Wood’s Powr-Grip MR1611LDC - Manual (Page 27)

Rev 30.0/5-13 25 MR1611LDC: #35050
vacuum switch, consult the V
ACUUM
S
WITCH
A
DJUSTMENT
discussion for inspection, testing and
adjustment procedures.
M
AINTENANCE
S
CHEDULE
Unless specified elsewhere in this INSTRUCTIONS manual, the lifter does not require
maintenance on a routine basis. Instead, maintenance must be performed whenever a
deficiency is indicated by routine inspections or tests. Any maintenance warranted must be
performed before resuming normal operation of the lifter.
B
ATTERY
T
EST
The lifter is equipped with a battery gauge to help the operator evaluate
whether the battery has adequate energy for lifting. Factors such as the
condition of the battery, the time required to execute a lift, and the
porosity of the load combine to determine how much battery energy is
needed.
It is the operator’s responsibility to evaluate these
conditions and to make sure the battery has sufficient energy to
complete a lift safely. Check the battery energy before every lift and
also at the end of each day's use, to decide whether a charge is needed
(see B
ATTERY
R
ECHARGE
to follow). 14 Never use the lifter when battery
energy registers lower than 50% (that is, when only red lights are illuminated), regardless of the
estimated energy requirement.
WARNING: Never use lifter if battery energy is lower than 50% of capacity.
While the lifter's power switch is in the ON ( ) position and the vacuum system is in stand-by
mode (see OPERATION: T
O
R
ELEASE THE
P
ADS FROM THE
L
OAD
), the operator must press the battery
test button for a few moments to make the energy level register on the battery gauge. This
enables the operator to check the battery energy while the lifter is powered up but
not attached
to a load.
While the lifter's power switch is in the ON ( ) position and the vacuum system is in apply
mode (see OPERATION: T
O
A
PPLY THE
P
ADS TO A
L
OAD
), the battery gauge automatically monitors
the energy level of the battery. This enables the operator to check the battery energy while the
lifter is powered up and attached to a load. However, the battery gauge shuts off temporarily
while the vacuum pump is running, to prevent an inaccurate reading. When the pumping cycle is
completed, the battery gauge requires a few moments to stabilize before it displays an accurate
energy reading again.
Note: If the lifter has not been used since the battery was charged, the battery gauge may
falsely indicate an energy level that is higher than actual, due to a “surface charge” on the
battery. After the pump runs for approximately one minute, the surface charge dissipates,
allowing the operator to take an accurate energy reading.
14
The battery charger must be disconnected from its AC power source in order to test the battery energy; otherwise, the energy
reading on the battery gauge would not be accurate.