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7.2 Manual operation

For a test run, servicing or temporary switching on or off of the
engine during start-up, the pump unit can be started manually by
pressing the buttons S1 "Fire pump on, starting unit 1" or S2
"Fire pump on, starting unit 2". The engine is then stopped with
the button S3 "Fire pump off".

For an emergency shut-down, pull the STOP-lever on the
injection pump. See fig. 24. Alternatively, close the fuel tap on the
tank. See fig. 5 or fig. 7, pos. 7.

8. Taking the pump out of operation

Procedure

1. Close the isolating valve on the discharge side.

2. Close the isolating valve on the suction side.

3. Close the fuel tap (fig. 5 or fig. 7, pos. 7).

4. Switch off fuses F1, F4, F5, F8, F9, F6 and F7 in the control

cabinet (fig. 5 or fig. 7, pos. 26).

5. Disconnect the battery.

If the pump is to be drained for a long period of inactivity, inject a
few drops of silicone oil on the shaft. This will prevent the shaft
seal faces from sticking. Turn the shaft by hand once a month.
To do this, loosen the coupling as described in section

5.1.9 Aligning pump and engine

During extended periods of inactivity, follow the measures listed
in section

3.3 Storage

To re-start the pump unit, refill the engine oil and cooling liquid
and align the coupling. Then continue as described in section

6. Start-up

9. Maintenance

9.1 Checking the function of the pump unit

A test run should be carried out once a week. For procedure,
see section

6. Start-up

9.2 Routine pump checks

9.2.1 Shaft seal

Mechanical shaft seals are maintenance-free and almost leak-
free. In case of considerable and increasing leakage, check the
mechanical shaft seal immediately. If the seal faces are
damaged, replace the entire shaft seal.

9.2.2 Lubrication of pump bearings

The type of bearing and lubrication appears in the following table:

To grease the bearings, use lithium-based grease according to
these specifications:

•

NLGI class 2 or 3.

•

Viscosity of basic oil: 70 to 150 cSt at +40 °C.

9.3 Routine engine checks

The following filling levels and components must be checked
regularly:

Oil level

Once a week.

Cooling system:

Once a week.

Fuel system:

Once a week.

Exhaust gas system: Once a week.

Air filter:

Once a week.

V-belt:

Once a month.

9.3.1 Oil level

Fig. 25

Arrangement of the oil dipstick

To read the oil level, pull out the oil dipstick (JU4H and JU6H) or
unscrew it (JW6H) (fig. 25, pos. 29). Oil level measurements are
to be taken when the engine is cold. The oil level must be
between the minimum and maximum mark on the oil dipstick.
See figs 26 and 27.

Fig. 26

Correct oil level, JU4h and JU6H

Fig. 27

Correct oil level, JW6H

Filling the oil

Unscrew the oil filler cap (fig. 31, pos. 30) and fill oil up to the
corresponding mark on the oil dipstick.

Note

Regular test runs to ensure operation efficiency
should be limited to a maximum of 30 minutes
per week.

Note

The operator is responsible for ensuring that all
maintenance, inspection and installation work is
performed by qualified personnel. A regular
maintenance plan will help avoid expensive
repairs and contribute to trouble-free, reliable
operation.

Warning

Before starting work on the pump, make sure that
the pump unit has been switched off and cannot
be accidentally switched on. Maintenance work
must only be performed by qualified personnel
authorised by VdS.

Caution

In addition to here-mentioned checks and time
limits, for installations manufactured according
to VdS, the regulations listed in VdS 2092 for the
maintenance of sprinkler systems apply.

Pump

Bearing

Lubrication

NKF 50-200
NKF 65-200
NKF 80-200
NKF 80-250
NKF 150-400
NKF 150-500

6306.2ZR.C3

Maintenance-free, greased-
for-life bearings.

JU4H

JW6H