S
TARTING
UP
AND
OPERATING
C
HAPTER
7
THP 94/42 R 4 XXT
THP 125/42 R 4 XXT
THP 140 H/42 R 4 XXT
GB-07.2005
7-27
7.6.4
Instructions for pumping (depending on the machine)
•
The max. running speed of the diesel engine must under no circumstances be exceeded, since otherwise the
hydraulic pump will overspeed. The permissible speeds can be found on the machine data sheet.
•
Pay attention if the piston strokes are shortened and if
necessary take action to counteract this (see Chapter
8 “Trouble-shooting”).
•
If during continuous operation under heavy loading the
oil temperature exceeds 80
°
C, the indicator lamp will
light (Item 4, Fig. 5.2). Immediately top up the water
tank with cold water.
•
After periods of heavy loading of the engine, never just switch it off, allow it to idle and cool down, at a diesel
engine speed of approx. 1,000 rpm. This is particularly important for turbo diesel engines.
•
Set the engine speed to more than the minimum speed (500-700 rpm).
•
Damage due to operator error is not covered by the
WAITZINGER
warranty.
•
If the temperature continues to rise, change the water continuously. Discover the cause of the overheating and
rectify it. If the oil temperature rises above 40
°
C the thermostatically controlled fan under the master control
block will cut in.
•
Under no circumstances spray the oil tank with water.
This usually leads to a build-up of condensate water
and damage to the hydraulic pump.
If the cooling measures are insufficient, direct a water
jet on to the drive cylinder (hydraulic cylinder) as shown
here.
All pumps have a thermo-electric cut-out. If the oil
temperature exceeds 80
°
C the pump will be switched off
automatically and the red indicator lamp on the control
cabinet or control desk (Item 4, Fig. 5.2) will light up.
Fig. 7.30 Water in the wash-out tank
Fig. 7.31 Water on the drive cylinder
