Dell Unity XT 480 Unity All Flash and Unity Hybrid Unity 480/F Unity 680/F Uni - Page 106

Hardware acclimation times, Removing, installing, or storing replaceable units

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● If you must move around the room or touch other surfaces before installing a unit, first place the unit back in the antistatic bag. When you are ready again to install the unit, repeat these procedures. Hardware acclimation times Units must acclimate to the operating environment before applying power. This requires the unpackaged system or component to reside in the operating environment for up to 16 hours in order to thermally stabilize and prevent condensation. Transit/storage environment Temperature Humidity Nominal Nominal 68-72°F (20-22°C) 40-55% RH Operating environment temperature Acclimation time Nominal 68-72°F (20-22°C) 40-55% RH 0-1 hour Cold

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●
If you must move around the room or touch other surfaces before installing a unit, first place the unit back in the antistatic
bag. When you are ready again to install the unit, repeat these procedures.
Hardware acclimation times
Units must acclimate to the operating environment before applying power. This requires the unpackaged system or component
to reside in the operating environment for up to 16 hours in order to thermally stabilize and prevent condensation.
Transit/storage environment
Operating environment temperature
Acclimation time
Temperature
Humidity
Nominal
68-72°F (20-22°C)
Nominal
40-55% RH
Nominal 68-72°F (20-22°C)
40-55% RH
0-1 hour
Cold
<68°F (20°C)
Dry
<30% RH
<86°F (30°C)
4 hours
Cold
<68°F (20°C)
Damp
≥30% RH
<86°F (30°C)
4 hours
Hot
>72°F (22°C)
Dry
<30% RH
<86°F (30°C)
4 hours
Hot
>72°F (22°C)
Humid 30-45%
RH
<86°F (30°C)
4 hours
Humid 45-60%
RH
<86°F (30°C)
8 hours
Humid ≥60% RH
<86°F (30°C)
16 hours
Unknown
<86°F (30°C)
16 hours
●
If there are signs of condensation after the recommended acclimation time has passed, allow an additional 8 hours to
stabilize.
●
Systems and components must not experience changes in temperature and humidity that are likely to cause condensation
to form on or in that system or component. Do not exceed the shipping and storage temperature gradient of 45°F/hr
(25°C/hr).
Removing, installing, or storing replaceable units
Use the following precautions when removing, handling, or storing replaceable units:
CAUTION:
Some replaceable units have the majority of their weight in the rear of the component. Ensure that
the back end of the replaceable unit is supported while installing or removing it. Dropping a replaceable unit
could result in personal injury or damage to the equipment.
NOTE:
For a module that must be installed into a slot in an enclosure, examine the rear connectors on the module for any
damage before attempting its installation.
CAUTION:
A sudden jar, drop, or even a moderate vibration can permanently damage some sensitive replaceable
units.
●
Do not remove a faulted replaceable unit until you have the replacement available.
●
When handling replaceable units, avoid electrostatic discharge (ESD) by wearing ESD anti-static gloves or an ESD wristband
with a strap. For additional information, refer to
Avoiding electrostatic discharge (ESD) damage
.
●
Avoid touching any exposed electronic components and circuits on the replaceable unit.
●
Never use excessive force to remove or install a replaceable unit. Take time to read the instructions carefully.
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Safety precautions for handling replaceable units