WPG MRT411LDC Manuale utente

Rev 29.0/10-19 MRT4-DC: #35070i

INTENDED FOR USE BY SKILLED

PROFESSIONALS • READ AND

UNDERSTAND BEFORE OPERATING

OPERATING

INSTRUCTIONS 908 W. Main • P.O. Box 368

Laurel, MT USA 59044

800-548-7341 (phone)

406-628-8231 (phone)

406-628-8354 (fax)

www.WPG.com

Record serial number in blank space above (to locate, see serial

label on the product).

MANUAL ROTATOR/TILTER,

DC-VOLTAGE

Model numbers: MRT411LDC (shown), MRT49DC,

MRT4HV11DC

KEEP FOR FUTURE REFERENCE

MRT4-DC: #35070 Rev 29.0/10-19ii

Rev 29.0/10-19 MRT4-DC: #35070iii

SPECIFICATIONS .....................................................................................3

SAFETY...................................................................................................5

OPERATING FEATURES............................................................................6

ASSEMBLY..............................................................................................7

TOCHANGE THE PAD FRAME CONFIGURATION ..................................................9

Installing/Removing Extension Arms and Repositioning Vacuum Pads ............................10

Using Secondary Rotation Stops .......................................................................................11

INTENDED USE .....................................................................................12

LOAD CHARACTERISTICS...............................................................................12

OPERATING ENVIRONMENT..........................................................................13

DISPOSAL OF THE LIFTER .............................................................................13

OPERATION..........................................................................................14

BEFORE USING THE LIFTER...........................................................................14

Taking Safety Precautions .................................................................................................14

Performing Inspections and Tests .....................................................................................14

Checking the Battery.........................................................................................................15

TOATTACH THE PADS TO ALOAD ..................................................................16

Positioning the Lifter on the Load.....................................................................................16

Sealing the Pads on the Load............................................................................................17

Reading the Vacuum Gauge..............................................................................................17

TOLIFT AND MOVE THE LOAD......................................................................18

Interpreting the Warning Light and Optional Warning Buzzer .........................................18

Watching Vacuum Indicators ............................................................................................18

Controlling the Lifter and Load .........................................................................................19

In Case of a Power Failure.................................................................................................19

TOROTATE THE LOAD .................................................................................20

TOTILT THE LOAD ......................................................................................21

TORELEASE THE PADS FROM THE LOAD .........................................................23

AFTER USING THE LIFTER.............................................................................23

Storing the Lifter ...............................................................................................................23

INSPECTIONS AND TESTS......................................................................25

INSPECTION SCHEDULE ................................................................................25

TABLE OF CONTENTS

MRT4-DC: #35070 Rev 29.0/10-19iv

TESTING ...................................................................................................26

Lifter/Load Compatibility Test...........................................................................................26

Operational Tests ..............................................................................................................27

Vacuum Test......................................................................................................................27

Rated Load Test.................................................................................................................28

MAINTENANCE ....................................................................................29

VACUUM PAD MAINTENANCE.......................................................................29

Pad-to-Load Friction Coefficient .......................................................................................29

Pad Inspection ..................................................................................................................29

Pad Cleaning .....................................................................................................................30

BATTERY RECHARGE....................................................................................31

REPLACEMENT PARTS...........................................................................32

LIMITED WARRANTY ............................................................................33

TOOBTAIN REPAIRS OR WARRANTY SERVICE...................................................33

TABLE OF CONTENTS

Rev 29.0/10-19 MRT4-DC: #350703

Product

Description

Designed for use with hoisting equipment, MRT4-DC lifters support loads using vacuum and manipulate

loads using manual 360° rotation and manual 90° tilt motions.

Model

Number MRT49DC MRT4HV11DC MRT411LDC

Vacuum Pads1

(4 each, standard rubber)

1...... Available with other rubber compounds for special purposes (see www.WPG.com).

9" [23 cm] nom. diameter

(Model VPFS9)

10" [25 cm] nom. diameter,

lipped (Model HV11)

11" [28 cm] nom. diameter,

lipped (Model G3370)

Pad Spread2

2...... The illustrations under “TOCHANGE THE PAD FRAME CONFIGURATION” on page 9 show the Pad Spread for all approved pad frame configurations.

---------------------------- (to outer edges) ----------------------------

Length ‒Maximum 75¼" [192 cm] 77¼" [197 cm] 78¼" [199 cm]

Length ‒Minimum 29¾" [76 cm] 31¾" [81 cm] 32¾" [83 cm]

Width ‒Maximum 46½" [119 cm] 48½" [124 cm] 49½" [126 cm]

Width ‒Minimum 12¾" [33 cm] 14¾" [38 cm] 15¾" [40 cm]

Maximum Load

Capacity3

3...... The Maximum Load Capacity is rated at a vacuum of 16" Hg [-54 kPa] on clean, smooth, nonporous flat surfaces with a friction coefficient of 1. Pad

compound, load rigidity, strength, surface conditions, overhang, angle, center of gravity and temperature can also affect the lifting capacity. A “qualified

person” should evaluate the effective lifting capacity for each use (see definition under “Rated Load Test” on page 28).

