Presto Lifts XZ50-20 Use and Care Manual
Contents
1. de db d s al SNOLLNG iSNOLING N3395 gt Uf 16 un t x OS 9 8 _ 220268 e Page 20 PRESTO OWNER S MANUAL XZ XZT FLOOR LEVEL LIFTS amp TZ FLOOR LEVEL TILTS 131 MOSSIOS 3sn4 A133VS a WNOILLO38IG ic Schemat IC XZT Figure 11 ALSAVS pecie p 100 T Ni 1 NIN T9 10 1 1111 3513 144 5 I 3514 Al34VS H3NIVHAS HH 8431 113 QAW GION3IOS NMOQ 3 17 331133 SNWA MOHD SNIVLNOO A 18A3SSV lt PRESTO OWNER S MANUAL XZ XZT FLOOR LEVEL LIFTS amp TZ FLOOR LEVEL TILTS Page 21 Figure 12 Hydraulic Parts Layout XZ amp TZ 23 14 2 ut gt 227 Page 22 PRESTO OWNER S MANUAL XZ XZT FLOOR LEVEL LIFTS amp TZ FLOOR LEVEL TILTS Figure 13 Replacement Parts XZT QTY Motor 1 Phase Only Baldor PRESTO OWNER S MANUAL XZ XZT FLOOR LEVEL LIFTS amp TZ FLOOR LEVEL TILTS Page 23 Figure 13 Replacement Parts XZT continued DESCRIPTION OF PART OTY Cylinder Seal Kit 3 1 2 Cylinder 2 XZ amp TZ Hydraulic Hose 3 87 AP Le Page 24 PRESTO OWNER S2. I a T 20 AA 4 a CT LIFTS Presto worldwide material handling and ergonomic solutions AZ Floor Level Lifts TZ Floor Level Tilts amp XZT Floor Level Lift amp Tilts Installation Operation and Service Manual Model Number IMPORTANT READ CAREFULLY BEFORE INSTALLING OR OPERATING LIFT Part orders are subject to a 50 minimum charge September 2014 This manual was current at the time of printing To obtain the latest most updated version please contact Presto Lifts Customer Service Department or go to our website www PrestoLifts com you will find a complete list of current owner s manuals to print Page 2 PRESTO OWNER S MANUAL XZ XZT FLOOR LEVEL LIFTS amp TZ FLOOR LEVEL TILTS Presto Lifts Limited Warranty Policy Presto Lifts warrants all of its products against defects in the welded structural frame and if ap plicable scissor legs from faulty material and workmanship for a period of five 5 years from the date of invoice All other components have a limited warranty against defects in faulty material and workmanship for a two 2 year period from the date of invoice date of invoice and 30 day limited warranty on labor Please note that prior authorization from Presto Lifts 18 required on all warranty work There are no implied warranties of any kind more specifically there are no warranties of mer chantability or fit
3. facility All merchandise must arrive Free on Board at Presto Lifts facility or the shipment will be refused and returned to the sender All credits are issued less restocking and refurbishing charges regardless if the merchandise was damaged in transit Return addresses please refer to your RMA for the address to which your product should be returned Presto Lift Inc 715 Highway 77 Manila Arkansas 72442 Telephone 800 343 9322 Fax 888 788 6496 PRESTO OWNER S MANUAL XZ XZT FLOOR LEVEL LIFTS amp TZ FLOOR LEVEL TILTS Page 33 MANY NEEDS REQUIRE MANY OPTIONS Presto Call Presto Sales for stock or customized lift inquiries 800 343 9322 Email sales prestolifts com t 1 1 z H m i 14 i 5 3 m z 3 1 a L 4
4. Hydraulic Oil Specifications If the lift will be used at normal ambient temperatures Presto Lifts supplies the unit with Conoco Super Hydraulic 32 oil This may be replaced by any other good quality oil with 150 SSU at 100 F and rust and oxidation inhibitors and anti wear properties If the lift will be used at ambient temperatures below 0 F use aircraft hydraulic oil Use Type 15 aircraft hydraulic oil The following are equivalent to Conoco Super Hydraulic 32 TYPE MANUFACTURER NUTO H32 EXXON MOBIL AMOCO AW32 CHEVRON AMOCO CO It is very important to keep the hydraulic oil free of dirt dust metal chips water and other contamination Most of the problems with hydraulic systems are caused by contamination in the oil Page 30 PRESTO OWNER S MANUAL XZ XZT FLOOR LEVEL LIFTS amp TZ FLOOR LEVEL TILTS 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 You can find these numbers on the name plate This plate 1s located within the scissors mechanism To order replacement p
