9. Coolant system
275
4) To fix the filler neck on the fresh water cooler,
press the small copper tube inside the filler
neck with the special tool.
Note:
The top of this tube should be under the
sealing surface of the filler neck for the
pressure cap.
5) Fit the pressure cap on the filler neck.
Refer to 4.2.2 for tool 1 and tool 2.
9.5.5 Function of the coolant recovery
tank
The pressure valve opens to discharge steam
when the steam pressure in the fresh water tank
exceeds 82-109 kPa (0.84-1.11 kgf/cm
2
).
This consumes water. The coolant recovery tank
maintains the water level by preventing this
discharge of water.
The steam discharged into the coolant recovery
tank condenses into watch, and the water level in
the tank rises.
When the pressure in the fresh water system
drops below the normal value, the water in the
coolant recovery tank is sucked back into the fresh
water tank to raise the water back to its original
level.
The coolant recovery tank facilitates long hours of
operation without water replacement and
eliminates the possibility of burns when the steam
is ejected from the filler neck because the pressure
cap does not need to be removed.
9.5.6 Specifications of coolant recovery
tank
Filler neck Part No. Copper tube Part No.
129673-44110 129673-44150
Capacity of
coolant recovery tank
Overall capacity 1.3 L
Full-scale position 0.8 L
Low-scale position 0.2 L
001588-00E
Press the copper tube
in the filler neck
Copper tube
Tool 2
Sealing surface
001589-01
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