Rev 11.3/1-17
3
MRTALPR4-DC: #35057
SPECIFICATIONS
Maximum Load Capacity: 600 lbs [270 kg] based on Maximum Per-Pad Load Capacity of 150 lbs [68 kg], rated at 16" Hg
[-54 kPa] on clean, smooth, nonporous flat surfaces
2
Power Source:
12 volts DC, 5 amps
Battery Capacity:
18 amp-hours
Tilt Capability:
Manual, 90°, with mechanical advantage that minimizes operator effort and automatic latching in
upright position
Rotation Capability:
Manual, 180°, with automatic latching at every 30° of revolution (when desired)
Vacuum Pump:
Diaphragm type, 2.5 SCFM [71 liters/minute] nominal airflow
Dual Vacuum System:
2 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).
Vacuum Reserve Tanks:
2 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:
2 dial gauges indicate current vacuum level in positive inches of Hg and negative kPa.
Vacuum Lift Light:
Green light is energized when vacuum is higher than the level required to lift the maximum load
weight (16" [-54 kPa]).
Low Vacuum Warning Buzzer: Maximum Alarm Volume = 103 dBA at 2 ft [60 cm]. While the lifter is powered up, an
audible alarm warns the operator whenever vacuum is not sufficient for lifting the maximum load
weight.
Options:
Available
with Remote Control System. This option features a radio transmitter and receiver that
can activate apply and release functions at distances up to 250 ft [76 m]. The system uses a 310-
320 MHz signal.
Available
with Pad Frame Extension Arms and Pad Frame Rocker Arms for installing roof panels (see
Spec Sheet 8-11). See separate instructions about these and other options.
Operating Elevation:
Maximum = 6000 ft [1828 m]
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.wpg.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
Standard with closed-cell foam rubber and/or replaceable sealing rings for rough or textured surfaces (see REPLACEMENTS
PARTS LIST).
2
Load Capacity is based on a friction coefficient of 1; see MAINTENANCE: V
ACUUM
P
AD
M
AINTENANCE
: Friction Coefficient for
additional information.
Description:
Designed for use with a crane or other hoisting equipment, the MRTALPR4-DC lifters employ
vacuum to hold a load for lifting, and they provide manual 180° rotation and mechanically assisted,
manual 90° tilt movements for load manipulation.
Model Number:
MRTALPR4FS625DC
MRTALPR4FS10TDC
Vacuum Pads:
1
(Four, with #60 filter screen)
6" x 25" [15 cm x 64 cm] nominal dimensions,
foam rubber (Model VPFS625),
spring-mounted with 1/2" [12 mm] travel
10" [25 cm] nominal diameter,
standard rubber (Model VPFS10T),
spring-mounted with 1/4" [7 mm]
Pad Spread:
(to outer edges)
Maximum:
37" x 92-1/2" [94 cm x 235 cm]
45¾" x 78¾" [116 cm x 200 cm]
Minimum:
20" x 92-1/2" [51 cm x 235 cm]
25¾" x 78¾" [65 cm x 200 cm]
Lifter Weight:
250 lbs [114 kg]
250 lbs [114 kg]
