OPERATION, MAINTENANCE AND TROUBLESHOOTING.
troubleshooting - выявление повреждений
to reduce - уменьшать, снижать
considerably - значительно
filling - заполнение
| occasionally
| - изредка, время от времени
|
| afterwards
| - впоследствии
|
| circumstance
| - обстоятельство
|
| 0.- ring
| - уплотнительное кольцо
|
| connection
| - связь, соединение
|
| gasket
| -прокладка
|
| sealing surface
| - уплотняющая поверхность
|
| deposits
| - отложения
|
| flow rate
| - расход
|
| visible
| - видимый
|
| further
| - далее, затем, зд: сильнее
|
| deformed
| - деформированный
|
| double
| - двойной
|
| adjoining plate
| - прилегающая (примыкающая) пластина
|
| volume
| - объем, размер
|
| to decrease
| - уменьшать
|
| respective
| - соответствующий
|
| hole
| - отверстие
|
| to apply
| - применять
|
opposite side - противоположная сторона
TEXT
Temperature of coolers is controled by adjusting the cooling liquid outlet valve. The inlet valve is left open which ensures a constant pressure within the cooler. This is very important with sea water cooling where reducing pressure can result in air remaining in a cooler which will considerably reduce the cooling effect. Vents provided in the highest point of coolers should be opened on first filling and occasionally afterwards. Drain plugs are also fitted at the lowest point in coolers.
The plate heat exchangers should be opened and cleaned regularly and under normal circumstances every six months. The 0-rings in the connections, the gaskets and the sealing surfaces on the back of the plate should be checked before the heat exchanger is reassembled. (600)
SYMPTOM CAUSE REMEDY
| 1. Reduced cooling efficiency.
| a) Deposits
| a) Check the heat transfer surface for deposits and if any remove them.
|
|
| b) The flow rates for oil and water are incorrect
| b) Check that flow rates for oil and water are correct.
|
| 2 Leakage visible on the outside of the plate pack.
| a) The plate pack is not tightened enough.
| a) Tighten the plate pack further
|
|
| b)The gaskets and sealing surfaces are not clean and the plates are deformed.
| b) Replace the gaskets and the damaged plates.
|
|
| c) Corrosion between the double gaskets or in the same area of the adjoining plate.
| c) Replace the gaskets or the plate
|
| 3. Fresh water or lubricating oil volumes decrease in the respective systems.
| There is a hole in the plate.
| Remove the lower sea water valve, apply a test pressure on the opposite side and, if liquid flows from the side under pressure, replace the faulty plate.
|
TEXT 3
DISTILLATION SYSTEMS OIL/WATER SEPARATOR. SEWAGE
TREATMENT. INCINERATOR.
