Wood’s Powr-Grip MT10FS10TDC - Manual (Page 25)

Rev 30.0/5-14 23 MT-FS10TDC: #35091
V
ACUUM
T
EST
Test the vacuum system for leakage routinely, as directed in the preceding I
NSPECTION
and
T
ESTING
S
CHEDULES
.
1) Clean the face of each vacuum pad as previously directed (see V
ACUUM
P
AD
M
AINTENANCE
:
Cleaning).
2) Apply the lifter to a clean, smooth, nonporous surface. The surface should be flat or possess
no more curvature than the lifter is designed for (if any). 17 When the pumping cycle is
completed, the vacuum level should register above 16" Hg [-54 kPa] on the vacuum gauge (if
not, see V
ACUUM
S
WITCH
A
DJUSTMENT
to follow).
3) After the vacuum pump stops running, leave the pads attached to the surface and interrupt
the energy flow from the battery: Disconnect the electrical connector uniting the battery to
the vacuum generating system.
Note: After the vacuum test is completed, move the valve handle to the “RELEASE” position
(power off ) before reconnecting the battery.
4) Monitor the vacuum gauge: The vacuum level should not decrease by more than 4" Hg [-14
kPa] in 10 minutes.
WARNING: If lifter fails vacuum test, discontinue use immediately.
Correct any deficiency in the vacuum system before using the lifter. Contact Wood’s Powr-Grip
or an authorized dealer for assistance.
17
Any test material used must be fully and independently supported, and capable of bearing the lifter’s weight. Do not use the
lifter to lift the test material during the vacuum test.
T
O
R
EPLACE
S
EALING RING INSERT IN
V
ACUUM
P
AD
1) Remove the old sealing ring insert: Hold the vacuum pad firmly and pull the ring insert out
from the mounting groove. Discard any damaged ring insert.
2) Install a new sealing ring insert (see REPLACEMENT PARTS LIST): Push the ring insert into
the mounting groove so that the insert's base (flat side) fits flush against the bottom of the
groove. Begin by placing the inside edge of the ring insert against the inside edge of the
mounting groove. Then push gently and firmly on the outside edge of the ring insert until it
seats completely into the mounting groove. Work your way around the entire ring insert,
repeating this process until the entire ring is seated in the mounting groove.
3) Make sure that the sealing ring is secure and fully inserted into the mounting groove around
the entire perimeter of the vacuum pad.
Note: If the ring insert ever comes partially or entirely out of the mounting groove, inspect the
ring insert for damage and reinstall an undamaged ring insert according to preceding directions.