Series 505G2 SilentFlo™ Hydraulic Power Unit 5
HPU Setup 35
Operation 39
Operator’s Panel 40
Main Screen 40
Status Screen 43
Operating the HPU Locally or Remotely 45
Recovering from an Interlock 47
Changing the Water Flow 48
Resetting the Thermal Overloads and Circuit Breakers 49
Adjusting the Hydraulic Pressure 50
Adjusting the HPU Output Pressure Level 51
Auto-Cooling Valve (adjustable) 51
Low/High Pressure Functionality 54
Maintenance 57
Before You Begin 58
Spare parts 58
Lockout/tagout 58
Operating the HPU 58
Routine Maintenance Overview Checklist 58
Checking the Hydraulic Fluid 61
Replacing the Return Line Filter 62
Sample the Hydraulic Fluid 64
Appearance of Hydraulic Fluid Sample 66
Replacing the Hydraulic Fluid 67
Accessories 71
High Pressure Filter Kit 72
Replacing the Filter Element 72
Surge Suppressor Kit 73
Required equipment 73
Installation procedure 74
Precharging the Surge Suppressor Accumulator 75
Determining a pressure check interval 75
Checking precharge pressure 75
Changing the precharge pressure 76
Lifting Kit 77
Caster Kit 78
Appendix A: HPU Maintenance and Service Logs 81
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