Structure and Function
A: PL120101.054
B: PL120100.054
E: 03.93 / T. Weiß
G: 06.93 / T. Weiß
Chapter: 5.4
Page: 6
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This setting is only necessary if the pump type plate does
not give 210 bar for DR.
a) For “Withdraw nozzle” movement set pressure at 100%
and speed at 70%.
c) Initiate “Withdraw nozzle” movement and set “Amplifier”
potentiometer at a pressure of 220 bar (3190 psi).
d) Initiate movement “Withdraw nozzle” and set maximum
pressure regulation of pump at 210 bar (3045 psi).
e) Repeat pressure setting of relief valve amplifier.
5.4.11 Hydraulic oil preheating
The cold hydraulic oil is automatically preheated as soon as
the hydraulic pump starts working until the preset heating
temperature of 40°C (104° FAR) is attained.
If the oil temperature is below this level, an error message is
issued on the machine display, and the machine cannot be
started. After the 40°C (104° FAR) level has been attained,
the hydraulic oil preheating is switched off, and the machine
is ready for operation.
During operation, the oil temperature is continuously kept at
45°C (113° FAR). This is achieved by opening and closing
the cooling water valve of the oil cooler.
If the oil temperature exceeds 60°C (150° FAR), the machine
control is switched off.
Always ascertain the cause of this temperature rise and
eliminate the defect (e.g. cooling water defect, solenoid valve
of oil cooler closed).
You can restart the hydraulic unit after pressing the stop
button once. Thus the oil can be recooled. During this cooling
phase the machine remains inactive.
5.4.12 Core pull (optional)
The hydraulic core pull consists of a base plate which holds
ATTENTION !
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