63 K0430 Issue No. 2Flushing - Replenishing or Changing the Hydraulic Fluid (Figure A3)If necessary, to remove any contaminants, flush out the hydraulic system as follows.a. Connect the bleed hose assembly (1) to the priming port and a bleed hose to thepressure port as shown below:1 Bleed hose assembly 2 Priming pump 3 Screw-press 4 Isolation valveO - Open C - ClosedFigure A3 - Flushing/Filling Connectionsb. Fill the priming fluid container with clean hydraulic fluid of the required type. Usethe priming pump (2), to pump fresh hydraulic fluid through the system until cleanhydraulic fluid, free of air bubbles, emerges into the container at the output port.Discard the contaminated fluid expelled during this process.c. Remove the bleed hose assembly (1) located to the output port and, to preventthe ingress of any contaminant, fit a blanking plug in its place.d. Close the isolation valve (4) and remove the bleed hose assembly (1) from thepriming inlet.e. Clean off any surplus oil that may have spilled onto the instrument casing.The instrument is now ready for operation or storage. If storing, apply a label detailingthe type of hydraulic fluid contained in the instrument. For long term storage, it isrecommended that the instrument be drained and stored empty.14233SHydraulic Calibrator Versions Operation