5. MANUAL XZ XZT FLOOR LEVEL LIFTS amp TZ FLOOR LEVEL TILTS Figure 14 XZT HPU Mounted on Stand 25 19 PRESTO OWNER S MANUAL XZ XZT FLOOR LEVEL LIFTS amp TZ FLOOR LEVEL TILTS Page 25 Figure 15a XZT Hydraulic Parts Layout Front View 24 3 6 REF FOR TESTING amp INSTALLATION FRONT VIEW Page 26 PRESTO OWNER S MANUAL XZ XZT FLOOR LEVEL LIFTS amp TZ FLOOR LEVEL TILTS Figure 15b XZT Hydraulic Parts Layout Back View Lir 28 20 REF BACK VIEW PRESTO OWNER S MANUAL XZ XZT FLOOR LEVEL LIFTS amp TZ FLOOR LEVEL TILTS Page 27 XZT Hydraulic Parts List 1 2 1 BkElFigCom BkElFigCom 10 BeEIFigSimRif __ 12 El Ctrl Panel 230 460 115ACN12 B _ 13 14 15 6 ElCabe 12 17 HyVlvLogic B 18 19 0 20 10 21 1 22 1 23 HyFtgAdpr 24 25 26 HyVlv __ 27 28 2 29 REF 30 REF 31 El Wiring Diag 208 230 460 XF REF Page 28 PRESTO OWNER S MANUAL XZ XZT FLOOR LEVEL LIFTS amp TZ FLOOR LEVEL TILTS GREEN BUTTONS Figure 16 XZT with Up Down Alarm Pedestal Control DESCRIPTION LK PB W EXTRA CONTACTOR NO NO NC GRN PB W EXTRA CONTACTOR NO NO NC BLK PB NO NC P DOWN ALARM BELL 6 5 SJO BLK CONTROL CORD CONTACTOR I I I I 4 CAPACITOR w 4 9 L ee i PRESTO OWNER S MANUAL XZ XZT FLOOR LEVEL LIFTS amp TZ FLOOR LEVEL TILTS Page 29 Table 1
6. PROCS US u u umu nu uuu Ls 13 CG Societe l l car vertu E Hoe 14 SECTION ndo ee ee eee ee ero ee uu u eee 15 16 ORDERING REPLACEMENT PARTS sess 31 RESTOCKING POLICY amp RMA POLICY esee 32 amp 33 LIST OF FIGURES Chocke Pie lp Figure 1 lO POCO TA Figure 2 d BLA Ti llOO Figure 3 Z WCU POM Figure 4 amp 5 Electrical Schematic 115 Volt AC 1 Phase Figure 6 Electrical Schematic 208 480 Volt AC 3 Phase Figure 7 Hydraulic CCU AUG u uuu uuu Figure Electrica coe Hemauc Figure 9 Electrical Schematic XLT 208 48 3 phase Figure 10 Horae Pns EO ON E u ua teres Figure 11 Hydraulic Schematic XL Figure 12 Replacement Figure 13 XZT HPU mounted on stand uuu uu uuu Figure 14 lui i Pars L AOL uu uuu Figure 15a amp 15b XLT with Up Down Alarm Pedestal Control Figure 16 Page 4 PRESTO OWNER S MANUAL XZ XZT FLOOR LEVEL LIFTS amp TZ FLOOR LEVEL TILTS ECTION 1 INTRODUCTION The Presto XZ and TZ Series Lift models are designed for lifting and or tilting
7. to the electrical and hy draulic components of the remote power pack Check the hydraulic hoses going to the lift and the hydraulic components on the lift 2 Check all connections for tightness Check for vis ible hydraulic fluid around all components of the lift and power pack or on the floor nearby 3 Check base frames for flatness and for bent or dam aged metal parts 4 Inspect the lifting eyes making sure they are com pletely threaded into the nuts provided on the lift and the locking nut is secured B INSTALLING Make sure that the electrical system is wired correctly and that there is full compliance with the local electri cal codes and ordinances WARNING These lifts require bolting to the floor before op eration 1 Floor Installation a Make sure that the floor in the installation area is flat stable relatively smooth and free from dirt obstacles or surface defects b Place the lift in the exact operating position using a sling attached to all four lifting eyes 3 r When moving the lift never ever attempt to pick it up by the corners or the base The lift should be picked up only by the lifting eyes The use of a spreader strap sling is suggested Be sure that the eye bolts are secured in place with locking nuts prior to lifting c Make sure that the complete base of the lift is in contact with the floor In order to provide com plete contact with the floor the base may be shimmed or
8. L All products shipped from our factory have passed Quality Assurance inspection and testing The carrier of choice has signed for and accepted the product in new working condition The customer should inspect to ensure it is not received damaged has no concealed damage or is not incomplete Parts orders are determined to be complete based upon Presto Lift Inc inspection sheets and carrier shipping weights Page 32 PRESTO OWNER S MANUAL XZ XZT FLOOR LEVEL LIFTS amp TZ FLOOR LEVEL TILTS RETURN MATERIALS AUTHORIZATION POLICY Presto Lifts provides the Return Materials Authorization RMA Policy for specific models as a courtesy to our distributors in the event they do not receive what they ordered If a customer wishes to return a Presto Lifts product please contact the Customer Service Department and request an RMA number This request must be made on or before the fifteenth calendar day following the date of Presto Lifts invoice for the merchandise Not all units are returnable Quantity orders and special designs cannot be returned under any circumstances Presto Customer Service reserves the right for final judgment on all product returns The RMA number must appear on the outside of any packaging material for a return to be accepted and processed by Presto Lifts Customers shipping returns from the Continental US Canada or Mexico have thirty 30 days from date of RMA issue to have the product arrive at Presto Lifts
