WOOD'S POWR-GRIP MANUAL ROTATOR 2800, Инструкция по эксплуатации

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Rev 0.0/7-12 23 MR1611LDCO/DVS: #35048
Dual Vacuum Circuit Test
Two vacuum system circuits allow the lifter to maintain the vacuum level in one circuit even if an
unexpected vacuum loss occurs in the other one. Verify the function of the circuits each time the
preceding V
ACUUM
T
EST
is performed and whenever a deficiency is suspected, as follows:
1) Clean the vacuum pads and apply the lifter to the test material as directed in the preceding
V
ACUUM
T
EST
.
2) After the vacuum pumps stop running, monitor the small vacuum gauges (located on the pad
frame) as a leak is introduced in one circuit. To introduce a leak, pull up on the edge of one
vacuum pad until the vacuum circuit begins to leak. The corresponding vacuum gauge should
indicate a loss of vacuum in that circuit.
3) As the vacuum level decreases in one circuit, continue to monitor the vacuum gauge for the
other circuit, to make sure that it maintains its original vacuum level.
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.