Rev 19.3/9-18
18
VL411LDC: #35162
B
ATTERY
R
ECHARGE
Charge the battery whenever the battery gauge indicates diminished energy (see B
ATTERY
T
EST
preceding).
CAUTION: Make sure valve handle is in “release” position (power OFF).
Identify the input voltage marked on the battery charger, and plug it in to an appropriate power
source.
9
A ground fault circuit interrupter is necessary to reduce the risk of electrical shocks.
WARNING: Make sure power source is equipped with ground fault circuit
interrupter.
The power lamp (Ф) turns on, to indicate
that the charger is functioning. To
determine charging status, consult the six-
stage display on the charger. The battery is
ready for use at stage 3 and fully charged at
stage 5.
Normally, the battery should take no more
than 8 hours to charge completely.
10
If not,
check for the following conditions and
correct any deficiencies as directed:
• Power lamp (Ф) flashes: Charger is not connected to battery; reconnect charger (see
ASSEMBLY).
• Error lamp (!) turns on: Battery leads connected to the wrong poles; reverse battery leads.
• Error lamp (!) turns on and charging stops at stage 1 or stage 4: Battery is no longer
functioning; replace battery (see REPLACEMENT PARTS LIST).
Be sure to unplug the charger and test the battery energy again before operating the lifter (see
B
ATTERY
T
EST
preceding).
V
ACUUM
P
AD
M
AINTENANCE
Friction Coefficient
The friction coefficient represents the lifter's ability to resist load slippage when the load is
oriented in any position except horizontal. If the contact surfaces of either the load or the
vacuum pads are not clean, dry and in good condition, slippage is more likely to occur.
The Load Capacity of most Powr-Grip lifters is based on a friction coefficient of 1 (only Flat Lifters
are exempt from this requirement). However, a vacuum pad's ability to maintain this friction
coefficient is reduced by factors such as contamination, wear, age and exposure to sunlight, as
well as the condition of the load's contact surface (see INTENDED USE: L
OAD
C
HARACTERISTICS
).
Pads that have surface contamination must be thoroughly cleaned (see Cleaning discussion to
follow). Over time, the rubber in a pad may experience hardening or leaching of chemicals,
9
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.
10
The charger is designed to automatically sense the energy level of the battery and reduce the charging rate when the battery
is fully charged. Accordingly, the charger does not need to be unplugged until the lifter is going to be used again.
Summary of Contents for VL411LDC
Page 2: ......
Page 30: ...Rev 19 3 9 18 28 VL411LDC 35162...
Page 31: ...Rev 19 3 9 18 29 VL411LDC 35162...
Page 32: ...Rev 19 3 9 18 30 VL411LDC 35162...