9. LIFTS amp TZ FLOOR LEVEL TILTS Page 17 ic Schemat IC Hydrauli Figure 8 1 LNVANVOSILNVY 92 YVAMILNY HILIM SHOLIBIHNI NOILVOIXO 7 15018 SVH 9 30 89 OSI onnvsgAH WOINSYd AINO ASN YAGNIMAD 2 HIOAH3S3MH YANIVYLS 331113 3sn3 mt 3503 A133VS A134VS L e e ee e lt l wa To x 7122 NMOQ 33733 IO r o T I 3AVA esum t l i i JAVA 10431NOO JAVA QION310S NMOG 43133 3AVA MOH SNIVLNOD A18W3SSV dNNd Page 18 PRESTO OWNER S MANUAL XZ XZT FLOOR LEVEL LIFTS amp TZ FLOOR LEVEL TILTS Electrical Schematic 115 Volt AC 1 Phase Figure 9 1 5 011048 HSAd Q3LNNOW 1 15303 QION310S NMOQ i x p ciem 71 E x i I I i m I 1 5 49v 18 L1 x x AlddnSs Y4IMOd 3LIHM 21 1 N3389 YOLOWLNOOD PRESTO OWNER S MANUAL XZ XZT FLOOR LEVEL LIFTS amp TZ FLOOR LEVEL TILTS Page 19 318 1 SNOHO3NNOO gum 51081 W1S303d 1 lt lt GION310S 6 de GP
10. LLERS ON XZ LIFT 14 Assemble ram nut to piston ram and torque to 100 ft lb 1 Raise the lift Chock lift with safety chocks pro vided and secure per Section 5B 15 Lubricate piston and seals and install cylinder 2 Disconnect the electrical power 3 Replace one roller at a time by removing retainer 16 Insert retainer ring clips shields and roller Clean and do not lubricate axle Replace with new rollers shields and clips 17 Install cylinder and hydraulic lines 4 Raise lift and remove chocks Cycle lift 2 3 times and check shields and clips prior to returning to ser 18 Fill reservoir vice 19 Cycle lift up and down a few inches remove FIGURE 4 XZ Pinch Points UP Figure 5 XZ Pinch Points DOWN Page 16 PRESTO OWNER S MANUAL XZ XZT FLOOR LEVEL LIFTS amp TZ FLOOR LEVEL TILTS Figure 6 Electrical Schematic 115 Volt AC 1 Phase XZ amp TZ JUNCTION BOX MOTOR ANO CAPACITOR GREEN TO POWER 2 WHITE SUPPLY 115V AC 8 4 4 L1 BLACK DOWN SOLENOIO 4 Ti 75 15 TZ T4 C W ROTATION t t2 JOIN Tt T 8 T 9 C W ROTATION 208 240 HI H2 H3 H4 CONTACTOR CONTROL TRANSFORMER Jd C W ROTATION 430 FOOT OR PENCANT SWITCH PRESTO OWNER S MANUAL XZ XZT FLOOR LEVEL
11. Page 10 PRESTO OWNER S MANUAL XZ XZT FLOOR LEVEL LIFTS amp TZ FLOOR LEVEL TILTS 3 Wiring schematics for motors See Figure 8 for 115 Volts 1 PH See Figure 9 for 208 480 Volts 3 PH Do not tamper with or remove the cover for the electrical junction box Only authorized quali fied personnel are allowed to service the electrical system Failure to make electrical connections according to nameplate ratings and wiring diagrams may lead to pump and motor failure The 3 phase motor direction is most critical The pumps can not be run backwards or in reverse for more than three 3 seconds If lift does not rise immediately STOP Inspect connections for correct wiring and polarity D HYDRAULICS 1 Before using the lift check the hydraulic oil level and add oil if necessary Check fittings for tightness Remove the solid plug on the reservoir and replace it with the vented plug provided If the vented plug is not installed you may damage the pump Note If the vented plug is not available remove the solid plug and drill a 1 8 diameter hole through the center of the plug Replace the plug 2 Use hydraulic oil only for the lift The lift has been supplied with Conoco Super Hydraulic 32 Use only the recommended oils lifted in the hydraulic schemat ic located in the rear of this manual in Figure 10 Do not use automotive hydraulic brake or trans mission fluids They will destroy the pump and cylinder seals They p
