Hold Tite SC Manual 4111-0017 Nov 2009:Phold SC Manual.qxd.qxd
Contents
1. Failure to follow posted instructions will result in death or serious injury Call 262 255 1610 for replacement placards warming labels or owner users manuals decal placed in same position on both sides 1751 0329 x2 decal placed in same position on both sides 1751 0330 x2 decal placed in same position on both sides ADANGER CRUSH HAZARD 1 75 1 0 1 3 8 DO NOT REMOVE hydraulic cylinder until leveler is safely supported by maintenance prop Refer to owner s user s manual for proper maintenance procedure Failure to comply will result in death or serious injury 1751 0729 ADANGER CRUSH HAZARD Do not work under dock leveler unless this maintenance prop has been secured in the upright position See owner s user s manual for proper procedures Failure to comply will result in death or serious injury 1751 0729 44 DANGER CRUSH HAZARD Open the pin latch and insert through the maintenance 1 5 1 0 3 1 prop housing and prop completely Close the pin latch to secure prop Use every time dock leveler is serviced Failure to comply will result in death or serious injury 1751 0731 4 DANGER CRUSH HAZARD DO NOT ENTER PIT unless dock leveler is 1 75 1 072 6 safely supported by maintenance prop Place barriers on driveway and dock floor to indicate service work being performed Refer to owner s user s manual for proper maintenance procedures Failure to comply will result in death or serious2. gt gt gt E d id lt d 5 A A 4 A A gt gt E P y Pa gt ES gt 2 p 7 A Pa A p e P gt gt gt de gt E gt gt 4 E 7 lt lt a a a r i ae ta gt e di e Z PS e a ye nj a of s A di a gt ra ra xe E we pe 7 pe eS pos 2 gt 2 gt A E yee Pg a A e p r a e r i A r gt A gt A 7 gt e gt y p ys p gt gt 4 A gt A yi A A a Pri A we A ye gt seri a gt dd 5 K a a a 7 a p gt gt gt gt A a 7 a gt si A a Pa A A e A A gt gt gf 2 g a a pe eo pe a F A ys A pe gt pe y gt a gi dl oe we e a we 7 Pa pe A gt ff gt a gt gt gt p gi Pa gi A Be gt we A 5 P A gt A A A A e A A 4 E f Ss SS we 3 yf Se W S ie ff Sa J J 7 ue a SS gt gt ff yf S J a Ss if 5 N E g j SS a Fig S Jf S A a N ff ane S Ar S S Ta 5 y S 2 a SS Ze af Su E y Se Y Si Fi N Sy S SE aa o a ff See S A S N ri Pi i p a L of f g Prox Switch PRS 2 INPUT 4 1 16 min 1 8 max Prox Switch PRS 1 INPUT 3 The Operating range is not adjustable on a IMPORTANT Make sure that the wire from the prox Hold Tite restraint switches are clear of all moving parts Proximity switch Adjustment and replacement A Locate and remove four screws and cover on front of Hold Tite assembly B Adjust PRS 1 With the Z bar rotated directly over the prox switch
3. Provide dock leveler and or Hold Tite serial number when calling or faxing orders 38 4111 0017 Nov 2006 June 2009 Hold Tite Break Down PARTS Item Quantity Part Number Description A 1 9414 0064 Restraint Shoe B 1 9412 0030 Pin 1 1 2 X 8 LG C 1 9414 0021 Rack Weldment D 1 9411 0005 Spring Rack Weldment 1 8583 0017 Valve Block SC 8583 0016 Valve Block with leveler F 1 9414 0065 Latch Block Assembly Includes Prox Switches G 1 2101 0118 Bolt 3 4 10 UNC X 1 1 2 LG H 1 2101 0119 Bushing 1 9414 0073 Cylinder Complete Includes Slide Block and Hoses J 1 9904 0059 Hose 35 Lg 6 Jic Swivel Both Ends K 1 9904 0155 Hose 21 Lg 6 Jic Swivel Both Ends L 1 9412 0095 Push Rod M 1 2101 0045 Cotter Pin 1 8 x 1 00 N 2 9412 0063 Removable Track Stop O 4 2101 0009 Bolt 5 16 18 P 1 9411 0046 Access Cover Top Q 14 2101 0099 Screw 1 4 20 UNC x 3 8 R 1 9411 0012 Cover Front S 1 9411 0007 Weather Seal Hold Down T 1 0192 0016 Weather Seal Ratchet U 1 2753 0001 J Box Cover and Gasket SC includes screws 2753 0002 J Box Cover and Gasket Remote includes screws V 4 2101 0074 Screw Allen Head 1 2 20 UNC x 1 1 2 Lg W 1 9414 0063 Base Weldment X 1 8581 0137 One Way Check Valve 4111 0017 Nov 2006 June 2009 39 PARTS Hold Tite SC Power Pac B item Quan
4. Turn power off for 10 seconds repeat cycle 3 times Insert program chip program specific Repeat steps 1 3 and 4 Allow light sequence to complete flashing Run light should be on STEADY not flashing Error light should NOT be on Check for proper input and out put lights on the PLC If not repeat steps 3 and 4 until PLC responds properly If the PLC does not accept the program or if questions contact the Technical Service Department Note The PLC will maintain the program even if the power is turned off 34 Prom Location Twido PLC E Prom 4111 0017 Nov 2006 June 2009 MANUAL RELEASE Shoe Front Cover Slide Block Tools required Large Hammer 3 4 Dia Rod Two Foot Lg Manual release Lock out tag out leveler Remove front cover plate 4 screws Remove bolt and washer holding cylinder in place Install 3 4 rod through front opening Rod will fit in the slide block Hammer 3 4 rod 4 to 5 hits until the slide block travels past the shoe The shoe will then drop 4111 0017 Nov 2006 35 June 2009 PARTS Hold Tite Valve Block SC gt NOTE DESCRIPTION PRESSURE FROM PUMP RETURN TO TANK 3 TO BLIND END OF Hold Tite CYLINDER 4 TO ROD END OF Hold Tite CYLINDER item Quantity Part Number Description A 1 Hydraulic Valve Body B 2
5. or reset breaker 1 phase new models energize Determine cause of device tripping NOTE If replacing fuse use fuse with equal specification Motor starter 3 phase or Check controller output that sends a signal to starter motor relay 1 phase not or relay Output may have failed OPEN Use meter energizing Combination to check for contact closure when output ON Leveler and P Hold Only 4111 0017 Nov 2006 2 June 2009 TROUBLE SHOOTING HOLD TITE Three phase units only 3 Phase units only no Check for blown fuses at branch circuit disconnect Restraint does not voltage is present on one Replace fuse Determine cause of blown fuse i ine operate Motor energizes line Check motor starter as follows but does not run 1 Di EWI e NOTE A motor that is Disconnect wires at load side of starter 2 Energize the starter 3 Measure line to line voltage at line side of starter 4 Measure line to line voltage at load side of starter Combmatonmkeveler Line side and load side voltages should be approximately the same Replace starter if and Hold Tite Only voltage values are considerably different from one another Check all wiring to motor for high resistance or no connection Replace motor If motor hums but does missing voltage on one line not run overload device s said to be single phased should trip Three phase units only Phase reversed Reverse any two legs at the branch circ
