13
Note :
The copper pipe connected to the pressure switch has antifreezing solution for freezing prevention,
So, refilling the antifreezing solution in the winter time is required.
(Pressure and Pressure Variation Adjusting Bolt) (Low and High Pressure Switch)
(3) Air Extraction Method for the Feed Water Pump
Open the air cock on the outlet of the feed water pump and extract the air until the
water is coming out strongly. Including air in the pipe, water feeding is not performed
smoothly and shorten the pump life due to impeller abrasion.
So, periodic air extraction must be performed.
* Note:
In the winter time, open the upper and lower air cock for exhausting the water in the
pump in the no load condition for about 5 seconds to remove the residue attached on
the impeller. When operation the pump manually, push the magnetic switch
of P.5 (7) using the screwdriver, and then operate it for 5 to 10 seconds.
(Feed water pump)
(4) Air Extraction Method for the Oil Heater(For Heavy Oil)
Operate the oil pump and open the air cock valve for air extraction until fuel oil is coming out strongly. Including the
air in the oil heater causes not to raise the oil pressure. So, periodic air extraction must be performed.
(5) Setting Method for the Oil Pump Pressure
The following values are the standards of the oil pump pressure:
Kerosene, light oil --------------------------15 Kg/cm2
Bunker-A oil, B oil, C oil --------------------20 Kg/cm2
The pressure adjusting of oil pump to one other than the standard pressure is to be used by a L-wrench and
screwdriver(-).
