Wood’s Powr-Grip MR1611LDCO - Manual (Page 28)

Rev 1.0/3-13 26 MR1611LDCO/DVS: #35048
4) Repeat steps 1-3 to verify the function of the second circuit of the vacuum system. Be sure
to introduce the leak at a vacuum pad belonging to the second circuit.
Correct any deficiency in the vacuum system before using the lifter. Contact Wood’s Powr-Grip
or an authorized dealer for assistance.
Release Function Test
The Dual Vacuum System employs an adjustable relief valve, in order to actuate the pressurized
release function. This relief valve has been set at the factory and normally does not need to be
adjusted. However, the release function should be tested each time the preceding V
ACUUM
T
EST
is performed, to make sure that the release mechanism is working correctly. Release the test
material as previously directed (see OPERATION: T
O
R
ELEASE THE
P
ADS FROM THE
L
OAD
) and monitor
the release mechanism for the following symptoms:
• The vacuum pads release for only one circuit of the vacuum system (ie, only 1 of the 2 small
vacuum gauges shows a decrease in vacuum).
• The vacuum pads release very slowly (ie, requiring more than 2 seconds per each pad in use).
• The lifter does not release at all (ie, both small vacuum gauges show full vacuum).
If any of these conditions is observed during release, the release mechanism is not functioning
correctly. Correct any deficiency before using the lifter. Contact Wood’s Powr-Grip or an
authorized dealer for assistance.
R
EMOTE
C
ONTROL
S
YSTEM
T
EST
If the lifter is equipped with a Remote Control System, perform this test in the environment
where the lifter is normally employed. Use the radio transmitter to activate each of the remote
functions. 21 Vary the location and distance of the transmitter in relation to the lifter, to ensure
that transmissions are effective in a variety of circumstances. This may require assistance from
someone near the lifter, to verify that functions are being performed as intended.
If the Remote Control System does not function correctly, review the following potential causes
of malfunction and correct them as directed:
• The battery for the radio transmitter may be worn out. Replace any expended battery (see
REPLACEMENT PARTS LIST).
• Metal or other electrically conductive surfaces may be causing interference between the radio
transmitter and radio receiver. Although the transmission signals often can bounce around
interfering surfaces, the signals do not travel through conductive walls. Reposition the
transmitter as necessary to transmit signals effectively.
If the preceding directions do not resolve a performance problem, repeat the test under different
conditions, to determine whether there is transmission interference in the work environment or
the Remote Control System is not functioning as intended. Correct any deficiency before
resuming normal use of the Remote Control System. If necessary, contact Wood’s Powr-Grip or
an authorized dealer for assistance.
21
Use a test material with appropriate surface characteristics (see INTENDED USE: L OAD C HARACTERISTICS ) to test the apply and
release functions.