6. serious personal injury or death 4111 0017 Nov 2006 June 2009 Dock Leveler and Truck restraint Interlock The dock leveler can be interlocked with the truck restraint so that the leveler cannot be operated until the restraint has engaged the truck trailer RIG Rear Impact Guard when the OPERATION switch is in NORMAL and has NOT been switched to BYPASS The truck restraint is interlocked with the dock leveler so that the restraint cannot be operated until the leveler is stored in the cross traffic position lip fully folded inside the keepers and the platform level with the dock floor Leveler and restraint interlocking are overridden when the OPERATION switch is in BYPASS The allows the independent operation of the leveler the restraint cannot be operated in BYPASS Pressing the restraint ENGAGE button when in BYPASS mode will return the leveler to NORMAL operating mode This option is not available on units equipped with the Auto Return to Dock option 23 OPTIONAL EQUIPMENT ADJUSTMENTS Adjust amp Test Dock Leveler and Truck Restraint Interlock Adjust Auto Return To Dock ARTD When service under the dock leveler is required always lock all electrical disconnects in the OFF position after raising the platform and engaging the maintenance prop Failure to do this may result in C serious personal injury or death Always post safety warnings and barricade the work area at dock level and ground le
7. 2006 June 2009 MAINTENANCE Service Dock Leveler Restraint Safely A Tagout Device B Lockout Device C Lockout Device D Tagout Device E Maintenance Prop F Header Plate Always post safety warnings and barricade the work area at dock level and ground level to prevent When service under the dock leveler is required always lock all electrical disconnects in the OFF position after raising the platform and engaging the maintenance prop Failure to do this may result in serious personal injury or death unauthorized use of the dock leveler before maintenance is complete Failure to do this may result in serious personal injury or death Whenever maintenance is to be performed under the dock leveler platform support the platform with maintenance prop E Position the maintenance prop behind front header plate F while staying clear of the lip The lip will fold down after the platform has rested on the maintenance prop Lock the maintenance prop in the service upright position using an OSHA approved lockout device C and tagout device D Always stand clear of the dock leveler lip when working in front of the dock leveler The maintenance prop MUST be in the service position when working under the dock leveler For maximum protection use an OSHA approved locking device to lock the maintenance prop in the service position Only the person servicing the equipment should have the key to unlock the maintenan
8. 204 PB2 ACTIVATES RESTRAINT S1 OPERATION SMTCH NORMAL BYPASS 205 KS1 OPEN IN NORMAL CLOSED IN BYPASS l l PRSI INDICATES RESTRAINT 206 NOT FULLY RAISED WHEN OPEN FULLY RAISED WHEN 207 CLOSED 1 Prox Switch oes PRS ROLES BESTAN See Page el OPEN ENGAGED ON ICC BAR WHEN 209 CLOSED 2 Prox Switch DOOR OPEN CONTACT IF USED See Pa 27 20 OPERATING ZONE WHEN OPEN ge NOT IN LEVELER OPERATING ZONE WHEN CLOSED 2104 l 21 PB3 RAISES LEVELER l i LS OPTIONAL LANYARD 212 PULL RING RAISES LEVELER l l PRS3 OPTIONAL LS INTERLOCKING 213 INDICATES LEVELER LIP FULLY FOLDED WHEN CLOSED NOT FULLY 214 FOLDED WHEN OPEN l l 215 l l 216 217 l l 218 SPARE INPUTS 219 l l 220 OPTIONAL AUTO RETURN TO DOCK OPTIONAL ssi AUTO RETURN TO DOCK OFF ON PRS3 OPTIONAL AUTO RETURN INDICATES LEVELER LIP NOT AT FULL BELOW DOCK POSITION WHEN OPEN AT FULL BELOW DOCK POSITION WHEN CLOSED 4111 0017 Nov 2006 33 June 2009 PROGRAMMING ISSUES FOR PROGRAMMING Error light is flashing PLC is either missing or damaged Update to newer program Installation of new un programmed PLC MATERIAL REQUIRED You will receive two 2 E proms Blank run E Prom Program Specific E Prom INSTALLATION 1 Turn power off power remove existing E Prom if present 2 Insert new Blank Run E Prom 3 Turn power on for 30 seconds 4
9. 9571 0007 Fitting Pipe Plug 1 8 NPT C 2 9301 0109 Fitting Conn STR Thread D 2 8581 0113 Fitting Eloow 90 Deg 6 ORB x 6 JIC E 1 8581 0115 Valve Cartridge Relief F 1 8581 0011 Valve Cartridge 4 Way G 1 8581 0004 Coil Delta H 1 4305 0319 Cable Assembly 22 Lg 1 8583 0017 Complete Valve Assembly Provide dock leveler and or Hold Tite serial number when calling or faxing orders 36 4111 0017 Nov 2006 June 2009 PARTS Hold Tite Valve Block E Tf w No Coil must be energized to raise restraint De energized to lower the restraint gu E A ce 7 Y isa JESCRIPTION PRESSURE FROM PUM RETURN TQ TANK O BLIND END OF Hold Tite CYLINDER O ROD END Of Hold Tite CYLINDER U K Zz E lts eg ee T Item Quantity Part Number Description A 1 Valve Manifold B 2 9301 0109 Fitting Connection STR 6 ORB TO 36 JIC C 2 9301 0113 Fitting Elbow 90 Deg STR Thread 6 ORB x 6 JIC D 1 8581 0011 Valve Cartridge 4 Way E 1 8581 0004 Coil Delta F 1 4305 0319 Cable Assembly 22 Lg G 1 8583 0016 Complete Valve assembly 4111 0017 Nov 2006 37 June 2009 PARTS
10. POWERPAC 115 VAC BUMPERS 10 RETURN LINE FROM PIT PRESSURE LINE TO PIT 24 VOC CONTROL CIRCUIT R ee 10 HOLD TITE L For comprehensive installation instructions of the HOLD TITE read and understand the Installation and Operation Manual Powerpack Location Options Coordinate powerpack location and hose length for proper placement Dock Face Self Contained Appropriate location when the likelihood of flooding snow removal and damage from trailer trucks is minimal Also recommended for use with non hydraulically powered dock levelers Inside Building Remote Mount Locate powerpck to minimize obstruction potential Hydraulic and electrical lines from the Powerpack to the restraint are best placed through min 3 PVC hydraulic and 3 4 electrical chase during pit construction 4111 0017 Nov 2006 June 2009 INSTALLATION Concrete Dock Face Standard Installation Wedge Anchors Method Wall Embed Method Using back plate as a guide drill eight Weld three sides of HOLD TITE 8 holes for wedge anchors 3 4 x 5 back plate to the optional embed 1 4 min Kit 42103 0004 mounting plate Part 7953 0119 with continuous 1 4 fillet weld MF i TT a E CI E E E 20 da 5 1 4 minimum located 2 pp above ii E TE eae e 3 8 Cantilevered Dock For bumper projection gt 4 or cantilevered dock or Edge of Dock leveler Driveway Mount Wall Mount To dete
11. a hydraulic pump The hydraulic pump forces oil into the hydraulic cylinder causes the shoe to raise If no ICC Bar truck bumper Engaged button is activated motor will run the hydraulic pump The Hold Tite cylinder will extend and rotates the restraint 90 deg As the cylinder extends the slide block will travel under the shoe The Slide block on the hydraulic cylinder will move a rod which will make contact with the Z bar The Z bar will pass over the 3 prox switch Input light 3 will light on the PLC If input 4 is not lit on the PLC the power hold then store it s self The shoe rotates to the stores position The pump will run 10 seconds to make sure the shoe has completely stored then will time out and the pump will turn off If ICC Bar truck bumper Engaged button is activated motor will run the hydraulic pump The shoe will make contact with the ICC bar As the shoe makes contact the shoe will travel away from the ICC bar The rack will then pass in front 4 prox mounted on the latch block With the 4 prox lit will raise all the way and lock on the truck The pump will shut off one the shoe is at 90deg As the cylinder extends the slide block will travel under the shoe When the release button is pushed the motor will run and lower the shoe The pump will run 10 seconds to make sure the shoe has completely stored then will time out and the pump will turn off 17 NOTES Page intentionally left blank 18 4111 0017 Nov
