Wood’s Powr-Grip PCFT2SA47 - Manual (Page 30)

Rev 0.0/11-13 28 P2-DC2: #35114
3) After the vacuum pumps stop running, place the lifter's power switches 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
: Pad Inspection (see sections to follow). Correct any deficiency that is found and
retest the lifter.
B
ATTERY
T
EST
A battery gauge enables you to evaluate whether the corresponding
battery has adequate energy for lifting. Check the energy level of both
batteries 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). 21
Never use lifter if battery energy is lower than 50% of
capacity (only red lights illuminated).
While the power switch for a pad channel is in the ON ( ) position, the
battery gauge automatically monitors battery energy (provided that the pad channel is not in
stand-by mode).
22
While the power switch is in the OFF ( ) position (or the pad channel is in stand-by mode), the
battery energy can be checked manually using the battery test switch. 23
Note: If a battery loses power, the power loss warning buzzer will sound an alarm (see P
OWER
L OSS W ARNING B UZZER T EST to follow).
B
ATTERY
R
ECHARGE
Charge a battery whenever the corresponding battery gauge indicates diminished energy (see
B
ATTERY
T
EST
preceding). Caution: Make sure the power switch for the pad channel is in
the OFF ( ) position.
Identify the input voltage marked on the battery charger, and plug it in to an appropriate power
source. 24 A ground fault circuit interrupter is necessary to reduce the risk of electrical shocks.
Make sure power source is equipped with ground fault circuit interrupter.
21
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.
22
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.
23
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.
24
Any external power supply must conform to all applicable local codes. Caution: Do not operate the lifter while the
charger is connected to an AC power source, since this could result in permanent damage to the charger.