BOCK 541E 설치 운영 및 유지보수 - 페이지 6

{카테고리_이름} BOCK 541E에 대한 설치 운영 및 유지보수을 온라인으로 검색하거나 PDF를 다운로드하세요. BOCK 541E 12 페이지. Oil-fired water heaters

페이지 인쇄

Regular maintenance

will keep the water

heater operating at

peak efficiency. The

tank can fail prema-

turely from the

accumulation of lime

and sediment in the

bottom, excessive

pressure and/or cor-

rosion.

MAGNESIUM

ANODE RODS

FREEZING

– 6 –

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 burn-

er 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 if 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 hole 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 or 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 ex-

cessive 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 be damaged or would block the flow of water to the drain. Stand away from the out-

let to avoid contact with the water.

Rods are installed in the head of the tank to help prevent corrosion of the tank. When inspecting the

tank interior for lime or sediment accumulations, also inspect the condition of the anode rods. When

either rod has eroded to about one third of its original diameter, it should be replaced.

Vent system should be checked at least once a year for damage and/or blockage.

prevent freezing and piping damage. Please see warning on hydrogen gas buildup on page 1. IMPOR-

If the water heater is to be shut off during cold weather, the tank and water lines should be drained to

TANT! The water heater warranty will be invalid if the tank fails due to excessive pressure, the accu-

mulation of lime or sediment, corrosion, or freezing. The Bock Water Heaters warranty (back page)

explicitly documents further causes of invalidation.