Wood’s Powr-Grip MRTA811LDCO - Manual (Page 5)

Rev 0.0/6-14 3 MRTA8-DCO-DVS: #35077
SPECIFICATIONS
Description: Designed for use with a crane or other hoisting equipment, MRTA8-DCO lifters employ vacuum
to hold a load for lifting, and they provide manual 360° rotation and mechanically assisted,
manual 90° tilt movements for load manipulation.
Model Number: MRTA8HV11DCO MRTA811LDCO
Vacuum Pads: 10" [25 cm] nom. diameter,
lipped (Model HV11)
11" [28 cm] nom. diameter,
lipped (Model G3370)
(Eight, standard rubber, spring-mounted for ¼" [7 mm] travel, with #60 filter screen)
Pad Spread: 1 (to outer edges)
Length - Maximum: 122 1/4" [3105 mm] 123 1/4" [3130 mm]
- Minimum: 50" [1270 mm] 51" [1295 mm]
Width - Maximum: 73 1/2" [1867 mm] 74 1/2" [1892 mm]
- Minimum: 12 3/4" [327 mm] 13 3/4" [352 mm]
Lifter Weight: 313 lbs [142 kg] 309 lbs [140 kg]
Load Capacity (rated at 16" Hg [-54 kPa] on clean, smooth, nonporous flat surfaces 2 )
Per-Pad: 150 lbs [68.5 kg] 175 lbs [79.5 kg]
Maximum: 1200 lbs [545 kg] 1400 lbs [635 kg]
Power Source: 12 volts DC, 26 amps
Battery Capacity: 28 amp-hours
Tilt Capability: Manual, 90°, with four-bar tilt linkage that minimizes operator effort and automatically holds a
correctly attached load in the upright or flat position.
Rotation Capability: Manual, 360°, with automatic latching (when desired).
Vacuum Pump: Diaphragm type, 3 SCFM [85 liters/minute] nominal airflow
Vacuum Reserve Tanks: 3 vacuum reservoirs help prevent immediate vacuum loss in case of power failure and extend
battery life by reducing pump cycles required to maintain vacuum.
Vacuum Gauges: 3 dial gauges indicate 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.
Options: Model EO10DVS - Dual Vacuum System. Two vacuum system circuits allow the lifter to
maintain the vacuum level in one circuit even if an unexpected vacuum loss occurs in the other
one (eg, due to load breakage).
Available with Model LB8TLO - Tilt Lock. When engaged, this option ensures that the upright
or flat orientation of the load is not compromised by accidental or unexpected forces.
See separate instructions about other options.
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 L 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.
1
To identify the Pad Spread for any specific pad frame configuration, see the illustrations in ASSEMBLY: T
O
C
HANGE THE
P
AD
F
RAME
C
ONFIGURATION
.
2
Load Capacity is based on a friction coefficient of 1; see MAINTENANCE: V ACUUM P AD M AINTENANCE : Friction Coefficient for
additional information.