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Ift and, Ove the, Interpreting the warning buzzer and lift light – Wood’s Powr-Grip P11104DC2 User Manual

Page 20: Monitoring vacuum indicators

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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.

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