12. alified personnel c Oil viscosity is too heavy Replace who have read and understand all of the information provided in the Operating Installation and Mainte 3 Lift raises then slowly lowers without power Leaking hydraulic lines or fittings Check for tell tale oil spots 2 nance sections of this manual LIFT WILL NOT MOVE b Pump check valve in pump may be inoperative 1 Lift will not raise or tilt Pump must be replaced a Check the power switch fuses overloads and breaker Lift will not lower when energized b Check the voltage at motor motor may have failed Down solenoid faulty Check voltage may be low or wrong voltage for coil or coil may be wrong 2 Operational noises erratic or noisy performance voltage for secondary voltage a Lift may be overloaded or jammed Check load weights and obstructions see nameplate for b Check continuity of coil Could be burned out capapcity b Motor 3 phase single phasing Check voltage at motor terminals c Motor 3 phase reversed d Motor 1 phase low voltage Check voltage at motor terminal e Oil shortage Reservoir low or oil line failure Repair or replace f Down valve open check wiring for damage Remove and replace if necessary Page 14 PRESTO OWNER S MANUAL XZ XZT FLOOR LEVEL LIFTS amp TZ FLOOR LEVEL TILTS SECTION 6 SERVICE A ORDERING REPLACEMENT PARTS 1 Standard replacement parts for each lift are prov
13. and positioning a wide variety of loads Each lift is provided with an entrance ramp allowing easy access to the lift and also acts as a safety toe bar for the operator during the lowering cycle The XZ and TZ Series Lifts are designed for indoor non hazardous location use This manual provides information necessary for the safe and proper installation operation and maintenance of these lifts It is important that this manual be read by all personnel involved with the installation maintenance or operation of the scissor lift Where unique situations arise which are not covered in this manual contact Presto Lifts Inc for further instructions Additional manuals are available upon request The floor level lifts have a nameplate that provides the load capacity ratings serial number and model identifi cation Please refer to these numbers when ordering parts or requesting further information Hazard or unsafe practice possibly resulting in personal injury or property damage PRESTO OWNER S MANUAL XZ XZT FLOOR LEVEL LIFTS amp TZ FLOOR LEVEL TILTS Page 5 Responsibility of Owners and Users Inspection and Maintenance The device shall be inspected and maintained in proper working order in accordance with Presto s owner s manual Removal from Service Any device not in safe operating condition such as but not limited to excessive leakage missing rollers pins or fasteners any bent or cracked structural members cut or fra
14. arts please call the Presto Parts Department Parts are shipped subject to the following terms FOB factory Returns only with the approval of our parts department Credit cards preferred except parts covered by warranty Freight collect for truck except parts covered by warranty Freight prepaid and invoice for small parcel shipments except parts covered by warranty Parts replaced under warranty are on a charge credit basis We will invoice you when we ship the replacement part then credit you when you return the worn or damaged part and we verify that it is covered by our warranty Labor is not covered under warranty for Parts orders Presto Parts Department 50 Commerce Way Norton MA 02766 Telephone 800 343 9322 FAX 888 788 6496 Email service PrestoLifts com www PrestoLifts com PRESTO OWNER S MANUAL XZ XZT FLOOR LEVEL LIFTS amp TZ FLOOR LEVEL TILTS Page 31 PARTS Standard parts may be returned with a 20 restocking fee Modified or custom engineered parts are not returnable Unfortunately due to potentially concealed damage all sales of electrical assemblies are final QUALITY ISSUES Should you feel there is a quality problem please contact the seller to ask questions and gather information on how to rectify the issue Presto Lift Inc reserves the right to determine potential credits as a result of factory defects based on its inspection of the merchandise GENERA
15. d capable of causing serious injury or damage if adequate precautions are not taken DO NOT INSTALL OR OPERATE THESE LIFTS WITHOUT CAREFULLY READING THIS MANU AL Presto Lifts Inc has identified certain hazards which may occur during the installation maintenance and use of these lifts The TZ Lifts are serviced or repaired in the collapsed position The XZ lifts are serviced in a raised posi tion supported by safety devices When the maintenance is performed properly according to Sections 5 and 6 it will greatly reduce the possibility of injury Both the XZ and TZ lifts have hydraulic safety fuses attached to each cylinder These will prevent the lifts from lowering in the event of a