Woods-powr-grip VLPL411LAC User Manual download pdf (Page 16)

Rev 15.0/12-12 14 VLPL4-AC: #35165

MAINTENANCE SCHEDULE

Unless specified elsewhere in this

INSTRUCTIONS

manual, the lifter does not require

maintenance on a routine basis. Instead, maintenance must be performed whenever a

deficiency is indicated by routine inspections or tests. Any maintenance warranted must be

performed before resuming normal operation of the lifter.

VACUUM PAD MAINTENANCE

Friction Coefficient

The friction coefficient represents the lifter's ability to resist load slippage when the load is

oriented in any position except horizontal. If the contact surfaces of either the load or the

vacuum pads are not clean, dry and in good condition, slippage is more likely to occur.

The Load Capacity of most Powr-Grip lifters is based on a friction coefficient of 1 (only Flat Lifters

are exempt from this requirement). However, a vacuum pad's ability to maintain this friction

coefficient is reduced by factors such as contamination, wear, age and exposure to sunlight, as

well as the condition of the load's contact surface (see INTENDED USE: LOAD CHARACTERISTICS).

Pads that have surface contamination must be thoroughly cleaned (see Cleaning discussion to

follow). Over time, the rubber in a pad may experience hardening or leaching of chemicals,

resulting in stiffness or surface glaze. Pads that exhibit wear, stiffness or glaze must be replaced.

In addition, all pads should be replaced on a regular basis, preferably after no more than 2 years,

to ensure that the friction coefficient is not compromised. If necessary, contact your dealer or

Wood's Powr-Grip for more information.

Inspection

Inspect each vacuum pad for the following deficiencies routinely, as directed in the preceding

INSPECTION and TESTING SCHEDULES. Correct any deficiency before using the lifter.

• Contaminates on the pad face or sealing edges: Soil build-up can prevent pads from sealing

adequately or reduce the friction coefficient (see discussion preceding). Follow the directions

to clean pads as necessary (see discussion to follow).

• Filter screen missing from pad face: This screen helps prevent debris from plugging the

vacuum hose and the air filter. Replace any missing screen immediately (see REPLACEMENT

PARTS LIST).

• Nicks, cuts or abrasions in sealing edges: Pad damage can reduce the lifting capacity of the

lifter. Replace any damaged pad immediately (see REPLACEMENT PARTS LIST).

WARNING: Replace vacuum pad if sealing edge has any nicks, cuts or abrasions.

• Wear, stiffness or glaze: See Friction Coefficient preceding. Replace any pad that exhibits

wear, stiffness or glaze (see REPLACEMENT PARTS LIST).

Cleaning

Regularly clean the face of each vacuum pad to remove oil, dust and any other contaminates.

Acceptable cleaning agents include soapy water and other mild cleansers. Do

not

use solvents,

petroleum-based products (including kerosene, gasoline and diesel fuel) or any harsh chemicals

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 22 23

Comments to this Manuals

No comments

Woods-powr-grip VLPL411LAC User Manual Page 16

Comments to this Manuals

Related products and manuals for Hoist Woods-powr-grip VLPL411LAC