Wood’s Powr-Grip P11104DC2 - Manual (Page 30)

Rev 0.3/11-13 28 P1-DC2: #35112
P
OWER
L
OSS
W
ARNING
B
UZZER
T
EST
The power loss warning buzzer is powered by an independent battery, which can be tested while
the lifter is not running or attached to a load: Press the battery test switch as shown and listen
for the alarm. If the alarm does not sound, the battery must be replaced. Press the power loss
warning battery holder inward, causing it to release, and slide the battery tray out as shown.
Install a new 9-volt battery according to the polarity markings and retest the warning buzzer.
V
ACUUM
P
AD
M
AINTENANCE
Pad to Load Friction Coefficient
The friction coefficient represents the lifter's ability to resist load slippage (Note: Flat
lifters are exempt). The Maximum Load Capacity assumes a friction coefficient of 1.0 (see
SPECIFICATIONS). This rating is based on testing of clean, new, standard rubber vacuum pads
on clean, dry, regular glass. If the lifter is used under other conditions, a qualified person must
first determine the effective lifting capacity.
Exposure to heat, UV light or chemicals can cause vacuum pads to deteriorate. Standard rubber
pads should be replaced on a regular basis (at least every 2 years), to prevent deterioration of
the friction coefficient.
Pad Inspection
Inspect each vacuum pad for the following deficiencies routinely
(see preceding I
NSPECTION
and T
ESTING
S
CHEDULES
), and correct
them before using the lifter.
• Contaminates on the pad face (1) or sealing edges (2) (see Pad
Cleaning discussion to follow).
• Filter screen (3) missing from pad face (see REPLACEMENT
PARTS LIST).
• Nicks, cuts or abrasions in sealing edges of vacuum pad (see
REPLACEMENT PARTS LIST).
Replace vacuum pad if sealing edge has any nicks,
cuts or abrasions.
• Wear, stiffness or glaze of vacuum pad (see REPLACEMENT
PARTS LIST).
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