catastrophic hydraulic pump or line failure NO d3 Immediate hazard that will result in severe personal injury or death Hazard or unsafe practice that could result in severe personal injury or death CAUTION hazard or unsafe practice that could result in minor personal injury or property damage In the interest of safety please read the entire manual carefully You must understand the ma terial in this manual before you install use or service the unit If you have any question about any of the instructions in this manual please contact Presto Lifts Inc at 1 800 343 9322 PRESTO OWNER S MANUAL XZ XZT FLOOR LEVEL LIFTS amp TZ FLOOR LEVEL TILTS Page 7 Do not perform any repair work on a lift in a fully extended po
16. erate the lift a To raise the lift press and hold the up switch b To lower the lift press the down switch c Release the switch to stop the lift in either direc tion 4 Wait until the lift has come to a complete stop before loading or unloading 5 All people and unrelated objects must stand clear of the lift when operating in order to avoid personal injury or property damage a Do not load or unload a moving lift b Stop immediately if the lift fails to move or exhibits strange movements or sound Do not con tinue to operate the lift until it has been checked and repaired c When operating the lift stand clear of the scis sor legs and the platform d Obey all warning labels e Do not stand near the tilting side when tilting containers with loose parts Parts may fall out of the container and could harm the operator Page 12 PRESTO OWNER S MANUAL XZ XZT FLOOR LEVEL LIFTS amp TZ FLOOR LEVEL TILTS SECTIONS MAINTENANCE Generally the XZ and TZ Series Lifts will require little maintenance However routine maintenance and inspection will minimize cost of repairs and hazardous conditions A DANGER Before servicing the lifts read and understand this complete manual Never put any part of your body under the lift or service the lift with a load on the platform If possible service the lift in a down position A ROUTINE MAINTENANCE All routine maintenance should be performed mont
17. fety messages that follow this symbol to avoid possible injury or death For use with DANGER signal word Red Background For use with WARNING signal word Orange Background For use with CAUTION signal word Yellow Background Signal Words The meaning of different signal words as defined by ANSI Standard Z535 4 indicates the relative seriousness of the hazardous situation DANGER indicates a hazardous situation which if not avoided A D A G F R will result in death or serious injury Red Background WARNING indicates a hazardous situation which if not avoided could result in death or serious injury Orange Background Yellow Background CAUTION used with the safety alert symbol indicates a haz ardous situation which if not avoided could result in minor or moderate injury NOTICE 18 used to address practices not related to personal NOTICE EZ Blue Background SAFETY SAFETY INSTRUCTIONS or equivalent signs indicate safety INSTRUCTIONS related instructions or procedures Green Background PRESTO OWNER S MANUAL XZ XZT FLOOR LEVEL LIFTS amp TZ FLOOR LEVEL TILTS Page 9 SECTION 3 INSTALLATION A INSPECTION Inspect the lift completely to determine if there is any damage that occurred during shipment and that the lift is complete Do not use the lift if there appears to be any damage Check the following with the lift in the collapsed position 1 Check for signs of damage
18. grouted Do not spot shim The complete base must be in contact with the floor Shim to have continuous contact of base and floor d The lift is provided with lag plates or brackets Place the lift in the exact operating position be fore spotting or drilling holes for the bolts Bolt the lift securely using at least four 4 large bolts with a minimum of 2 000 Ib Pull out strength per bolt e All XZ and TZ lifts have a remote power pack that is hydraulically connected to the lift at the factory Be sure all hydraulic reconnections are made according to the information contained in Section 3 paragraph D3 f Electrical connections must be made according to the electrical schematics and information con tained in Section 3C and in compliance with local codes and ordinances C ELECTRICALS 1 The motors on the XZ and TZ power pack are in termittent duty motors with high pull up torque CAUTION All wiring must conform to local code and must be performed by licensed electricians The standard AC single phase motor requires a 120 volt 20 amp fused outlet do not remove or replace the plug or cord set provided Do not use an extension cord 2 The following chart recommends the power source for various motors supplied with the XZ and TZ lifts AC Motor Size Fuse Breaker 1 120 Volt 1 PH 20 AMP 20 AMP I HP 240 Volt 1 PH 15 AMP 15 AMP 1 1 2 HP 208 240 Volt 3 PH 15 AMP 10 AMP 1 2 HP 460 Volt 3 PH 7 1 2 AMP 5 AMP
