Wood’s Powr-Grip MRTALP611LDC - Manual (Page 26)

Rev 10.0/5-14 24 MRTALP6-DC: #35056
CAUTION: Be sure to use appropriate cleaning methods for each type of electrical
component, as specified by codes and standards. Improper cleaning
can damage components.
• Keep a written record of all Periodic Inspections.
If any deficiency is detected during the inspection, correct it before using the lifter. If
necessary, return the lifter to Wood’s Powr-Grip or an authorized dealer for repair (see LIMITED
WARRANTY).
Infrequent Use
If a lifter is used less than 1 day in a 2-week period, perform the Periodic Inspection each time
before using the lifter .
T
ESTING
S
CHEDULE
Perform these tests when placing the lifter in service initially and each time following a repair or
modification . Correct any deficiency and retest before using the lifter.
Operational Tests
• Perform the V
ACUUM
T
EST
to follow.
• Test all features and functions of the lifter (see OPERATING FEATURES, OPERATION and
MAINTENANCE).
Load Test
Prove that the lifter can lift 100% of its Maximum Load Capacity (see SPECIFICATIONS), using an
actual load or an equivalent simulation. 15 Employ the following method to test with an actual
load:
1) Place a test load with appropriate L
OAD
C
HARACTERISTICS
(see INTENDED USE) on a stable
support. Make sure the load is oriented in the upright position. 16
2) Apply the vacuum pads to the load as previously directed.
3) After the vacuum pump stops running, place the lifter's power switch in the "OFF" position.
4) Raise the load a minimal distance, to assure that it is supported by the lifter.
5) Hold the load for 5 minutes. The load must not slip or fall during this time period. If it
does, conduct a V
ACUUM
T
EST
and inspect each vacuum pad as indicated under V
ACUUM
P
AD
M
AINTENANCE
: Inspection (see sections to follow). Correct any deficiency that is found and
retest the lifter.
Note: See MAINTENANCE topics to follow for additional directions about inspecting and testing
specific lifter components. Since the low vacuum warning buzzer is controlled by a vacuum
switch, consult the V
ACUUM
S
WITCH
A
DJUSTMENT
discussion for inspection, testing and adjustment
procedures.
15
ASME Standard B30.20 requires the lifter to be tested to 125% of its Load Capacity.
16
Flat Lifters are exempt from this requirement.