12. injury 1751 0726 6 4111 0017 Nov 2006 June 2009 SAFETY DECALS Page intentionally left blank 4111 0017 Nov 2006 7 June 2009 INTRODUCTION Congratulations on your choice of a McGuire Hold Tite truck restraint This manual covers the Hold Tite Truck restraint operating system Designed by McGuire to be a marvel of simplicity and efficiency your truck restraint when properly installed will provide many years of trouble free performance with an absolute minimum of maintenance lts revolutionary hydraulic system efficiently controls and operates every function To obtain maximum performance and longest possible use a simple program of preventive maintenance is recommended and is outlined in this manual The Hold Tite truck restraint is designed to seek find and maintain a tight continuous hold on the RIG Rear Impact Guard bar effectively eliminating trailer creep As an optional safety feature the dock leveler and truck restraint can be interlocked preventing operation of the dock leveler until the hold engages the truck RIG bar The Truck restraint is firmly anchored to the drive way approach or the building wall for maximum holding power The Hold Tite restraint is designed to withstand a pulling force of 30 000 lbs The Hold Tite truck restraint comes equipped with an electrical control panel which allows push button operation of the truck restraint functions When combining a McGuire D
13. to draw attention to a procedure that needs to be followed to prevent machine damage 4111 0017 Nov 2006 June 2009 SAFETY General Operational Safety Precautions Read and understand the operating instructions and become thoroughly familiar with the equipment and its controls before operating the dock leveler Never operate a dock leveler while a safety device or guard is removed or disconnected Never remove DANGER WARNING or CAUTION signs or decals on the equipment unless replacing them Do not start the equipment until all unauthorized personnel in the area have been warned and have moved outside the operating zone Remove any tools or foreign objects from the operating zone before starting Keep the operating zone free of obstacles that could cause a person to trip or fall SAFETY Operational Safety Precautions A Learn the safe way to operate this equipment Read and understand the manufacturer s instructions If you have any questions ask your supervisor wer EE Stay clear of dock leveling device when freight Chock restrain all freight carriers Never remove carrier is entering or leaving area the wheel chocks until loading or unloading is finished and truck driver has been given permission to drive away IN O Do not use a broken or damage dock leveling Do not move or use the dock leveling device if device Make sure proper service and anyone is under or in front of it mai
14. E ACTIVATE the Auto Return to Dock feature Push and hold the RAISE button until the platform is fully open The lip will extend until the switch opens up and stops the pump The lip will be extended only 2 3 inches to stay with in the bumper spacing The platform will float to the full below dock position and the trailer and be loaded unloaded When complete turn the Selector Switch F back to the NORMAL position and the platform will start to Auto Recycle to the cross traffic position NOTE When servicing trailers that are lower than dock height it is recommended the BELOW DOCK selector switch F be in the BELOW DOCK mode AFTER the lip is in the bed of the trailer to prevent the Auto Return feature to activate inadvertentiy Whenever end loading or unloading with the platform in the below dock position make sure the ARTD switch is in the BELOW DOCK position DO NOT turn the ARTD switch to the NORMAL position until end loading or unloading is finished 25 NOTES This page intentionally left blank 26 4111 0017 Nov 2006 June 2009 TROUBLESHOOTING HOLD TITE Always stand clear of the dock leveler lip When service under the dock leveler is when working in front of the dock leveler required always lock all electrical disconnects in the OFF position after raising the platform and engaging the maintenance prop Failure to do this may result in serious personal injury or death The maintenance prop MUST
15. HOLD TITE EE o F g N l gt l i i eA WN na ji PA g i gt j 4 PO 4 pa Bis WE E am mii aaa we Aa Si US MY yy m ae M al a a I a a e a a SuM A Division of Systems Inc OWNER S USER S MANUAL O MCGUIRE Division of Systems Inc e W194 N11481 McCormick Drive Germantown WI 53022 800 624 8473 fax 262 255 9399 www wbmcguire com techservices docksystemsinc com Printed in U S A Manual No 4111 0017 Copyright 2009 Nov 2006 June 2009 Table of Contents Page Safety Recognize Safety Information 0 1 General Operational Safety Precautions 1 Operational Safety Precautions 2 Maintenance Safety Precautions 4 Safety DecalS lt a ik sn uo e a See Se iw l a 5 Introduction General Information es 8 Installation Hold litelnstallationOverview 10 Component Identification ee 12 Operation TACO saye smmm edin eae eee a ec ee ee wee 13 Operatinginstructilons es 14 Sequence of Operation amana 15 Hold liteLightSeguence 2 a 16 Maintenance Service Dock Leveler RestraintSafely 19 Periodic Maintenance aaa 20 Adjustment And Testing Hold Tite Operation Range a aaa 21 A
16. NOT move or use the dock leveler if anyone is under or in front of leveler DO NOT operate any equipment while under the influence of alcohol or drugs Keep hands and feet clear of pinch points Avoid putting any part of your body near moving parts DO NOT leave equipment or material unattended on the dock leveler Failure to follow these instructions may result in severe personal injury or death Failure to follow these instructions may result in personal injury and or damage to equipment Only trained personnel should operate the dock leveler and truck restraint DO NOT use a broken or damaged dock leveler or truck restraint Make sure proper service and maintenance procedures have been performed on equipment before using Truck trailer wheels must be chocked unless the truck restraint is used Never remove the wheel chocks until loading unloading is finished and truck driver has been given permission to leave Make sure platform lip rests on the truck trailer bed with at least 4 in 102 mm of overlap Maintain a safe distance from side edges of leveler during the loading unloading process Failure to follow these instructions may result in serious personal injury or death 14 4111 0017 Nov 2006 June 2009 OPERATION SEQUENCE OF OPERATION NORMAL 1 Check that the truck trailer is positioned squarely against the dock bumpers Inside Red Light Outside Green Light 2 Push ENGAGE buiton to activ