19. hly and can be performed monthly and can be performed in a lowered position Before performing any maintenance shut the power off and disconnect switches using lockout tagout procedures Perform the routine listed checks in la 1g Safety Chocks and or safety pins must be installed on the lift while maintenance is being performed on the lift if it is in a partially raised position Follow chocking procedures in Section 5B These chocks and or pins are provided and are atta ched to the lift Contact Presto Lifts Inc for the recommended parts if yellow safety chocks are not available 1 Inspect the following a Check the reservoir oil level and add correct oil according to Figure 10 if necessary b Check the rollers for sign of wear Replace if damaged c Check snap ring and shield on rollers Replace if damaged d Check hydraulic lines for damage or leaking Replace if damaged e Check for oil spots on the floor Trace the leak to the proper fitting and tighten or replace f Check wiring for damage Replace immediately if any signs of wear are evident PRESTO OWNER S MANUAL XZ XZT FLOOR LEVEL LIFTS amp TZ FLOOR LEVEL TILTS Page 13 g Bearings on all lifts are permanently lubricated and require no servicing Do not oil these bearings B CHOCKING PROCEDURES 1 Raise the lift to its maximum height NOTE XZ Prior to 2005 FIGURE 1 Chocking Procedures XZ 2 Using only the chock assembly provided
20. id ed by part number and lift models see Figure 6 2 All key parts are identified and must be replaced with original equipment components 3 The warranty 18 void where original equipment components are not used 4 Be sure to have the serial number and the model number of the lift available when you are requesting replacement parts B REPLACING CYLINDER SEALS 1 Raise the lift Chock the lift with safety chocks provided and secure per Section 5B 2 Disconnect the electrical power FIGURE 3 TZ Pinch Points 3 Disconnect the hydraulic hose from the cylinder and cap the line to prevent hydraulic fluid loss 4 Remove the cylinder pin by loosening the set screws holding the pin Remove the bolt holding the cylinder base 5 Lift the cylinder out of the lift Hold the cylinder securely when removing the pins to prevent it from falling to the floor and being damaged 6 Clamp cylinder securely at the base end 7 Completely collapse cylinder piston 8 Push gland into the cylinder 1 8 3 16 9 Remove retainer ring 10 Remove piston ram piston and gland from cylin der 11 Remove ram nut piston and gland PINCH POINTS PRESTO OWNER S MANUAL XZ XZT FLOOR LEVEL LIFTS amp TZ FLOOR LEVEL TILTS Page 15 chocks cycle lift 2 3 times and recheck oil reservoir 12 Remove and replace seals and wipers for oil level 13 Assemble piston and gland to piston ram C REPLACING LEG RO
21. ness for any particular purpose Presto Lifts sole warranty shall be as set forth in this limited warranty Presto Lifts will elect to repair or replace a defective component without charge if any compo nents should become defective within the limited warranty period Proof of purchase is required for warranty The charge for shipping the defective component is the responsibility of the buyer and must be accompanied with an RMA number The shipping charge to return the component to the buyer is the responsibility of Presto Lifts Inc This limited warranty does not cover labor expense for removal or reinstallation of components after thirty days This limited warranty shall not cover among other things damages resulting from foreign matter or water failure to provide reasonable and necessary maintenance and if ap plicable use of product while charger is plugged into an AC outlet or failure to follow operating instructions The limited warranty is not valid for damage resulting from negligence accident unreasonable use abuse or misuse exceeding data plate capacities or altering the product without Presto Lifts authorization Presto Lifts expressly disclaims and excludes any liability for consequential incidental indirect or punitive damages or financial loss to people or property resulting from any breach of warranty or the operation or failure of this product Presto Lifts makes no representation that this product complies with local
