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Rev 19.3/9-18 

16 

VL411LDC: #35162 

• Keep a written record of all Periodic Inspections. 
If any deficiency is detected during the inspection, correct it before using the lifter.    If 

necessary, return the lifter to Powr-Grip or an authorized dealer for repair (see LIMITED 

WARRANTY). 

Infrequent Use 

If a lifter is used less than 1 day in a 2-week period, perform the Periodic Inspection 

each time 

before using the lifter. 

T

ESTING 

S

CHEDULE

 

Perform these tests when placing the lifter in service 

initially and each time following a repair or 

modification.    Correct any deficiency and retest before using the lifter. 

Operational Tests 

• Perform the V

ACUUM 

T

EST

 to follow. 

• Test all features and functions of the lifter (see OPERATING FEATURES, OPERATION and 

MAINTENANCE). 

Load Test 

Prove that the lifter can lift 100% of its Maximum Load Capacity (see SPECIFICATIONS), using an 

actual load or an equivalent simulation.

6

    Employ the following method to test with an actual 

load: 
1)  Place a test load with appropriate L

OAD 

C

HARACTERISTICS

 (see INTENDED USE) on a stable 

support.    Make sure the load is oriented in the upright position.

7

 

2)  Apply the vacuum pads to the load as previously directed. 
3)  After the vacuum pump stops running, disconnect the electrical connector uniting the battery 

with the vacuum generating system. 

  Note: After the test is completed, move the valve handle to the “release” (        ) position 

(power 

off) before reconnecting the battery. 

4)  Raise the load a minimal distance, to assure that it is supported by the lifter. 
5)  Hold the load for 5 minutes.    The load must not slip or fall during this time period.    If it 

does, conduct a V

ACUUM 

T

EST

 and inspect each vacuum pad as indicated under V

ACUUM 

P

AD 

M

AINTENANCE

: Inspection (see sections to follow).    Correct any deficiency that is found and 

retest the lifter. 

Note:    See MAINTENANCE topics to follow for additional directions about inspecting and testing 
specific lifter components.    Since the low vacuum warning buzzer is controlled by a vacuum 
switch, consult the V

ACUUM 

S

WITCH 

A

DJUSTMENT

 discussion for inspection, testing and adjustment 

procedures. 
                                        

6

    ASME Standard B30.20 requires the lifter to be tested to 125% of its Load Capacity. 

7

    Flat Lifters are exempt from this requirement. 

Summary of Contents for VL411LDC

Page 1: ...________ please see serial label and record number here VERTICAL LIFTER 700 DC VOLTAGE READ ALL INSTRUCTIONS AND WARNINGS BEFORE OPERATING THIS LIFTER DESIGNED FOR THE MATERIALS HANDLING PROFESSIONAL...

Page 2: ......

Page 3: ...eading the Vacuum Gauge 11 Vacuum Level on Optimal Surfaces 11 Vacuum Level on Other Surfaces 11 TO LIFT AND MOVE THE LOAD 12 Load Capacity and the Warning Light 12 Monitoring Vacuum Indicators 12 Mon...

Page 4: ...Procedures 21 VACUUM PUMP MAINTENANCE DYNAFLO DV1032102 22 Replacing the Diaphragm 22 Replacing the Head Assembly 22 VACUUM PUMP MAINTENANCE THOMAS 107CDC20 23 Replacing the Diaphragm 23 Replacing the...

Page 5: ...load weight higher than 16 Hg 54 kPa and whenever vacuum loss causes pump to re engage Low Vacuum Warning Buzzer if applicable Maximum Alarm Volume 103 dBA at 2 60 cm While lifter is powered up audibl...

Page 6: ...y or attempt to lift loads that the lifter is not designed for see INTENDED USE LOAD CHARACTERISTICS Never attempt to lift cracked or broken glass with this lifter Always position the vacuum pads corr...

Page 7: ...heir first appearance in each section Standard VL411LDC shown 1 LIFT SLING 6 Enclosure with VACUUM PUMP 11 CONTROL HANDLES 2 LIFT SPOOL VACUUM SWITCH and LOW VACUUM 12 VACUUM GAUGE 3 PAD FRAME WARNING...

Page 8: ...ached to the lifter Then attach the free eye of each lift sling onto the hoisting equipment hook WARNING Hoisting equipment hook must be fitted with restraining latch to prevent lift slings from slipp...

