Page 3-23
Dynamic Acera 03/05 Rev. 05
Maximum / Minimum VR1 overide Protec-
tion - Pre minor change SK160~SK480 only
Located inside the mechantro controller on the
main circuit board is a trimmer dial VR1 which
will override the screen preset flow setting proce-
dures. Not only will this feature provide protection
for equipment in “A” or “M” modes, it can also be
used to dial in flows less than which is stored in
memory of “B” mode.
This Flow control protection can be used to pro-
tect “auxiliary hydraulic circuit” but will not limit main
excavator boom,arm,bucket swing or travel
speed.Only the auxiliary attachment flow is con-
trolled through the setting. See FIGURE 3.13.d.
Proper Adjustment thru the VR1 trimmer is
achieved by installing a proper flow meter in Se-
ries with the auxiliary attachment and after the
proper axillary attachment pressure has been
adjusted thru that circuit’s relief cartridge then in-
sert a small flat blade screwdriver into the VR1
trimmer and adjust either clockwise or counter
clockwise for increased or decreased pump flow.
Note:
Machine is shipped from the factory with
the VR1 trimmer set between 30%~ 95% of flow.
FIGURE 3.13.d
Auxiliary Flow Control Adjustment Potentiometer - (VR1 Trimmer)
