Wood’s Powr-Grip MRTALP611LDC - Manual (Page 35)

Rev 10.0/5-14 33 MRTALP6-DC: #35056
• n_3 = -422. This setting turns off the low vacuum warning buzzer, light and/or strobe light
and turns on the vacuum lift light, indicating that the lifter has already reached the
minimum vacuum level (see n_4). Setting n_3 must always be set above n_4.
• n_4 = -419. After the vacuum switch has turned off the vacuum pump(s) (see n_1) and
the vacuum system has lost significant vacuum, setting n_4 turns on the low vacuum
warning buzzer, light and/or strobe light and turns off the vacuum lift light. This signals a
loss of adequate vacuum to the lifter operator.
Note: Setting n_4 corresponds with the minimum vacuum level for lifting loads.
This
setting must not be lowered without first consulting Wood’s Powr-Grip, because
it may reduce the maximum lifting capacity.
3) Each vacuum switch must be locked after all adjustments have been made. Use the arrow
keys to access the locked mode (“LoC”) and press the “SET” button again.
4) Repeat steps 1-4 for the other vacuum switch, to ensure the settings are the same.