Chapter 2.
3
Site Preparation
The appliance should be installed in a rack housed in a dry, clean, well-ventilated, and temperature-controlled
environment.
• The site should be as dust-free as possible, because dust can clog air intake vents and filters, reducing the
efficiency of the appliance cooling system.
• Maintain ambient airflow for normal appliance operation. If the airflow is blocked or restricted, or if the intake
air is too warm, the appliance might overheat, causing the appliance temperature monitor to power off the
appliance to protect the hardware components.
The MWS1000 environmental requirements are:
• Ambient temperature for normal operation: 41°F to 104°F (5°C to 40°C)
• Ambient temperature for storage: -40°F to 158°F (-40°C to 70°C)
• Relative humidity, operating: 8% to 90% non-condensing
• Relative humidity, storage: 5% to 95% non-condensing
• Maximum operating altitude: 10,000 feet (3000 m)
2.1. Clearance Requirements for Airflow and Hardware
Maintenance for MWS1000
When planning the installation site, allow sufficient clearance around the rack. For the cooling system to
function properly, the airflow around the chassis must be unrestricted.
• Allow at least 6 in. (15 cm) of clearance on the side between devices that have fans or blowers installed.
• Allow 2.8 in. (7 cm) between the side of the chassis and any non-heat-producing surface such as a wall.
• Ensure that the airflow vents in the front and rear panels remain open and uncovered for proper cooling.
• For service personnel to remove and install hardware components, there must be adequate space at the
front and back of the appliance. At least 24 in (60 cm) is required both in front of and behind the chassis.
The front of the chassis extends approximately 0.5 in (1.3 cm) beyond the mounting ears.
2.2. Power Specifications
An AC power supply is standard. A DC power supply is an available option.
• AC input voltage: 100 VAC to 240 VAC
• AC input line frequency: 47 Hz/63 Hz nominal
• AC system current rating: 4.0 A max
• AC minimum efficiency: 88%
• DC input voltage: -40 VDC to -72 VDC
• DC system current rating: 20 A max
• DC minimum efficiency: 88%
