Delirium Contents 1. Preface 2. Installation and assembly Before installation 2.2 Notice during installation 2.3 Notice in use 3. Hydraulic Fluid 3.1 Fluid Recommendations 3.2 Fluid maintenance 4. Power Unit Maintenance 4.1 Maintenance: 4.2 Inspection 4.3 Troubleshooting 5. Adjustment method 5.1 Adjustment for preset pressure of relief valve 5.2 Lowering speed adjustment 5.3 Emergency descent when power cut: 6. Model specifications oo b brownness-= 7. Outline dimension 8. Electrical schematic 8.
In order to use our products safely and effectively, this manual introduces and explains matters needing attention, maintenance, adjustment methods, schematic and outline dimension. Please read this manual carefully before operating the equipment. Ensure the operator is adhering to the proper method of use. This product applies to auto hoist and scissor lift applications. Please read this manual and other related manuals carefully before installing and operating.
2.2 Notice during installation * Power unit must be wired by a qualified electrician. * Ensure the power being supplied is shut off and locked out when wiring the power unit. * Maximum acceptable voltage drop is 10% of rated voltage. * Use the wire of which the diameter is more than 2.5mnfto reduce voltage drop. Also shortening the length of the wire will help. * Starting at a lower than acceptable voltage will lead to poor performance and motor failure.
* Always pause a minimum of 2 seconds before between lift activation. * The working temperature for the power unit is —~13° Fto 140° F (-25°C to 60C). * The power unit should never be exposed to rain or snow. * Severe vibration and electromagnetic interference should be avoided.
4. Power Unit Maintenance 4.1 Maintenance > Disconnect or terminate power to equipment and lower platform before attempting to access power unit for maintenance. D> Ensure that electric wire and hoses are of the same specifications as originals when replacing. D> Ensure that other components are of the same specifications when replacing. I> Ensure the hydraulic system as been depressurized before cracking hydraulic lines. > Often clean the equipment and the environment around equipment.
4.3 Troubleshooting Failures Possible causes Solutions 1. Wrong wire connection i i leads to motor rotating 1. Correct the wire connection in wrong direction 2. Insufficient hydraulic fluid | 2. Add hydraulic fluid in the tank into the tank 3. Suction tube is damaged | 3. Replace the suction tube 4. Coupling is damaged 4. Replace the coupling 5. Suction filter clogged 5. Clean or replace the suction filter 6. Release valve is 8. Inspect valve and clean blocked by contamination or replace it 7.
Failures Possible causes Solutions Motor runs but the cylinder rises slowly 6. Relief valve is contaminated 8.Inspect valve and clean or replace the relief naive 7. Relief valve's setting pressure is low 7. Reset the valve 8. Hydraulic fluid is deteriorated or contaminated 8. Change hydraulic fluid as well as cleaning suction filter and reservoir 9. Gear pump is damaged 9. Change the pump 10. Cylinder is damaged 10. Repair or replace cylinder 11. The emergency release valve is not fully closed 11.
Failures Possible causes Solutions Abnormal noise 3. Motor is overloaded 3.Reduce load or increase the relief valve setting pressure(if manufacturer allows) 4. Suction filter clogged 4. Clean or replace the suction filter 5. Gear pump is damaged 5. Change the pump 8. Hydraulic fluid is deteriorated or contaminated 6. Change hydraulic fluid as well as cleaning suction filter and reservoir 7. Relief valve is damaged 7. Change the relief valve Abnormal start up 1. Power supply voltage is insufficient 1.
5.1 Adjustment for preset 5.3 Emergency descent when pressure of relief valve * Remove the screw cap and turn the adjustable piston to reset the pressure of the relief valve. * Always use pressure Gage when setting relief valve. Turning the adjustment screw 45° in CW direction can increase the pressure by approximately 175psi and vice versa. Tighten the cap after pressure setting. * Release the pressure and pressurize several times ensuring you have achieved the factory recommended pressure setting. 5.
7. Outline dimension The following outline dimensions are mainly for the power units with 3-phase steel housing motors and rectangle plastic oil tanks. 255 175 .
Tank capacity (L) L1 (mm) L2 (mm) L3 (mm) L4 (mm) 6 335 611 175 185 8 M5 891 165 185 10 470 746 165 185 12 540 818 165 185 14 605 881 178 185 8.1 Single-phase electrical schematic V' Parts description: KM--Contractor SB--Start Button V Startup Pressing the start button switch SB will energize the coil of the contractor, thus close the main contact of KM and get the motor running at the same time. The motor has only one rotating direction.
9. Hydraulic schematic 9.1 Manual release valve hydraulic schematic T V Parts description: 1--Reservoir 6--Buffer valve 2--Suction filter 7--Check valve 3--Gear pump 8--Manual release 4--Motor valve 5-Relief valve 9--Throttle valve V Lift cycle ‘When AC motor [part 4] is started, the air in the pump [part 3] and tube will be released through buffer valve[part 6] reducing the amount of load the motor will start against and then the buffer valve[part 6] will close.