this excessive pressure. Open the relief valve at least once a year to make sure the seat is not stuck. Caution: Before opening the relief valve be certain that the discharge line directs the water away from anything that could damaged or would block the flow of water to the drain. Stand away from the outlet to avoid contact with the water. MAINTENANCE INSTRUCTIONS MAGNESIUM ANODE RODS IMPORTANT WARRANTY COVERAGE COMPANY RESPONSIBILITY OWNER RESPONSIBILITY EXCEPTIONS TOTAL WARRANTY COMMITMENT Regular maintenance will keep the water heater operating at peak efficiency. The tank can fail prematurely from an accumulation of lime and sediment on the bottom and tubes, excessive pressure and/or corrosion. Prevention will appreciably extend the life of the water heater. Lime and sediment accumulations can be controlled by softening the water. Inspect the tank every six months by draining, removing the hand hole cover and making a visual check of the interior. Remove lime or sediment with a commercial lime dissolving chemical or scrape loose the deposit and flush it away through the hand hole or drain. Excessive pressure is controlled by the pressure relief valve. Water expands when heated; if it cannot expand into the cold water line because of a check valve, the pressure relief valve opens and dumps the extra water. If the relief valve is faulty or none has been installed, the tank can fail due to this excessive pressure. Open the relief valve at least once a year to make sure the seat is not stuck. Caution: Before opening the relief valve, be certain the discharge line directs the water away from the outlet to avoid contact with the water. Magnesium anode rods are installed in the head of the tank to help prevent corrosion. When inspecting the tank interior for lime, also inspect the anode rods. When the original diameter of any of the anode rods has eroded to about one-third it should be replaced. Freezing: If the water heater is to be shut off during cold weather, the tank and water lines must be drained to prevent freezing, which will crack the tank. Open the relief valve test lever annually. The warranty will be invalid if the tank fails due to excessive ...