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8.5 Pressure settings and adjustments
High pressure relief valves setting
The maximum pressure setting is adjusted from factory (315 bar, 4569 psi), but can
be changed by the pump safety block, see Fig. 22: Pump safety block
Remove plastic cap, release the lock nut and adjust the setting screw, Clockwise
increase maximum pressure level, counter clockwise decrease maximum pressure
settings. Tighten the lock nut after adjustment.
Fig. 22: Pump safety block
8.6 Temperature settings for cooling
The speed of the cooler fan is controlled by a VFD in the control cabinet via analog
output 2 (temperature) on the level/temperature sensor. As default the cooling fan
will start when the temperature in the oil tank is 40 °C [104 °F] and at
50 °C [122 °F] the maximum speed of the cooling fan will be reached. Depending
on the application and oil type in the system, a change of the default values can be
needed. Contact your Bosch Rexroth representative for advice.
How to change the values for when the cooling fan will start and when the maximum
speed will be reached:
1. Cooling fan start - change A2.Lo value. For more info, see operation manual
RE50222-B, chapter 4.8.2 (Analog output x: Assignment of the lower limit).
2. When maximum speed of the cooling fan will be reached - change the A2.Hi value.
For more info, see operation manual RE50222-B, chapter 4.8.1 (Analog output x:
Assignment of the upper limit).
The alarm (stop) level for the oil temperature in the tank is set to 63 °C [145 °F] and
should normally not be changed. Contact your Bosch Rexroth representative if you
need to change this value.
Hägglunds DOb, RE 15327-WA/05.2017, Installation and maintenance manual, Bosch Rexroth AB
Commissioning
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DD00082663
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