Wood’s Powr-Grip MR1611LDC - Manual (Page 16)

Rev 30.0/5-13 14 MR1611LDC: #35050
In order to be considered clearly audible, the alarm volume must exceed ambient noise by
at least 15 dBA at the operator position. 4 Since the Maximum Alarm Volume is 103 dBA,
ambient noise must not exceed 88 dBA under any circumstances. Furthermore, if ambient noise
measures 88 dBA, the alarm volume must be set to maximum and the operator must remain
within 2 ft [60 cm] of the warning buzzer, in order for it to be effective.
Confirming the Pad Frame Configuration
WARNING: Load Capacity of lifter varies, depending on pad frame configuration.
Make sure the pad frame has been assembled in the configuration that will provide optimal
support of the load while lifting (see ASSEMBLY: T
O
C
HANGE THE
P
AD
F
RAME
C
ONFIGURATION
). The
pad frame configuration selected must be appropriate both for the weight and for the dimensions
of the load to be lifted.
Preparing to Use the Optional Remote Control System
If the lifter is equipped with a Remote Control System, the operator can engage the lifter's apply
and release functions at distances up to 250' [76 m], provided there is a direct and clear view of
the lifter and its status indicators from the operator location (see MAINTENANCE: R
EMOTE
C ONTROL S YSTEM T EST ). When lifting a load from a remote location, the operator must monitor the
lifter at all times to make sure that it is functioning as intended. In addition, the operator must
exercise special care to ensure that the load is landed and supported correctly before releasing
the load (see A
BOUT THE
E
NABLE
S
WITCH AND
O
PTIONAL
S
TROBE
L
IGHT
and T
O
R
ELEASE THE
P
ADS FROM
THE
L
OAD
to follow).
The Remote Control System is designed with safeguards which can affect the use of more than
one radio controlled lifter in the vicinity. If transmissions from multiple transmitters on the same
frequency occur simultaneously, these safeguards prevent each lifter from responding until a
clear transmission with an appropriate code is received.
5 Nevertheless, radio controlled lifters
should be tested to ensure that each transmitter controls only one lifter. The buttons located on
the lifter function regardless of any radio transmissions in the vicinity.
The radio transmitter is also equipped with an emergency transmitter disconnect that prevents
the transmitter from sending any transmission. This button should not need to be used, but may
have to be reset if accidentally engaged. To reset, twist the button clockwise while allowing it to
spring outward to its normal position.
4
Consult CE Standard EN 457 for alternative ways to determine whether the alarm is clearly audible to operators.
5
Depending on how strong each transmitter’s signal is, a lifter also may respond intermittently in such cases. Intermittent
transmission generally would be noticed only when the operator tries to release a load, since this is the only situation requiring
transmitter buttons to be held.