P4 Level Loader Model Number ___________________ Serial # _________________________ Date Placed in Service _____________ IMPORTANT: READ CAREFULLY BEFORE INSTALLING OR OPERATING LIFT Part orders are subject to a $50 miminum charge May 2006
INTRODUCTION The P4 Level Loader is designed to allow faster, safer, and easier pallet loading and unloading. Pallets may be loaded or unloaded in a single step, using a fork truck, or hand pallet truck. Using a pushbutton or footswitch control, the operator can position boxes or containers at a convenient working height. This allows workers to load or unload without bending or stretching. The unit includes a photo eye toe guard feature. A photo eye is positioned near the front of the unit.
TABLE OF CONTENTS INTRODUCTION ............................................................................................................... 2 SAFETY ........................................................................................................................ 4 INSTALLATION INSTRUCTIONS ...................................................................................... 4 Preparation ......................................................................................................
SAFETY The safety of all persons installing, using, servicing, or working near the P4 Level Loader unit is of paramount concern to Presto. The P4 Level Loader unit is a powerful machine with moving parts, and is CAPABLE OF CAUSING PERSONAL INJURY IF PROPER PRECAUTIONS ARE NOT TAKEN. Therefore, throughout this manual, Presto has identified certain hazards which may occur in the use of the P4 Level Loader unit, and provided appropriate INSTRUCTIONS or PRECAUTIONS which should be taken to avoid these hazards.
3. During shipping, the platform of the unit is raised 5-1/2", and this platform is supported on two pins. This allows a space under the platform. When you want to move the unit, put a pallet jack under the platform and lift the unit. This is the best way of moving the unit. CAUTION! Always raise the platform and insert the pins before you move the unit. If you try to move the unit in another way, the frame may be bent. Be sure to remove the pins before you operate the unit.
1. The unit is supplied with a power cord which is 10' long. You must provide a two-prong outlet within this distance from the unit. The circuit should be provided with a 20 amp circuit breaker or fuse. 2. Warn others to stay away from the unit. Operate the unit through its full range of travel. The unit should rise smoothly with a quiet humming sound, and lower smoothly and quietly. Raise and lower the unit a few times to check the lifting action.
on the relief valve, you may overwork the unit. This can cause the unit to fail suddenly, and you may be hurt. WARNING! As you operate this lift, follow these rules: 4. Clean up any spilled hydraulic fluid. Spilled hydraulic oil is slippery, and may present a fire hazard. If you clean up any spilled fluid, you will be able to tell right away if the unit begins to leak. • Do not put your hands or feet under the lift platform. 5. Figure 1 shows the safety labels on this unit.
suddenly. Someone may be hurt, or the unit and load may be damaged. onto the operator’s toes. If this safety system is not working correctly, do not operate the unit. Call a maintenance worker right away. • The unit is designed so it can lift the rated load if the load center is placed over the center of the platform. (The load center should be 24" or 61 cm from the rear of the platform.
WARNING! As the platform moves up and down, “pinch points” are created as shown in Fig. 2. STAY AWAY FROM THESE PINCH POINTS! Part of your body or clothing may become caught, and you may be hurt. Do not put your hands or feet under the platform. Do not stand or sit on the platform. 2. Before lifting, be sure the pallet is pushed up against the back of the unit. Be sure the fork lift or pallet truck is clear of the unit before you begin lifting. 3. Plug in the electrical cord.
2. Before lowering the platform, be sure all workers are clear of the unit. WARNING! As the platform moves up and down, “pinch points” are created as shown in Fig. 2. STAY AWAY FROM THESE PINCH POINTS! Part of your body or clothing may become caught, and you may be hurt. 3. There is a photoelectric toe guard near the front of this unit. If anything blocks the photoelectric beam, the unit will stop. This is designed to prevent an operator from lowering the platform onto his or her feet.
operator. If the labels are worn or missing, or have been painted over, REPLACE THEM before releasing the lift for operation. Fig. 1 shows the safety markings on this unit. Sometimes the fittings can be worked loose by the vibrations from the power unit. WARNING! If a hydraulic fitting becomes loose, or if a hydraulic hose breaks, the hydraulic fluid may escape from the system under pressure. If the platform is raised when this happens, it can drop quickly.
more than 2 or 3 seconds. You may damage the pump. Troubleshooting Check List All servicing should be done by qualified personnel. Qualified personnel should be able to read and understand wiring and hydraulic diagrams. They should be able to troubleshoot live electrical circuits safely and in accordance with accepted practice. FOR SAFETY’S SAKE, if in doubt, please contact your distributor or Presto Lifts at (800) 343-9322.
Down valve plunger Down valve strainer Relief valve cap Retainer ring Nut Relief valve adjusting screw Down valve solenoid Outer spring Inner spring Relief valve poppet Coupling – pump to motor Check valve cap O-ring Check valve spring Check valve ball Gasket Fig.
valve has been included for the protection of all of the workers who use the unit. 3. If the motor is not running, check the electrical plug, the circuit breaker or fuse, and the wiring to the motor. 4. The hydraulic oil level may be low. In order to check the level, lower the unit completely and unplug the power cord. Remove the rear cover on the unit. When the platform is lowered as far as possible, the oil should be about 1/2’’ to 3/4’’ inch below the top of the tank.
eye. The reflector may need to be cleaned or replaced. 2. The down valve may be de-energized. While the platform is lowering, the down valve should be energized and fully open. Check the solenoid in the valve with a voltmeter. The valve must be clean and free to operate. Remove the solenoid, then the down valve. Look for dirt or metal chips which could block the valve action. Clean the valve plunger with kerosene, then blow it clean with compressed air.
Ordering Replacement Parts Presto Lifts has carefully chosen the components in your unit to be the best available for the purpose. Replacement parts should be identical to the original equipment. Presto Lifts will not be responsible for equipment failures resulting from the use of incorrect replacement parts or from unauthorized modifications to the unit. Presto Lifts can supply all replacement parts for your lift. With your order, please include the model number and the serial number of the unit.
RESTOCKING POLICY Presto Lift, Inc.’s goal is for you to be satisfied with your order. Merchandise may be returned, but returns will be subject to a restocking fee to cover the costs Presto Lift, Inc. incurs which include but are not limited to handling, storage of the units, etc. Presto Lift, Inc. will issue refurbishing costs where end-user wear is apparent. We would prefer to not charge for these costs but find it necessary any apologize for any inconvenience.
RETURN MATERIALS AUTHORIZATION (RMA) PROCEDURES Although Presto Lift, Inc. is not legally obligated to issue a credit for any merchandise, the RETURN MATERIALS AUTHORIZATION (RMA) PROCEDURE is provided as a courtesy to our customers in the event they do not receive what they wanted. If a customer wishes to return a Presto Lift, Inc. product, the first step in the process is to request an RMA number from Presto Lift, Inc.’s Customer Service Department.
PRESTO P4 LEVEL LOADER OWNER’S MANUAL 19
Presto Lifts Limited Warranty Policy Presto Lifts warrants all of its products against defects in the welded structural frame and, if applicable, scissor legs from faulty material and workmanship for a period of five (5) years from the date of invoice. A lifetime limited warranty is provided for the Airstroke Actuator in all pneumatic lifts against any defect due to faulty material or workmanship.
