Pytes HV48100 User Manual page 8

Ensure that bolts are tightened with a torque tool and marked in red and blue after double
checking. Installation personnel mark tightened bolts in blue. Quality inspection personnel
confirm that the bolts are tightened and then mark them in red. (The marks must cross the
edges of the bolts.)
After the installation is complete, ensure that protective cases, insulation tubes, and other
necessary items for all electrical components are in position to avoid electric shocks.
If the equipment has multiple inputs, disconnect all the inputs before operating the
equipment.
Before maintaining a downstream electrical or power distribution device, turn off the output
switch on the power supply equipment.
During equipment maintenance, attach "Do not switch on" labels near the upstream and
downstream switches or circuit breakers as well as warning signs to prevent accidental
connection. The equipment can be powered on only after troubleshooting is complete.
If fault diagnosis and troubleshooting need to be performed after power-off, take the
following safety measures: Disconnect the power supply. Check whether the equipment is
live.
Install a ground cable. Hang warning signs and set up fences.
Check equipment connections periodically, ensuring that all screws are securely tightened.
Only qualified professionals can replace a damaged cable.
Do not scrawl, damage, or block any labels or nameplates on the equipment. Promptly
replace labels that have worn out.
Do not use solvents such as water, alcohol, or oil to clean electrical components inside or
outside of the equipment.
Grounding
Ensure that the grounding impedance of the equipment complies with local electrical
standards.
Ensure that the equipment is connected permanently to the protective ground. Before
operating the equipment, check its electrical connection to ensure that it is reliably grounded.
Do not work on the equipment in the absence of a properly installed ground conductor.
Do not damage the ground conductor.
Ground the protective ground terminal on the equipment enclosure before connecting the
power supply; otherwise, electric shock as a result of touch current may occur.
Cabling Requirements
When selecting, installing, and routing cables, follow local safety regulations and rules.
When routing power cables, ensure that there is no coiling or twisting. Do not join or weld
power cables. If necessary, use a longer cable.
Ensure that all cables are properly connected and insulated and meet specifications.
Ensure that the slots and holes for routing cables are free from sharp edges, and that the
positions where cables are routed through pipes or cable holes are equipped with cushion
materials to prevent the cables from being damaged by sharp edges or burrs.
If a cable is routed into the cabinet from the top, bend the cable in a U shape outside the
cabinet and then route it into the cabinet.
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