Per-Pad 125 lbs [56.5 kg] 150 lbs [68 kg] 175 lbs [80 kg]

Total 500 lbs [225 kg] 600 lbs [270 kg] 700 lbs [320 kg]

Lifter

Weight 135 lbs [62 kg]

Power

System 12 volts DC, 3.5 amps

Battery

Capacity 7 amp-hours

Rotation

Capability Manual, 360°, with latching at each ¼ turn (when required)

Tilt

Capability Manual, 90°, with automatic locking in vertical position

Product

Options See separate instructions about options.

Operating

Elevation Up to 6,000' [1,828 m]

Operating

Temperatures 32° — 104° F [0° — 40° C]

Service

Life 20,000 lifting cycles, when used and maintained as intended4

4...... Vacuum pads, filter elements and other wear-out items are excluded.

!!–CE–!! This symbol appears only when a CE Standard is different from other applicable standards. CE requirements are

mandatory in the European Union, but may be optional elsewhere.

ASME Standard

BTH-1 Design Category "B", Service Class "0" (see www.WPG.com for more information)

SPECIFICATIONS

MRT4-DC: #35070 Rev 29.0/10-194

SPECIFICATIONS

Note: A standard MRT411LDC is shown.

Rev 29.0/10-19 MRT4-DC: #350705

SAFETY

Wear personal protective

equipment that is appropriate for

the load material. Follow trade

association guidelines.

Do not remove or obscure safety

labels.

Do not make any modifications to

the lifter (see “LIMITED

WARRANTY”).

Use the lifter only in an approved

“OPERATING ENVIRONMENT”(see

“INTENDED USE”).

Do not use a lifter that is damaged,

malfunctioning, or missing parts.

Do not use a lifter if the sealing

edge of any vacuum pad is cut or

otherwise damaged.

Do not use a lifter to lift cracked or

broken glass.

Do not exceed the Maximum

Load Capacity or lift loads the

lifter is not designed for (see

“INTENDED USE”).

Do not use a lifter if the

Maximum Load Capacity or

any safety label appears to be

missing or obscured.

Make sure the contact surfaces of

the load and vacuum pads are clean

before attaching the lifter (see

“MAINTENANCE”).

Position the vacuum pads correctly

on the load before lifting (see

“OPERATION: Positioning the Lifter

on the Load”).

Do not lift a load if any vacuum

indicator shows inadequate

vacuum.

Keep unauthorized personnel away

from the lifter, to avoid injury in

case of an unintended load release.

Do not touch the vacuum release

controls during a lift.

Do not allow people to ride on the

lifter or the load.

Do not lift a load higher than

necessary or leave suspended loads

unattended.

Do not position a loaded or

unloaded lifter over people.

Before servicing a powered lifter,

place the power control in the

inactive position and, when

possible, disconnect the power source.

MRT4-DC: #35070 Rev 29.0/10-196

Features shown here are underlined on their first appearance in each section following.

1 LIFT POINT 8 BATTERY TEST BUTTON 15 CONTROL HANDLE

2 LIFT BAR 9 LOW VACUUM WARNING BUZZER (optional) 16 VACUUM RESERVE TANK

3 BATTERY 10 VALVE HANDLE 17 PAD FRAME

4 TILT RELEASE LEVER 11 VACUUM GAUGE 18 VACUUM PAD

5 LOW VACUUM WARNING LIGHT 12 ROTATION WEAR PLATE 19 EXTENSION ARM

6 Enclosure with VACUUM SWITCH 13 Cover for VACUUM PUMP 20 BATTERY CHARGER

7 BATTERY GAUGE 14 ROTATION RELEASE LEVER Not shown: INSTRUCTIONS CANISTER

Note: The lifter model MRT411LDC is shown here. Although some of the following photos do not

show this specific lifter, they all illustrate how this kind of lifter functions.

OPERATING FEATURES

Rev 29.0/10-19 MRT4-DC: #350707

2A 2B

Remove all lifter restraints and save them with the shipping container for future use.

2) Suspend the lifter from appropriate hoisting equipment:

2.1)

Select a crane and/or hoist rated for the Maximum Load Capacity plus the

Lifter Weight.

Note: Any lifter use must comply with all statutory or regulatory standards for

hoisting equipment in your region.

2.2) Disengage any tilt locks or latches, and raise the lift bar (figs. 2A-C).

2.3) Attach the hoisting hook to the

lift point (figs. 2D-E).

2D 2E

Make

sure hook

has restraining

latch (circled).

Only use rigging rated for Maximum Load

Capacity plus Lifter Weight.

Use

rigging (fig. 2F) as needed to

make sure the hook does not

interfere with the load.

ASSEMBLY

MRT4-DC: #35070 Rev 29.0/10-198

2.4) Use the hoisting equipment to remove the lifter from the shipping container. Avoid

damaging the vacuum pads.

3B3A

Connect the electrical connectors (figs. 3A-B and

figs. 3C-D).

Assemble the pad frame for optimal load support

(see “TOCHANGE THE PAD FRAME CONFIGURATION”on page 9).

Remove the pad covers (fig. 4A) and save them for future use.

5) Perform tests as required under “TESTING”on page 26).

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