CONTROLLED AUTOMATION WOULD RECOMMEND A RETROFIT ON THE ABOVE UNIT DUE TO OBSOLETE PARTS AND POOR DESIGN.
1.) ARE ANY OUT-FEED DUMPS, TRANSFER CONVEYORS, ETC. POWERED FROM THE BEAMLINE H.P.U.? IF SO, DESCRIBE OPERATIONS OF TRANSFERS, PRESSURES THEY OPERATE AT, AND IF VALVES ARE MOUNTED ON H.P.U. OR REMOTELY.
2.) WHAT IS MAIN ELECTRIC SUPPLY VOLTAGE: 230V, 460V, 575V? (CHECK VOLTAGE COMING INTO MACHINE.)
3.) HAS A NEW OR REBUILT HYDRAULIC POWER UNIT BEEN PURCHASED TO GO WITH YOUR RETROFIT? IF SO, DISREGARD THE REST OF THE QUESTIONS IN THIS SECTION.
4.) ARE THE PUMPS AND ELECTRIC MOTOR MOUNTED UNDERNEATH, OR TO THE SIDE OF THE HYDRAULIC OIL TANK?
5.) DOES THE UNIT HAVE AN OIL COOLER? IF SO, GET ALL NAMEPLATE DATA FROM THE COOLER AND ITS FAN MOTOR.
RETROFIT HYDRAULIC POWER UNIT WITH OIL COOLER MOUNTED ON RIGHT SIDE
6.) GET ALL NAMEPLATE DATA FROM BOTH PUMPS AND THE ELECTRIC MOTOR. (MAKE SURE TO LIST MANUFACTURER.)
TYPICAL MOTOR AND PUMP NAMEPLATES
7.) ARE THE PUNCH CYLINDER SOLENOID VALVES ALL HELD TOGETHER WITH TIE BOLTS? (THESE ARE LONG BOLTS THAT CONNECT A SERIES OF SOLENOID VALVES) THIS TYPE OF DESIGN IS OUT DATED AND MUST BE REPLACED WITH A NEW OR REBUILT H.P.U.
8.) HOW FAR IS THE H.P.U. MOUNTED FROM THE BACK OF THE WEB PUNCH FRAME? WE NEED TO KNOW THESE DIMENSIONS IN ORDER TO REINSTALL WITH PROPER HOSE LENGTHS.
9.) DOES THE UNIT HAVE AN OIL HEATER? (TO DETERMINE, LOOK FOR HEATING ELEMENT AND THERMOSTAT)
10.)CONDITION OF HOSES:
ARE THERE ANY LEAKS?
IS THE UNDERLYING METAL SHOWING ANYWHERE ON THE HOSES?
OVERALL CONDITION OF HOSES?
11.) WHAT IS THE CONDITION OF THE H.P.U. ELECTRIC MOTOR ? (IF POSSIBLE, CHECK TO SEE IF BRUSHES ARE WORN.)
LIST ANY OTHER OBSERVATIONS THAT MAY BE HELPFUL.
12.) ARE THERE ANY LEAKS IN THE H.P.U VALVES? IF SO, VALVES WILL NEED TO BE REPLACED.
13.) DOES UNIT BUILD 5,000 PSI FOR PUNCHING WHEN HIGH PRESSURE VALVE IS OPERATED? THIS MAY INDICATE A BAD COMPONENT OR COMPONENTS ON THE H.P.U.
14.) HYDRAULIC OIL CONDITION: DIRTY OIL CAN CAUSE THE PUMP OR OTHER H.P.U. COMPONENTS TO GO BAD.
CAN DIRT OR METAL FRAGMENTS BE FOUND IN THE OIL?
WHAT IS THE COLOR OF THE OIL?
OVERALL HYDRAULIC OIL CONDITION?
WHAT IS THE CONDITION OF THE HYDRAULIC PUMP? ( POOR PRESSURE BUILD MAY INDICATE A BAD PUMP)
GOOD
FAIR
BAD
15.) IF POSSIBLE, SEND A COPY OF THE ORIGINAL WA WHITNEY HYDRAULIC SCHEMATIC TO CONTROLLED AUTOMATION.