Bosch Rexroth Hagglunds DUc MS2 Installation & Maintenance Manual page 62

62/88 Hägglunds DUc Drive unit | Commissioning
Bosch Rexroth AB, Version 06.2020, RE 15326-WA
2. Control pressure adjustment
The control pressure to be measured at port E2. The control pressure shall be
adjusted to: 30 1) bar/435
position.
Special for pump size SP355, adjust the pressure to:
35 1) bar/508 1) psi + (p –p
n
= should be about 5-12 bar [73-175 psi], depending on the pump size and electric
motor speed. Release the lock nut and adjust the control pressure to the necessary
level by turning the setting screw.To get the value p
port with the pump in neutral. To get the value p
port with the pump swivelled out to >50 % stroke (Secure that the flushing valve
has moved).After adjustment tighten the setting screw by means of the lock nut.
Note 1) This pressure has to be 2 x charge pressure + 5 bar/73 psi (SP355)
3. High pressure relief valves setting A and B side
For setting levels see the order specific Hägglunds DUc documentation.
The high pressure relief valve setting should be 40 bar [580 psi] > compensator
pressures setting.
To adjust the high pressure relief valves A/B-ports have to be blocked and the
compensator pressure level have to be adjusted down to minimum.
Swivel the pump to ~50 % stroke in A-side and adjust the compensator pressure up
to the requested high pressure level (high pressure relief valves setting).
Adjust the high pressure relief valve A-side down to the same level as to the
recently set compensator level. Read the working pressure in M1 port (SP40-180)
or MAB-port (SP250-750)
After that do the corresponding procedure on B-side.
Notice! The high pressure relief valves must be adjusted before the compensator
pressure adjustment.
4. Pressure compensator setting
Release the lock nut and adjust the setting screw. The pressure compensator shall
be adjusted with blocked main-port or blocked actuator. Stroke the pump to about
50% of max flow. Set the compensator pressure to a value according to the order
specific Hägglunds DUc documentation. Measure the pressure at port M1 (SP40-
180) or MAB (SP250-750).
5. Manual control of flow on SP pump
The SP pump flow can be controlled manually with a button on each side of the
pump controller. The manual control must be handled with high precaution as this
will override all interlock of the drive.
Manual control of pump
Risk of personal injury or damage of epuipment
▶ Use with high precaution
1) psi + (p –p ) with the pump in neutral/zero stroke
n s
) with the pump in neutral/zero stroke position. (p
s
s
CAUTION
measure the pressure in ME3-
n
measure the pressure in ME3-
- p )
n s