Wood’s Powr-Grip P11104DC2 - Manual (Page 20)

Rev 0.3/11-13 18 P1-DC2: #35112
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, so that they
can be monitored 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.