Wood’s Powr-Grip MRT49DC2 - Manual (Page 23)

Rev 0.5/4-14 21 MRT4-DC2: #35071
T
O
L
IFT AND
M
OVE THE
L
OAD
Lift bar must be oriented vertically to lift load (see T
O
T
ILT
).
Interpreting the Warning Buzzer and Lift Light
A lifter's Maximum Load Capacity is rated at a vacuum
level of 16" Hg [-54 kPa] (see SPECIFICATIONS). After
the lifter has attained this level, the low vacuum warning buzzer
turns
off and the green vacuum lift light turns on automatically, to
signal that the lifter is ready to lift the maximum load weight. As
vacuum continues to increase, the vacuum pump also turns off, to
conserve battery energy.
Never attempt to lift load while warning buzzer is
sounding alarm.
Never attempt to lift load unless green lift light is
illuminated.
If you attempt to lift the load while the alarm is sounding or
before the lift light is illuminated, this could result in a load release and possible injury.
Monitoring Vacuum Indicators
The vacuum lift light and both vacuum gauges must remain completely visible to the operator
throughout the entire lift.
Keep vacuum indicators visible throughout entire lift.
If the vacuum system experiences leakage while
the lifter is attached to the load, the vacuum
pump turns on and off automatically, as required
to maintain sufficient vacuum. Normally, such
intermittent cycling of the pump is no cause for
alarm.
However, if vacuum decreases significantly, the
lift light turns off and the low vacuum warning
buzzer turns on , to warn the operator. If this
occurs while you are lifting a load, move away
and stay clear of the load until it can be lowered
to the ground or a stable support.
Stay clear of any suspended load while indicators warn of low vacuum.
Discontinue lifter use until the cause of the vacuum loss can be determined. If the pump runs at
intervals of ten minutes or less while the lifter is attached to clean, smooth, nonporous materials,
the leakage is likely to be in the vacuum system. In this event, perform the V
ACUUM T EST (see
MAINTENANCE) and inspect the vacuum pads for damage (see MAINTENANCE: V
ACUUM
P
AD
M
AINTENANCE
: Pad Inspection). If the vacuum loss cannot be remedied immediately, perform
inspection and maintenance as needed to identify and correct any deficiency before resuming
normal operation of the lifter.