22. ose a serious fire hazard 3 External power pack units are shipped connected If disconnection 15 required during installations the lines must be blown out and bled prior to being reconnected The XZ and TZ lifts are designed for normal fac tory environments Where below freezing temper atures sometimes exist special oils must be used Contact Presto Lifts Inc for information and recommendations when freezing conditions exist E TESTING THE LIFT WITH NO LOAD 1 Before testing the lift clear the area of any loose material Be sure the lift has no obstructions above it or on any side Briefly operate the lift for 2 5 sec onds If the lift begins to rise with a humming sound and functions properly continue to the full upright position If the lift does not rise immediately or there is any operational problem stop it Before continuing check the rotatin of the motor and the voltage at motor terminals Again briefly operate the lift If the lift does not move smoothly with the humming sound stop and review the procedures in Section 5 Troubleshooting Maintenance ECTION 4 OPERATION A METHOD OF OPERATION All XZ and TZ lifts are provided with a relief valve and are factory preset to the maximum safe load ca pacity of the lift Activating and holding the upswitch will energize the motor The motor is attached to a positive displacement pump which draws hydraulic fluid from the reservoir and tran
23. place the square tubing in the wheel tray sideways and adjacent to the welded long lifting eye nut 3 Insert the pin which is secured to the lift through the holes provided in the wheel tray Be sure the pin enters both holes and through the center of the tubing 4 Lower the lift until the wheels come in contact with the chock and hold the down button for another 2 seconds 5 Perform routine maintenance according to Section 5A 6 Raise lift remove and replace chock to its straight position 95 Motor overheats a Excessive cycle rates 15 cycles per hour max Check actual time in use Low voltage Check voltage at motors Oil starvation Check filter In reservoir LIFT OPERATING SLOWLY 1 Up cycle a Oil starvation Check filter in reservoir Check for pinched hydraulic lines b Oil viscosity Oil is too heavy or too thin FIGURE 2 Chocking Procedures TZ 1 Raise the empty lift to its maximum height c Air in cylinder Cycle lift with no load 2 or 3 times and depress the up switch for 5 seconds 2 Using only the safety chock pin provided insert the after reaching maximum height on each cycle pin in the hole in the pivot block 2 Down Cycle 3 Be sure the pin extends through the block 1 2 a Down solenoid valve filter dirty Remove and beyond the pivot block clean C TROUBLESHOOTING MAINTENANCE b Check oil condition Replace if dirty All servicing should be done by qu
24. sfers it under pres sure to the cylinders This forces the ram forward and raises or tilts the platform Releasing the up switch will stop the lift A check valve built into the pump holds the lift in position Depressing and holding the down switch of the switch will energize a solenoid which allows the oil from the cylinder to return to the reservoir through a pressure flow control valve and the pump This allows the lift to lower smoothly and at a controlled factory preset speed PRESTO OWNER S MANUAL XZ XZT FLOOR LEVEL LIFTS amp TZ FLOOR LEVEL TILTS Page 11 Do not maintain the switches energized if the lift does not move or has reached its up or down lim its This may cause damage to the motor pump and controls B OPERATION PROCEDURES In order to operate the lift follow these operating procedures 1 Read and understand all the instructions before operating If the lift has modifications or accessories read and understand their functions Review Section 3E and Pinch Points figures 3 or 4 and 5 2 Load the lift correctly a Do not exceed the maximum rated load capacity The load capacity is marked on the data place on the left b Place the load in the center and at the very back of the platform c If the load is unstable or may become unstable fasten it into position d Use additional precautions when tilting a load of loose parts of the TZ lift Excessive tilting can cause parts to roll out 3 Op
