Wood’s Powr-Grip MR1611LDCO User Manual

Page 16

Rev 1.0/3-13

MR1611LDCO/DVS: #35048

Sealing the Pads against the Load

The apply/release switch is located on the movable control pendant. The movable control

pendant allows the vacuum controls to be moved away from the lifter, so that the operator can
control airflow at a distance equal to the length of the pendant cord.

WARNING: Do not disconnect control pendant during lifter operation.

The movable control pendant is not intended to be disconnected during lifter operation.

Disconnecting the control pendant's electrical connector is likely to result in a load release and
injury to the operator or others nearby.
Turn the apply/release switch to the “APPLY” position (clockwise) to make sure the apply

function is activated.

WARNING: Keep apply/release switch in “APPLY” position throughout lift.

Alternatively, if the lifter is equipped with a Remote Control System, press an apply button on

either the radio transmitter or the lifter (see remote control enclosure in OPERATING FEATURES),

to make sure the apply function is activated.
This energizes the vacuum pump, causing air to be drawn immediately at the vacuum pads. The

low vacuum warning buzzer also sounds an alarm until the lifter attains sufficient vacuum to lift
the maximum load weight (see T

IFT AND

OVE THE

OAD

: Load Capacity and Lift Light to follow).

Press the lifter onto the load until all the pads seal against it. The lifter must remain in the apply
mode throughout the entire lift.
Note: If a vacuum pad has been lying against a hard object (as during shipping), it may be

slightly distorted. Although initially it may be difficult to apply the pad to a load, this condition
should correct itself with continued use.

Reading the Vacuum Gauges

The lifter is equipped with 3 vacuum gauges: 2

small

vacuum gauges are located on the pad

frame, to indicate the current vacuum level in each circuit of the lifter's vacuum system (see dual

vacuum system valve assembly in OPERATING FEATURES). A third,

large

vacuum gauge is

located on the lift bar. So long as the air filters on the pad frame are maintained properly (see
B

EFORE

SING THE

IFTER

: Performing Inspections and Tests preceding), the large vacuum gauge

indicates the lower of the vacuum levels existing in the 2 circuits.
Each vacuum gauge registers vacuum in the same way: The

green

range indicates vacuum

levels sufficient for lifting the maximum load weight, whereas the

red

range indicates vacuum

levels that are

not

sufficient for lifting the maximum load weight. The gauge needle should

show a sudden surge in vacuum as the vacuum pads seal against the load. If it takes more than

5 seconds for the vacuum level to reach 5" Hg [-17 kPa] on a vacuum gauge, press on any pad
that has not yet sealed.