Telecrane F21-2D, Manual

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- Power should be shut off to the crane or equipment before any maintenance
begins, unless absolutely required for troubleshooting the unit. When the power
is on, use extreme caution. High voltage or unexpected movement could cause
death or severe injury.
- Only certified maintenance personnel should attempt a repair more involved than
the swapping of printed circuit boards. Improper repair can compromise the built-
in safety features and cause unexpected operation and damage.
- This product uses two AA alkaline batteries. When replacing batteries, both must
be replaced at the same time.
- ITL does not recommend use of nickel-cadmium or nickel-metal-hydride batteries
due to voltage characteristics that cause a sudden loss of power when discharged.
They also have less capacity than alkaline batteries and therefore will not last as
long.
4.0 Trouble Shooting Common Mistakes In Installation:
−
Receiver dead: Is 120 volt AC applied between X1 and X2 wires? On the F21
models these are the BLACK and BROWN wires; and on the F24 models they are
wires 1 and 2. You must provide both the hot and the neutral sides of the control
transformer secondary to power the unit.
−
Does the equipment have a mainline contactor : Not all equipment has a
mainline contactor. The best way to determine if your equipment has a mainline
contactor is to check whether there is a START and STOP on the corded pendant.
If the equipment does not have a mainline contactor then these wires do not have
to be connected. On the F21 models this wire is the MAIN wire and on the F24
models this is MAIN-IN (3) and MAIN-OUT (4). The MAIN wire on the F21
models will be hot when mainline is on; this wire has to be terminated with a wire
nut or isolated.
−
Relays close but there is no movement from the crane: Are the COMMON
wires hooked up properly? The receivers have “dry” contacts. Even though X1
and X2 have been applied to power the receiver, you still need to apply power to
the common side of the relay contacts in order to get power to your contactors.
On the F21 models the COM wire on the diagram is separate from the power
wires and on the F24 models each COM wire is completely isolated from the
others as well as the power wires. In most cranes, the COM wires will be
connected to the X1 supply.
If you have any problems or questions not covered above, please call ITL at 1-800-382-3558.
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