17. SH HAZARD Open the pin latch and insert through the maintenance 1 75 1 073 1 prop housing and prop completely Close the pin latch to secure prop Use every time dock leveler is serviced Failure to comply will result in death or serious injury 1751 0731 44 DANGER CRUSH HAZARD DO NOT ENTER PIT unless dock leveler is safely supported by maintenance prop Place barriers on driveway and dock floor to indicate service work being performed Refer to owner s user s manual for proper maintenance procedures Failure to comply will result in death or serious injury 1751 0728 SAFETY DECALS Every 90 days quarterly inspect all safety labels and tags to ensure they are on the dock leveler and are easily leg ible If any are missing or require replacement please call 1 800 643 5424 for replacements 4 DANGER CRUSH HAZARD Maintenance prop must support leveler behind bar 1 75 1 0 727 Do not force maintenance prop forward of bar to support lip Refer to owner s user s manual for proper use Failure to comply will result in death or serious injury 1751 0730 x2 AMDANGER SAFETY INFORMATION Supports the ramp before driving on ramp Unsupported dock leveler ramps can lower unexpectedly Before allowing vehicle to leave the dock always e Ensure that no equipment material or people are on the dock leveler e Return the dock leveler to its stored position at dock level
18. The prox switch distance should between 1 16 and 1 8 C Adjust PRS 2 The 2 prox switch must be threaded in until flush with the latch block Turn prox switch out CCW until switch is no longer flush with the latch block 22 4111 0017 Nov 2006 June 2009 OPTIONAL EQUIPMENT ADJUSTMENTS Adjust Dock Leveler and Truck Restraint Interlock When service under the dock leveler is required always lock all electrical disconnects in the OFF position after raising the platform and engaging the maintenance prop Failure to do this may result in serious personal injury or death Always post safety warnings and barricade the work area at dock level and ground level to prevent unauthorized use of the dock leveler before maintenance is complete Failure to do this may result in serious personal injury or death Always stand clear of the dock leveler lip when working in front of the dock leveler The maintenance prop MUST be in the service position when working under the dock leveler For maximum protection use an OSHA approved locking device to lock the maintenance prop in the service position Only the person servicing the equipment should have the key to unlock the maintenance prop Unless the dock leveler is equipped with a tethered remote two people are required to engage the maintenance prop one person to operate the unit the other person to engage the maintenance prop Failure to follow these instructions may result in
19. ate restraint Inside Green and Yellow Light Outside Red Light 3 ENGAGED on Truck Restraint Inside Green Light Outside Red Light 4 Visually inspect restraint for proper engagement If RIG Rear Impact Guard is damaged or missing dock leveler can be used in BYPASS IF BYPASS MODE IS REQUIRED SEE SEQUENCE OF OPERATION BYPASS FOR NORMAL OPERATION AFTER TRAILER RIG IS ENGAGED CONTINUE WITH STEP 4 5 Position dock leveler onto truck trailer 6 When loading or unloading is complete return dock leveler to the stored position 7 Release truck restraint and or remove chocks from truck trailer wheels 4111 0017 Nov 2006 June 2009 SEQUENCE OF OPERATION BYPASS 1 Check that the truck trailer is positioned squarely against the dock bumpers 2 Push ENGAGE button to activate restraint Inside Green Light Red Outside Light 3 Visually inspect restraint for proper engagement If RIG Rear Impact Guard is damaged or missing dock leveler can be used in BYPASS 4 If RIG Rear Impact Guard is damaged or missing Shoe will automatically return to the stored position Inside Amber Light and LED will flash for 30 seconds then Flash Red Do Not Enter Outside Red Light will flash for 30 seconds then flash Green 5 Secure truck trailer wheels with wheel chocks 6 Use key to activate BYPASS mode Inside Green Light with Amber Caution Light Outside Red Light 7 Position dock leveler o
20. be in the service position when working under the dock leveler For maximum protection use an OSHA approved locking device to lock the maintenance prop in the service position Only the person servicing the equipment should have the key to unlock the Always post safety warnings and barricade maintenance prop the work area at dock level and ground level to prevent unauthorized use of the dock leveler before Unless the dock leveler is equipped with a tethered maintenance is complete Failure to do this may remote two people are required to engage the result in serious personal injury or death maintenance prop one person to operate the unit the other person to engage the maintenance prop Failure to follow these instructions may result in serious personal injury or death Before performing the detailed troubleshooting procedures check the following items first e Check all fuses inside the control panel s Replace e Make sure the correct voltages are present at the any blown fuse s with a fuse of equal specification proper locations inside the control panel s Inside and outside Bad Flasher Replace flasher with wire If lights operate lights signal lights do not will not flash replace flasher operate Controller PLC RUN indicator is on solid not flashing Unit operates as normal Restraint does not Motor overload device Reset overload relay 3 phase or replace fuse 1 operate Motor does not tripped phase
21. buse careless or negligent use or failure to maintain the unit as recommended by the owner s manual There are no guarantees either expressed or implied including any implied guarantees of merchantability or fitness for a particular purpose which shall extend beyond the guarantee periods indicated above This guarantee is valid only if the unit s is unaltered from original condition as delivered from the factory and a survey is completed by a McGuire representative
22. ce position when working under the dock leveler For maximum protection use an OSHA approved locking device to lock the maintenance prop in the service position Only the person servicing the equipment should have the key to unlock the maintenance prop Unless the dock leveler is equipped with a tethered remote two people are required to engage the maintenance prop one person to operate the unit the other person to engage the maintenance prop Failure to follow these instructions may result in serious personal injury or death Follow the installation instructions found in the Hold Tite Installation 4 Operation Manual prior to attempting any adjustments 4111 0017 Nov 2006 June 2009 NOTE Test operating range of Hold Tite without truck trailer backed into dock 1 Make sure the selector switch is in Normal and BYPASS mode has not been activated Red Inside Light No Amber Light Green Outside Light 2 Momentarily press the ENGAGE button The Hold Tite restraint will raise to 90 deg NO trailer the restraint will lower back to the stored position The motor will run additional 6 to 10 seconds in the stored position Inside Amber Light for 30 seconds then Red Alarm will sound if equipped Outside Red Light for 30 seconds then Green Operating range Refer to page 10 21 ADJUSTMENTS Hold Tite Adjustments Install prox flush then back out zz gt gt gt gt gt rs a di dl A p A a A