25. sition All personnel must stand clear of the lift when the lift is in motion Do not put hands or feet under lift Do not work under lift without securing it first with proper maintenance devices Do not stand sit or climb on the lift at any time Do not use the lift on soft uneven or unstable surfaces Do not exceed the load capacity rating on the data plate Do not place a load on a moving lift Place a load in the center of the lift and be sure that the load is secured properly Page 8 PRESTO OWNER S MANUAL XZ XZT FLOOR LEVEL LIFTS amp TZ FLOOR LEVEL TILTS SAFETY ALERT SYMBOLS AND SIGNAL WORDS The safety of all persons operating maintaining repairing or in the vicinity of this equipment is of paramount concern This is a powerful machine with moving parts and is capable of causing personal injury if proper precautions are not taken Therefore throughout this manual certain hazards have been identified which may occur 1 the use of the machine and there are appropriate instructions or precautions which should be taken to avoid these hazards In some cases there are consequences which may occur if instructions or precautions are not followed Below are the symbols and signal words along with their definitions referenced from ANSI 2535 4 Product Safety Signs and Labels Safety Alert Symbols These are the safety alert symbols They are used to alert you to potential physical injury haz ards Obey all sa
26. state or federal safety product standards codes Should this product fail to comply in any way with those codes it shall not be considered a defect of materials or workmanship Presto Lifts shall not be held liable for any damages resulting from noncompliance It is the dealer s responsibility to exercise this limited warranty This limited warranty 15 provided to the original purchaser defined as the original end user and is nontransferable This constitutes the complete and final agreement involving Presto Lifts and limited warranty obligations for products PRESTO OWNER S MANUAL XZ XZT FLOOR LEVEL LIFTS amp TZ FLOOR LEVEL TILTS Page 3 CONTENTS WARRONT ____________ SECTION 1 9 Responsibility of Owners and Users 6 SEGTION2 1120 uuu SSDS eR e Es 7 Safety Alert Symbols and Signal Words 9 SECTION 3 Installat ua _____ __ 10 10 12 28 MENS Su sS 10 C PI u ERR 10 EE 11 SECTION ______ 11 SECTION 585 015111 uuu EU uns 13 A Routine Inspection and Maintenance 13 D C lO Ti
27. yed electric hydraulic or pneumatic lines damaged or malfunctioning controls or safety devices etc shall be removed from service until it is repaired to the original manufacturer s standards Repairs All repairs shall be made by qualified personnel in conformance with Presto s instructions Operators Only trained personnel and authorized personnel shall be permitted to operate PowerStak Before Operation Before using the device the operator shall have e Read and or had explained and understood the manufacturer s operating instructions and safety rules Inspected the device for proper operation and condition Any suspect item shall be carefully ex amined and a determination made by a qualified person as to whether it constitutes a hazard All items not in conformance with Presto s specification shall be corrected before further use of the PowerStak During Operation The device shall only be used in accordance with this owner s manual Do not overload Ensure that all safety devices are operational and in place Modifications or Alterations Modifications or alterations to any Presto industrial positioning equipment shall be made only with written permission from Presto Page 6 PRESTO OWNER S MANUAL XZ XZT FLOOR LEVEL LIFTS amp TZ FLOOR LEVEL TILTS SECTION 2 SAFETY The XZ and TZ Series lifts are very powerful lifts capable of doing large amounts of work They are hy draulically actuated an
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