Street Crane ZX6, Installation, Operation And Maintenance Instructions

Page: 46 / 103

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© Street Crane Co Ltd
Page 46 of 103 Ref: D3256 rev. B
4.5 LEAVING THE CRANE / HOIST UNATTENDED
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It is essential that a crane / hoist operator is present when a load is suspended from a hoist.
When the crane / hoist are left unattended, even for a short period, it is essential that: ‐
1. The crane / hoist is parked away from any local sources of heat, fumes, condensation or damp
conditions.
2. Any slings or lifting tackle have been removed from the hook and the hook is raised to a safe position.
3. The Remote control transmitter (where fitted)

Should always be kept in the authorised storage place when not required for immediate use.

The Emergency Stop and/or transmitter key must always be turned OFF when not in use and
the key removed.

For short periods, the operator should either retain the transmitter in their possession or
remove the key from its key lock switch and retain the key in their possession.
4. The Pendant control : ‐

Should be left in a safe location.

Must always be turned OFF by pressing the emergency stop button.
5. The Joystick control (‘ride ‐ on’ or cab) : ‐

The cab must be parked at the authorised access / egress point.

Must always be turned OFF by pressing the emergency stop and removing the key. For short
periods, the operator should either retain the key in their possession or for longer periods, the
key should be placed at the authorised storage point.
6. For long periods and for out ‐ of ‐ service conditions, switch the mains isolator to the OFF position.
7. For outdoor cranes / hoists, attach the storm anchors.
4.6 POWER FAILURE
The appointed person should establish a safe operating procedure in the event of a power failure. If the
appointed person does not have such a procedure the following is recommended: ‐
1. Switch off the power supply to the crane / hoist at the main isolator until the electrical supply is
restored.
2. If a load is suspended from the hoist, fence off a safe area immediately below / around the load and
clear all personnel from that area.
3. A load left suspended in mid ‐ air is considered to be a hazard it should be lowered to the floor using
the hand brake release lever.

Fence off and clear all personnel from the area under the load.

Follow the appropriate Health and Safety regulations and procedures.

Obtain the necessary authorisation / permit for access to the hoist brake.

Carefully lower load to the floor using the hand release on the hoist brake.
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The load must be lowered under strict control only a few inches at a time before re ‐ applying
the brake. Serious damage and subsequent failure, of the gearbox may result if the load is
allowed to ‘run away’.

When load is firmly supported at ground level, re ‐ apply the brake mechanism.
When the electrical supply is restored, re ‐ establish the crane power supply and carry out the daily pre ‐ use
inspections in section 5.4.