23. ce prop Whenever servicing the dock leveler lock the electrical power disconnect in the OFF position Use only an OSHA approved lockout device B and Unless the dock leveler is equipped with a tethered tagout device A remote two people are required to engage the maintenance prop one person to operate the unit the other person to engage the maintenance prop Only the person servicing the equipment should have the capability to remove the lockout devices The tagout devices must inform that repairs are in process and clearly state who is responsible for the Failure to follow these instructions may result in Ne lockout condition serious personal injury or death Refer to OSHA regulation 1910 147 4111 0017 Nov 2006 19 June 2009 MAINTENANCE Periodic Maintenance Apply white lithium grease or equivalent IMPORTANT Failure to properly lubricate the Truck Restraint will cause abnormal operation of the Restraint Daily Maintenance e Make sure that all the Inside and Outside signal lights work Weekly Maintenance e Operate the PowerHold truck restraint through the complete operating cycle to maintain lubrication NOTE position e Inspect the slide block track and push rod areas The areas must be kept free of dirt and debris Build up of foreign material in the track areas will cause abnormal operation Quarterly Maintenance e Clean and Lubricate slide block track and push rod ar
24. cription to help identify the item ordered Do not use item numbers These are only for locating the position of the parts Always give dock leveler MODEL NUMBER and or SERIAL NUMBER For service call or contact Systems Inc P O Box 309 Germantown WI 53022 Phone 800 624 8473 Fax 262 255 5917 4111 0017 Nov 2006 June 2009 Serial No McGuire Job No Original Owner Information Date of Installation 45 McGuire WARRANTY Hold Tite Truck Restraint All Hold Tite vehicle restraints feature a full Two 2 year base warranty on all structural hydraulic and electrical parts including freight and labor charges in accordance with McGuire Standard Warranty Policy Structural components carry an additional full three 3 year extended warranty with parts and labor McGuire warrants all components to be free of defects in materials and workmanship under normal use during the warranty period This base warranty period begins upon the completion of installation or the sixtieth 60th day after shipment whichever is greater In the event of any defect covered by this guarantee McGuire will remedy said defect by repairing or replacing all defective parts bearing all of the costs for parts labor and transportation All guarantee claims will be settled on a timely basis when defects are found to be from other than improper installation operating contrary to instructions or beyond rated load capacities a
25. djust Dock Leveler and Truck Restraint Interlock 23 ARTD Adjustment 0 c oococccoc ee 24 Troubleshooting Troubleshooting ia 27 Electrical Drawings nemi cose De dari arr a 33 Programming AAA 34 Manual Release 00ocococcococ es 35 Parts Valve BIOCKS escindida big Adi es 36 Hold Tite Break DOWN 0occcocococo 38 Power Pack Assembly Self Contained 40 Latch ASSEMDIY os essa re a ee ears rak 41 QUISIde SIGAS onic cant so e ena arios aan dd aaa 42 Outside ON S sour ao oud e a e 43 Miscellaneous Customer Information 00000 es 45 Warranty 6 peg drt ooh og e we ae r ol we awe ae we Back Cover 4111 0017 Nov 2006 June 2009 Recognize Safety Information Safety Alert Symbol The Safety Alert Symbol identifies important safety messages on equipment safety signs in manuals or elsewhere When you see this symbol be alert to the possibility of personal injury or death Follow the instructions in the safety message The use of the word DANGER signifies the presence of an extreme hazard or unsafe practice which will most likely result in severe injury or death The use of the word WARNING signifies the presence of a serious hazard or unsafe practice which may result in serious injury or death The use of the word CAUTION signifies possible hazard or unsafe practice which could result in personal injury IMPORTANT The use of the word IMPORTANT is
26. eas Lubricate pins for the Z bar Inspect and clean Prox switches 20 ANS TU HARAN MA a j Apply lubricant To ensure normal operation of the Truck Restraint use only aircraft hydraulic fluid designed to meet or exceed military specification MIL L 5606 It is recommended that the following hydraulic fluids be used e ULTRA VIS HVI 15 e Flomite 530 ZF e Aero Shell Fluid 4 or Fluid 41 e Mobile Aero HFA Mil HS606A or Aero HF e Texaco Aircraft Hydraulic Oil 15 or 5606 e Exxon Univis J13 These fluid brands can be mixed together Mixing with fluids that do not meet or exceed MIL L 5606 may damage the equipment and WILL void warranty Use of hydraulic fluids with equivalent specifications to those listed here are acceptable 4111 0017 Nov 2006 June 2009 ADJUSTMENT AND TESTING Hold Tite Operating Range When service under the dock leveler is required always lock all electrical disconnects in the OFF position after raising the platform and engaging the maintenance prop Failure to do this may result in serious personal injury or death Always post safety warnings and barricade the work area at dock level and ground level to prevent unauthorized use of the dock leveler before maintenance is complete Failure to do this may result in serious personal injury or death Always stand clear of the dock leveler lip when working in front of the dock leveler The maintenance prop MUST be in the servi
27. els into foundation wall Then proceed with adhesive anchors or weld plate embed 4111 0017 Nov 2006 11 June 2009 INSTALLATION Component Identification A Weldment E Valve Block H Slide Block B Latch Assembly F Shoe I Push Rod C Hydraulic Cylinder G Rack Weldment J Spring D Power Pack SC Only 06650240098 a AA dl no a T TWIDO Programmable Logic Controller 12 4111 0017 Nov 2006 June 2009 OPERATION Theory When the engage button A is pushed on the control panel this activates an electric motor which drives a hydraulic pump The hydraulic pump forces oil into the hydraulic cylinder causes the shoe to raise The shoe will make contact with the ICC bar The pump will shut off one the shoe is at 90deg Once the truck is locked When the release button B is pushed the motor will run and lower the shoe After the shoe is stored the pump will run 10 seconds then will time out and the pump will turn off If no ICC Bar is preset Hold Tite can be operated in bypass C Deana HOLD TITE A RESTRAINT VEHICLE RESTRAINT CONTROL aa cNGAGE meni EQuUrHoeE e OF Orca Saat ee ls mk e Eaa i ia 4111 0017 Nov 2006 June 2009 OPERATION Operating Instructions Stay clear of dock leveler when freight carrier is entering or leaving dock area DO NOT overload the dock leveler DO
