Specifications – Wood’s Powr-Grip MRT49DC User Manual

Page 5

Rev 26.0/4-13

MRT4-DC: #35070

SPECIFICATIONS

Lifter Weight:

130 lbs [59 kg]

Power Source:

12 volts DC, 10 amps (with Thomas pump) or 3 amps (with Dynaflo pump)

Battery Capacity:

7 amp-hours

Rotation Capability:

Manual, 360°, with automatic locking at each ¼ revolution (when desired)

Tilt Capability:

Manual, 90°, with automatic locking in vertical position

Vacuum Pump:

Diaphragm type, 1 SCFM [28 liters/minute] nominal airflow

Vacuum Reserve Tank:

Vacuum reservoir helps prevent immediate vacuum loss in case of power failure and

extends battery life by reducing pump cycles required to maintain vacuum.

Vacuum Gauge:

Dial gauge indicates current vacuum level in positive inches of Hg and negative kPa.

Low Vacuum Warning Light: Red light is energized until vacuum level is sufficient to lift maximum 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 ft [60 cm]. While lifter is powered up, audible alarm

warns the operator whenever vacuum is not sufficient for lifting the maximum load weight.

Options:

See separate instructions about optional features.

Operating Elevation:

Maximum = 6000 feet [1828 meters]

Operating Temperatures:

32° to 104° F [0° to 40° C]

Service Life:

This lifter is designed to have a service life of at least 20,000 lifting cycles, when used and

maintained as intended. Vacuum pads, filter elements and other wear-out items are
excluded; see MAINTENANCE and REPLACEMENT PARTS LIST for more information. For

the D

ISPOSAL OF THE

IFTER

after its service life, see INTENDED USE.

ASME Standard BTH-1:

Design Category "B", Service Class "0" (see www.powrgrip.com for more information)

!!-CE-!! Note: This symbol appears in the

INSTRUCTIONS manual only when requirements of a CE Standard are different from

requirements of other standards that also apply to this vacuum lifter. CE requirements are mandatory in geographical areas
where CE Standards apply, but may be optional in other locations.

Available with optional closed-cell foam rings for rough or textured surfaces (Model MRT4HV11FDCO), as well as alternative

rubber compounds for special applications (see REPLACEMENTS PARTS LIST).

Load Capacity is based on a friction coefficient of 1; see MAINTENANCE: V

ACUUM

AINTENANCE

: Friction Coefficient for

additional information.

Description:

Designed for use with a crane or other hoisting equipment, MRT4-DC lifters employ

vacuum to hold a load for lifting, and they provide manual 360° rotation and manual 90°

tilt movements for load manipulation.

Model Number:

MRT49DC

MRT4HV11DC

MRT411LDC

Vacuum Pads:

9" [23 cm] nominal

diameter (Model VPFS9)

10" [25 cm] nom. dia.,

lipped (Model HV11)

11" [28 cm] nom. dia.,

lipped (Model G3370)

(Four, standard rubber, spring-mounted for ¼" [7 mm] travel, with #60 filter screen)

Maximum Pad Spread: (to outer edges)

Extended Configuration:

45¼" x 64¾"

47¼" x 66½"

48¼" x 67½"

[1152 mm x 1643 mm]

[1201 mm x 1690 mm]

[1227 mm x 1716 mm]

Basic Configuration:

25¼" x 30"

27¼" x 31¾"

28¼" x 32¾"

[642 mm x 760 mm]

[693 mm x 807 mm]

[717 mm x 834 mm]

Linear Configuration:

12¾" x 75¼"

14½" x 77¼"

15¾" x 78¼"

[323 mm x 1914 mm]

[369 mm x 1963 mm]

[398 mm x 1988 mm]

Load Capacity:

(rated at 16" Hg [-54 kPa] on clean, smooth, nonporous flat surfaces

)

Per-Pad:

125 lbs [56.5 kg]

150 lbs [68 kg]

175 lbs [80 kg]

Maximum:

500 lbs [225 kg]

600 lbs [270 kg]

700 lbs [320 kg]