WPG P110C04DC, Operating Instructions Manual

Page: 24 / 36

P1-DC: #35111 Rev 29.0/11-19 22
T
ESTING
Perform the following test to determine whether or not a load surface is too porous or rough:
Lifter/Load Compatibility Test
1
1) Make sure the vacuum generating system is functioning correctly (see “Vacuum Test” on
page 23).
2) Thoroughly clean the load surface and the vacuum pads (see “Pad Cleaning” on
page 26).
2
3) Place the load in the upright position on a stable support.
3
4) Attach the vacuum pads to the load as previously directed.
5) After the vacuum pump stops running, disconnect the battery connector (see “A
FTER
U
SING THE
L
IFTER
” on page 19).
4
6)
Take precautions in case
load should fall during test.
Raise the load a minimal distance, to make sure it
is supported by the lifter.
7) Watch each vacuum gauge: Starting from a
vacuum level of 16" Hg [-54 kPa], the lifter must maintain a vacuum level greater than
12" Hg [-41 kPa] for 5 minutes.
5
If not, lifting this load requires additional precautions
(eg, a load sling). Contact WPG for more information.
8) Lower the load after 5 minutes or before the vacuum level diminishes to 12" Hg [-41 kPa].
1..... The “Pad-to-Load Friction Coefficient” can affect the outcome of this test (see page 25).
2..... Contaminated loads can cause the vacuum pump to run frequently or continuously. Since excessive pumping quickly reduces battery energy,
clean the load whenever possible.
3..... For Flat Lifters, place the load in the flat position.
4..... Move the valve handle to the “release” position (power off) before reconnecting the battery.
5..... Under CE requirements, the lifter must maintain a vacuum level greater than 8" [-27 kPa] .
INSPECTIONS AND TESTS