28. hind bar 1 75 1 0727 Do not force maintenance prop forward of bar to support lip Refer to owner s user s manual for proper use Failure to comply will result in death or serious injury 1751 0730 x2 ADANGER SAFETY INFORMATION Unsupported dock leveler ramps can lower unexpectedly Before allowing vehicle to leave the dock always e Ensure that no equipment material or people are on the dock leveler e Return the dock leveler to its stored position at dock level Failure to follow posted instructions will result in death or serious injury Cal 262 255 1510 for replacement placards waming labels or ownersjusers manuals decal placed in same position on both sides 1751 0329 x2 decal placed in same position on both sides 1751 0330 x2 decal placed in same position on both sides A DANGER CRUSH HAZARD Do not remove main springs until leveler is safely supported by maintenance prop Main springs contain stored energy Be sure springs are fully unloaded and ends are loose before removal Refer to owner s user s manual for proper maintenance procedure Failure to comply will result in death or serious injury AMDANGER CRUSH HAZARD Do not work under dock leveler unless this maintenance prop has been secured in the upright position See owner s user s manual for proper procedures Failure to comply will result in death or serious injury 1751 0729 A DANGER CRU
29. ights Strobe 3 1 3055 0007 Complete Light Housing Clear Charcoal Incandescent Lights Strobe 1 3051 0063 Light Housing Only Yellow Plastic 1 3051 0100 Light Housing Only Clear Charcoal 1 3051 0102 Lens Housing Circuit Assembly Red LED 1 3051 0103 Lens Housing Circuit Assembly Green LED 2 3051 0085 Lamp 25W 120V Incandescent BAY Rated 1000 Hours 2 3051 0066 Socket Harness for Incandescent Lamp 2 1 3051 0064 Lens Red 3 1 3051 0065 Lens Green 4 1 3051 0068 Mounting Gasket 5 4 3051 0105 Clips Lens Holding 6 4 3051 0104 Screw Lens Holding Clip 7 1 Conduit Fastener 3 4 x 3 8 Included in Light Package 4111 0017 Nov 2006 June 2009 43 NOTES Page intentionally left blank 44 4111 0017 Nov 2006 June 2009 Customer Information MISCELLANEOUS NOTE Refer to illustration for left right orientation of dock leveler The model serial number decal A is located on the right platform joist near the front lip of dock leveler When you receive your dock leveler write down the dock leveler model and serial number in the form provided This will help ensure safe keeping of the numbers in the event the model serial number decal A becomes lost or damaged Also write down McGuire job number the company that installed the dock leveler and the original owners name This will all help to identify the specific dock leveler if more information is required When ordering use part numbers and des
30. ll pass in front of the 2 prox switch input 4 Remove object s from platform NOTE For safety reasons the dock leveler is designed to lift only the platform s own weight Check for visible obstructions that could cause binding Remove obstructions If no obstructions found call Systems Inc Technical Services See inside back cover for phone number and address Increase pressure relief See Adjust Main Pressure Relief in the Adjustment section NOTE The pressure relief valve must not be set at a level that causes the motor operating current to exceed the full load amp value at any time including when operating in pressure relief The full load amp value can be found on the inside cover of the control panel 4111 0017 Nov 2006 June 2009 TROUBLE SHOOTING HOLD TITE Platform rises slowly Low hydraulic fluid Add fluid see Maintenance section for proper fluid level and type Contaminated hydraulic Clean and inspect valves Flush contaminated oil system from hydraulic system Fill system with new oil See Periodic Maintenance in the Maintenance section Damaged or restricted Replace damaged hose s Remove restriction hydraulic hose s Pressure relief set too low Increase pressure relief See Adjust Main Pressure Relief in the Adjustment section NOTE The pressure relief valve must not be set at a level that causes the motor operating current to exceed the full load amp value at any time i
31. n coil snug avoid over tightening and causing valve to bind Operate unit Replace valve if problem persists and all other troubleshooting procedures 4111 0017 Nov 2006 29 June 2009 TROUBLE SHOOTING HOLD TITE Restraint raises makes contact with ICC bar but does not lock Then returns to stored position Platform does not rise Pump operates in pressure relief mode 30 Improper location of Hold Tite Prox switch Activation of 1 prox switch Activation of 2 prox switch Heavy object s on platform Dock leveler binds Pressure relief set too low Power Hold must have a 4 set back from bumper SEE page 1 Check prox switch 1 and 2 When metal is placed in front of prox the led light on the prox will light up When the led on the prox is lit the inputs 3 and 4 on the plc will also be lit Shorted or open prox switch open or shorted wires Bad prox switch Input 4 must come on first The restraint shoe must make contact with the ICC bar The restraint shoe will rotate as the hydraulic extends The Slide block on the hydraulic cylinder push The rod The rod will make contact with the Z bar The Z bar will pass over the 1 prox switch Input 3 will light on the PLC The power hold then shut off Frozen or rusted push rod Bend or damaged Z bar adjustment to prox maybe required The restraint shoe must make contact with the ICC bar The restraint shoe will rotate the ratchet wi
32. ncluding when operating in pressure relief The full load amp value can be found on the inside cover of the control panel Pump motor loads down Pressure relief set too high Decrease pressure relief See Adjust Main Pressure when platform reaches Relief in the Adjustment section the full raised position NOTE The pressure relief valve must not be set at a level that causes the motor operating current to exceed the full load amp value at any time including when operating in pressure relief The full load amp value can be found on the inside cover of the control panel Shoe does not rise to full Low hydraulic fluid Add fluid see Maintenance section for proper fluid level and type Platform DOES rise to full Low hydraulic fluid Add fluid see Maintenance section for proper fluid height but lip DOES NOT extend or extend fully level and type 4111 0017 Nov 2006 31 June 2009 TROUBLE SHOOTING DOCK LEVELER Platform locks into Platform lowering speed is Adjust platform down speed control safety as platform too fast lowers Lip drops to vertical position See Adjust Cable Weight and Down Speed Control in the Adjustment section NOTE Extreme cold weather OR incorrect fluid may cause platform to lock Adjustment is same 32 4111 0017 Nov 2006 June 2009 LADDER LOGIC HOLD TITE l l i DC OUT l 201 l l 202 l l 203 PB1 ACTIVATES RESTRAINT l l
