Cooling System; Fuel System; Exhaust Gas System; Air Filter - Grundfos Fire NKF Montage- Und Betriebsanleitung

9.3.2 Cooling system

1. Examine all the pipes of the cooling system for leaks.
Replace defective pipes.
2. Check the level of cooling liquid in the heat exchanger.
When the engine is cold, the cooling liquid must reach the
lower end of the filling port (JU4H and JU6H), or the maximum
mark (JW6H), respectively. If the fill level of the cooling liquid
is too low, re-fill with cooling liquid.
3. Check the level of cooling liquid in the equalisation tank.
When the engine is cold, the fill level must reach the mark
"Full Cold". If the fill level of the cooling liquid is too low, re-fill
with cooling liquid.
4. Check if the pressure gauge of the cooling circuit displays a
pressure value when the engine is running.
Re-filling of cooling liquid
A
Fig. 28 Heat exchanger with equalisation vessel
If there is too little cooling liquid in the heat exchanger, open the
cap of the heat exchanger (fig. 28, pos. A) and fill cooling liquid
up to the lower end of the filling port (JU4H and JU6H) or to the
maximum mark (JW6H). Close the cap of the heat exchanger.
If there is too little cooling liquid in the equalisation vessel, open
the cap (fig. 28, pos. B) of the equalisation tank. When the engine
is cold, fill cooling liquid up to the mark "Full Cold" (JU4H and
JU6H) or to 100 mm above the tank floor (JW6H). Close the cap
of the equalisation tank.
Warning
Do not open cap of equalisation tank or heat
exchanger when the engine is warm. Tank is
under pressure! Danger of burns from escaping
liquid!
Figure 28 shows the heat exchanger and the extension vessel of
the engine series JU4H and JU6H. The arrangement in engines
of series JW6H can be seen in fig. 7 and fig. 8.
Only use prescribed coolant.
Caution
See section 4.4.3 Engine.

9.3.3 Fuel system

1. Check all fuel pipes for leaks. Replace defective fuel pipes.
To fasten the fuel pipes, use Norma type torque brackets.
2. Read the fuel level from the fuel level indicator (fig. 29,
pos. 4). To prevent damage by condensation and to maintain
the system ready for operation, the fuel tank must always be
full.
3. Drain the condensate from the fuel filter and fuel tank.
B
16
15
Filling the fuel
Fig. 29 Fuel tank with fittings
The fuel tank can be filled either from the top using a canister,
or using the manual filling pump on the side (fig. 29, pos. 5).
For filling quantities, see section 4.4.3 Engine.
To fill using a canister, open the tank cap (fig. 29, pos. 6) and
pour in the fuel. After filling, close the cap.
To fill using the hand pump, connect the tube from the diesel
barrel to the lower connection port of the hand pump (fig. 29,
pos. A) and connect a second tube to the upper connection port
of the hand pump (fig. 29, pos. B). Then open the tank cap and
put the tube from the upper connection port of the hand pump into
the tank opening. Operate the hand pump to fill the tank with fuel.
When the tank is full, take the tube out of the tank and close the
tank cap. Disconnect both tubes from the hand pump.
Caution Only use diesel fuel.
Draining the condensate:
Drain the condensate from the fuel filter and fuel tank.
The condensate collector is under the fuel filter (fig. 32, pos. A).
Loosen the knurled nuts of the condensate collector and only
refasten them when the diesel fuel runs clean, i.e. without water.
Collect the fuel containing water in a suitable container and
dispose of it in an environmentally sound way.
There is a drain screw in the tank bottom, (fig. 30, pos. 9).
Loosen the drain screw and remove accumulated water and dirt.
Collect the diesel fuel in a suitable container and dispose of in an
environmentally sound way. Only retighten the drain screw when
the diesel fuel runs clean, i.e. without water.
Fig. 30 Drain screw of fuel tank

9.3.4 Exhaust gas system

Check the entire exhaust pipe system for leaks whilst the engine
is running. Tighten any loose pipe connections. Replace defective
pipes immediately.

9.3.5 Air filter

Examine the air filter for dirt particles. Replace dirty air filters.
To remove the air filter, loosen the brackets and pull off the filter
element. To assemble it, do the same in reverse order.
We recommend to change the air filter every 6 months.
4
6
B
5
A
9
19