Wood’s Powr-Grip EO1DCB - Manual (Page 9)

Rev 10.0/9-13 7 EO1DCB: #35191AFT
Infrequent Use
If a DC Vacuum Back-Up System is used less than 1 day in a 2-week period, perform the Periodic
Inspection each time before using the Back-Up System .
T
ESTING
S
CHEDULE
Perform these tests when installing the DC Vacuum Back-Up System initially and each time
following a repair or modification . Correct any deficiency and retest before using the Back-Up
System.
• Perform a vacuum test as directed in the lifter's instruction manual.
• Perform the B
ATTERY
T
EST
and B
ATTERY
C
HARGER
T
EST
to follow.
• Perform the B
ACK
-U
P
F
UNCTION
T
EST
to follow.
Note: See MAINTENANCE topics to follow for additional directions about inspecting and testing
specific Back-Up System components.
M
AINTENANCE
S
CHEDULE
Although the DC Vacuum Back-Up System does not require maintenance on a routine basis,
maintenance must be performed whenever a deficiency is indicated by routine inspections or
tests. Any maintenance warranted must be performed before resuming normal use of the Back-
Up System.
B
ACK
-U
P
F
UNCTION
T
EST
Test the back-up function of the DC Vacuum Back-Up System routinely, as directed in the
preceding I
NSPECTION
and T
ESTING
S
CHEDULES
.
1) Attach the vacuum lifter to a test surface following the lifter’s operating instructions. 1
2) While keeping the Back-Up System activated (see OPERATION: To Use the Back-Up System),
disconnect the power source to the lifter’s primary vacuum generating system.
3) Intentionally create a leak in the primary vacuum system (eg, break the seal between one or
more vacuum pads and the test surface).
4) Monitor the lifter's vacuum gauge: The Back-Up System’s vacuum pump should engage
before vacuum decreases to a level that is lower than the minimum level specified for the
lifter's load capacity (consult lifter specifications).
If the Back-Up System does not function correctly, adjust the vacuum switch as directed in the
V ACUUM S WITCH A DJUSTMENT to follow. If the Back-Up System still fails to function normally,
correct any deficiency in the Back-Up System before resuming normal use. Contact Wood’s
Powr-Grip or an authorized dealer for assistance.
1
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 test.