33. ntenance procedures have been performed before using A e _ or Keep hands and feet clear of pinch points Avoid Make sure lip overlaps onto trailer at least 4 in putting any part of your body near moving parts 102 mm Keep a safe distance from both side edges 2 4111 0017 Nov 2006 June 2009 SAFETY E wer Do not use dock leveling device if freight carrier is too high or too low Do not overload the dock leveling device Do not operate any equipment while under the influence of alcohol or drugs Do not leave equipment or material unattended on dock leveling device 4111 0017 Nov 2006 3 June 2009 SAFETY Maintenance Safety Precautions ALWAYS disconnect electrical power source and ground wire before welding on dock leveler DO NOT ground welding equipment to any hydraulic or electrical components of the dock leveler Always ground to the dock leveler frame Failure to follow these instructions may result in damage to dock leveler and or serious personal injury or death Hydraulic and electrical power must be OFF when servicing the equipment For maximum protection use an OSHA approved locking device to lock out all power sources Only the person servicing the equipment should have the key to unlock the device DO NOT grind or weld if hydraulic fluid or other flammable liquid is present on the surface to be ground or welded DO NOT grind or weld if uncontained hydraulic fluid or o
34. nto truck trailer 8 When loading or unloading is complete return dock leveler to the stored position Inside Green Light with Amber Caution Light Outside Red Light 9 Reset BYPASS mode to NORMAL mode by pressing the LOCK button once Inside Red Light Amber turns Off Outside Green Light Pressing the LOCK button during any part of the cycle will end the BYPASS mode Pressing the LOCK button a second time will cycle the Hold Tite 10 Un chock the truck trailer wheels when truck is ready to depart OPERATION CONDITION STORED BEGIN END IN MOTION HOOKED OVERRIDE MISSED ICC TIMEOUT FAILURE TIMEOUT FAILURE IN MOTION Hold Tite Light Sequence LIGHTS INSIDE 0 9 RED 0 6 AMBER 0 5 GREEN 0 5 0 6 GREEN AMBER 0 6 30sec 0 4 AMBER TIME RED 0 9 0 6 RED AMBER 0 8 AMBER OUTSIDE 0 8 GREEN 0 7 0 6 RED amp STROBE 0 7 RED 0 7 0 6 RED STROBE O 7 30sec 0 8 RED TIME GREEN STROBE 0 8 0 7 0 6 RED STROBE 0 5 0 8 RED STROBE A NEW LOCK CYCLE OR BYPASS WILL OVERRIDE MISSED ICC TIMEOUT FAILURE OVERRIDE MISSED ICC EMERGENCY STOP Where Equipped OVERRIDES EVERY OTHER CONDITION 0 4 WHEN E STOP IS DEPRESSED RED 0 5 RED 4111 0017 Nov 2006 June 2009 OPERATION 4111 0017 Nov 2006 June 2009 When the engage button is pushed on the control panel this activates an electric motor which drives
35. ock Leveler with a Hold Tite truck restraint the control panel will allow for operation of both units in the same control panel Each Hold Tite McGuire Dock Leveler and control panel has been factory prewired and tested to ensure satisfactory operation To illustrate which connections are to be made in the field at installation electrical drawings are included with each order or by contacting McGuire Technical Services Once again thank you and congratulations on your purchase of a McGuire Hold Tite truck restraint Due to ongoing product improvement some parts have changed along with operation and trouble shooting methods For further assistance please contact McGuire Technical Service at 800 6248473 or techservices docksystemsinc com 4111 0017 Nov 2006 June 2009 NOTES Page intentionally left blank 4111 0017 Nov 2006 9 June 2009 INSTALLATION HOLD TITE Overview Control Boor Ju Electrical Conduit From The e Conduit From The Control Box bi al g 1138 in E ib EHHI Located 2 qu Elec Junction Above Grade Box Ai The Pil And HOLD TITE By Others HOLD TITE imbad Plato Md 20 HOLD TITE Remote Mount Powerpack DISCONNECT BY OTHERS CONTROL BOX NEMA 12 CONDUIT FROM THE CONTROL BOX TO OUTSIDE SIGNAL LIGHT ASSEMBLY CONTROL PANEL PUMP PANEL ANCHORED POWER 1PH OR 3PH TO WALL 4 PLACES OUTSIDE SIGNAL LIGHT ASSEMBLY
36. rmine size offset required take total ef Determine offset then For filler requirements from 1 1 2 to fective bumper projection bumper size plus any Dim A proceed with Driveway 7 1 2 use cantilever bracket 9414 cantilever and subtract 4 gt gt e 0054 and anchor cantilever bracket to Mount instructions below Dim A the dock face or weld to embedded mounting plate 3 4 Dia x 5 1 4 min Kit 2103 0004 or weld to embedded mounting plate Part 7953 01 19 Offset Formula Dim A Dim B Bumper Projection Cantelever For filler requirements for 8 3 4 to 13 3 4 use cantilever bracket 9414 0055 and E Dim B anchor cantilever bracket to the dock face 3 4 Dia x 5 1 4 min Kit 2103 0004 or weld to embedded mounting plate Part 7953 0119 gt kt Offset ffset 48 Driveway Mount Recommended when dock face is unsuitable for HOLD TITE Mounting Drive Anchors Method Drive Embed Method Driveway mount lk p n Weld Method requires attachment ss seh ike 4 Dia va e wedge Properly locate and level the drive embed weld plate Part to a concrete drive anchors at the base of the ME 7953 0132 in the drive approach Observe Cantilever greater than 8 conditions for proper positioning Weld restraint to embed thick For asphalt plate with a continuous 1 4 filet weld drive pour 48 x 48 x 8 min Concrete pad and include A HH six 6 3 4 dow
37. structions may result in by others serious personal injury or death 3 Loosen nuts A Slide bolt up to engage ARTD higher below dock or slide down to engage ARTD NOTE The unit must raise enough to allow the lip to lower below dock Tighten nuts fully retract to have the lip rest in to the lip keepers 4 Turn power back on and run the unit through a full NOTE The ARTD Switch arm D must be between cycle and repeat if necessary both A and B to work properly 5 Loosen nut B and slide bolt up to shut ARTD higher above dock or slide the bolt down to shut off the ARTD less above dock 24 4111 0017 Nov 2006 June 2009 OPTIONAL EQUIPMENT ADJUSTMENTS In the full below dock position the switch arm D will be activated by the front bolt A and trapped under the back bolt B The switch will active approximately 1 inch before the front header is fully below dock As the platform starts to recycle the lip will pull in first and then the platform will start to raise Once the platform is high enough to have the lip clear the lip keepers the back bolt B will de activate the switch and turn off the pump and the platform will float down to rest in the lip keepers in the cross traffic position Below Dock End Load Switch 4111 0017 Nov 2006 June 2009 The Below Dock End Load Switch E controls the lip when end loading below dock To activate turn the selector switch F to BELOW DOCK position This will D