Page 9: ...res Contact Wood s Powr Grip or an authorized dealer for more information While the minimum length and width of the load are determined by the Pad Spread see SPECIFICATIONS the maximum length and widt...

Page 10: ...failure Using the lifter in wet environments may require the operator to take special precautions Moisture on contact surfaces of the load or vacuum pads diminishes the lifter s slip resistance there...

Page 11: ...Performing Inspections and Tests WARNING Always check battery energy before using lifter See MAINTENANCE BATTERY TEST Perform all inspections and tests required by the INSPECTION and TESTING SCHEDULE...

Page 12: ...ATIONS Pad Spread and that they will be loaded evenly while lifting see SPECIFICATIONS Per Pad Load Capacity Then apply the lifter to the load so that all pads are touching the contact surface Sealing...

Page 13: ...case of contamination thoroughly clean the contact surfaces of the load and the vacuum pads see MAINTENANCE VACUUM PAD MAINTENANCE Cleaning and reapply the lifter to the load If the load has rough or...

Page 14: ...n in vacuum to the operator If the pump and warning light turn on while you are lifting a load make sure the vacuum gauge shows a vacuum level of 16 Hg 54 kPa or higher If not move away and stay clear...

Page 15: ...and Load When vacuum indicators show that the lifter is ready use the hoisting equipment to raise the lifter and load as needed to clear any obstacles in their path Use the control handles to keep th...

Page 16: ...ers supplied to keep the vacuum pads clean CE In accordance with CE Standard EN 13155 the lifter is designed to rest on relatively horizontal surfaces without tipping over To store the lifter in this...

Page 17: ...ut of service for 1 month or more Examine the lifter s structure for visual damage Examine the vacuum system including vacuum pads fittings and hoses for visual damage Examine the air filter for condi...

Page 18: ...ERISTICS see INTENDED USE on a stable support Make sure the load is oriented in the upright position 7 2 Apply the vacuum pads to the load as previously directed 3 After the vacuum pump stops running...

Page 19: ...energy registers lower than 50 that is when only red lights are illuminated regardless of the estimated energy requirement WARNING Never use lifter if battery energy is lower than 50 of capacity Whil...

Page 20: ...e battery energy again before operating the lifter see BATTERY TEST preceding VACUUM PAD MAINTENANCE Friction Coefficient The friction coefficient represents the lifter s ability to resist load slippa...

Page 21: ...ess or glaze see REPLACEMENT PARTS LIST Cleaning Regularly clean the face of each vacuum pad to remove oil dust and any other contaminates Acceptable cleaning agents include soapy water and other mild...

Page 22: ...s running leave the pads attached to the surface and interrupt the energy flow from the battery Disconnect the electrical connector uniting the battery to the vacuum generating system Note After the v...

Page 23: ...ment element gaskets 7 and bowl seal for disposal later 5 Clean all other internal parts and the bowl using mild soap and water only Do not use any other cleansing agents 6 Place the new element gaske...

Page 24: ...washer rubber O ring diaphragm and diaphragm retaining screw 4 Reverse the steps above for reassembly as shown Replacing the Head Assembly15 1 Remove the hose fittings from the head assembly and care...

Page 25: ...our head screws 1 and remove the head 2 2 Invert the head and remove the four valve plate screws 9 3 Lift out the valve plate 6 to access the exhaust valve flapper and head gasket 16 4 Remove the exha...

Page 26: ...ped with the Dual Vacuum System have 2 vacuum switches Directions are the same for these lifters except that each vacuum switch must be tested and adjusted individually When you are evaluating vacuum...

Page 27: ...urn the screw counter clockwise when viewing vacuum switch from end with electrical connectors 2 Recheck the vacuum switch setting following each 1 6th turn of the adjustment screw In order to test th...

Page 28: ...7 Amp Hours 1 64590 Battery Gauge 1 64460 Circuit Breaker 15 A 1 64283 Bulb 13 V Bayonet for low vacuum warning light 1 64251 Red Indicator Light 12 V DC aka low vacuum warning light 1 64236 Vacuum Sw...

Page 29: ...se Repairs are required due to abnormal wear and tear The product has been damaged misused or neglected If a problem is not covered under warranty Powr Grip will notify the customer of costs prior to...

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