38. tenance section for proper fluid raise or motor level and type overcurrent device and or overload device Debris in Tank Drain and clean tank debris cannot be cleaned out continuously tripping replace tank Restraint does not raise Solenoid Not energized Locate solenoid See Page amp Coil must be energized when P Hold is in engage mode Check valve for Magnetism at the coil Bad Spool Valve Remove coil from cartridge valve and cartridge valve from valve block Check valve for contaminant s and or damage Replace valve if damaged Carefully wipe valve with clean rag do not damage O rings on valve NOTE Do not over tighten valve into block Max Torque 10 15 Ib ft or snug to prevent leakage Tighten coil snug avoid over tightening and causing valve to bind Operate unit Replace valve if problem persists and all other troubleshooting procedures performed Restraint will not lower Solenoid staying energized Relay or PLC contact is stuck contacts Test coil for to release truck Magnetism see page 40 41 Coil must be de energized to release the truck Bad Spool Valve Remove coil from cartridge valve and cartridge valve from valve block Check valve for contaminant s and or damage Replace valve if damaged Carefully wipe valve with clean rag do not damage O rings on valve NOTE Do not over tighten valve into block Max Torque 10 15 Ib ft or snug to prevent leakage Tighte
39. ther flammable liquid is present Stray sparks can ignite spills or leaks near the work area Always clean up the oil leaks and spills before proceeding with grinding or welding Always keep a fire extinguisher of the proper type nearby when grinding or welding Always post safety warnings and barricade the work area at dock level and ground level to Failure to follow these instructions may result in prevent unauthorized use of the unit before serious personal injury or death maintenance is complete ALWAYS stand clear of dock leveler lip when working in front of the dock leveler Failure to do this may result in serious personal injury or death AL The maintenance prop must be in the upright service position when working under the dock leveler For maximum protection use an OSHA approved locking device to lock the maintenance prop in the service position Only the person servicing the equipment should have the key to unlock the device 4 4111 0017 Nov 2006 June 2009 Dock Leveler Safety Decals Every 90 days quarterly inspect all safety labels and tags to ensure they are on the dock leveler and are easily leg ible If any are missing or require replacement please call 1 800 643 5424 for replacements YAN NN a GB VAY il M ZE R Sy NVI WN Sew ime L 4111 0017 Nov 2006 June 2009 SAFETY 4 DANGER CRUSH HAZARD Maintenance prop must support leveler be
40. tity Part Number Description A 1 9301 0199 Breather Cap B 1 9411 0047 Cover Power Pac C 1 9301 0085 Filter 3 8 NPT D 2 9904 0051 Hose 16 00 LG 3 8 NPTM 6 Jic Swivel Female F 7 2101 0009 Bolt 5 16 18 UNC 3 4 Lg 1 3411 0008 Motor Only G 1 9395 0022 Power Pac Complete SC 40 4111 0017 Nov 2006 June 2009 INPUT 3 Prox Switch 1 PARTS Nooo Switch 2 INPUT 4 item Quantity Part Number Description A 2 0963 0037 Prox Switch B 1 0941 0008 Spring C 1 0941 0009 Spring D 1 2101 0012 Bolt 5 16 18 UNC E 1 2101 0202 Nut Hex 5 16 18 UNC F 1 9414 0065 Latch Assembly Complete With Prox Switches 4111 0017 Nov 2006 June 2009 41 PARTS Outside Signs J HO N OF QU GR ON TON MO Typ n Mo M3 Y FE LY JA item Quantity Part Number Description SIGN PULL IN OUT ON GREEN ONLY A 1 17 91 0033 RIGHT READING 16 7 8x8x3 32 B 1 1751 0034 SIGN PULL IN OUT ON GREEN ONLY MIRROR IMAGE 16 7 8x8x3 32 42 4111 0017 Nov 2006 June 2009 PARTS OSLA Outside Light Assembly 44 Item Quantity Part Number Description X 1 3055 0008 Complete Light Housing Yellow Plastic LED Lights 1 3055 0002 Complete Light Housing Yellow Plastic Incandescent Lights 1 3055 0009 Complete Light Housing Clear Charcoal LED L
41. uit Restraint does not disconnect operate Motor runs in reverse Single phase units only Line voltage too low Check wiring to motor for high resistance Check for Restraint does not loose or corroded connections Check if gauge of operate wires to motor are of correct size and specification for load requirement Replace if necessary Motor energizes but does not run Defective motor centrifugal Replace motor switch Defective motor capacitor Replace motor Low hydraulic fluid Add fluid see Maintenance section for proper fluid level and type Restraint operates Low hydraulic fluid Add fluid see Maintenance section for proper fluid slowly level and type Pressure relief valve set too See pressure relief adjustments on page 48 low combination unit only NOTE The pressure relief valve must not be set at a level that causes the motor operating current to exceed the full load amp value at any time including when operating in pressure relief The full load amp value can be found on the inside cover of the control panel Hold Tite raises Slow or Pressure Relief cartridge adjusted per max amp Slow to release draw SC Hold Tite Only Damage or blocked hydraulic Replace damaged hose s Check and remove hose s and or valve s blockage from hose s and or valve s 28 4111 0017 Nov 2006 June 2009 TROUBLE SHOOTING HOLD TITE Restraint does not fully Low hydraulic fluid Add fluid see Main
42. vel to prevent unauthorized use of the dock leveler before maintenance is complete Failure to do this may result in serious personal injury or death A ARTD ACTIVATE C ARTD LIMIT SWITCH B ARTD DE ACTIVATE D ARTD SWITCH ARM HP H levelers are equipped with the optional Auto Return To Dock ARTD if leveler not interlocked with a truck restraint Always stand clear of the dock leveler lip when l working in front of the dock leveler The ARTD allows the platform to automatically return to the cross traffic stored position after the truck The maintenance prop MUST be in the service departs position when working under the dock leveler For Adjust the ARTD as Follows maximum protection use an OSHA approved locking device to lock the maintenance prop in the NOTE Placement of A B and C are typical factory service position Only the person servicing the settings ARTD is set to engage approximately equipment should have the key to unlock the one 1 in before the front header hits the maintenance prop header stops Unless the dock leveler is equipped with a tethered 1 Raise platform fully and engage the maintenance remote two people are required to engage the prop in the service position maintenance prop one person to operate the unit the other person to engage the maintenance prop 2 Turn OFF all electrical power to the dock leveler Attach safety lockout and tagout devices Supplied Failure to follow these in
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