Site Preparation; Environmental Requirements; Electrical Requirements - DEC Rackmount 7000 AXP Installation And Owner's Manual

Installation

2.2 Site Preparation

The following sections describe the environmental and electrical requirements for
the rackmount DEC 7000 AXP and VAX 7000 systems.

2.2.1 Environmental Requirements

The following list contains the environmental requirements for the rackmount
DEC 7000 AXP and VAX 7000 systems:
• Keep the environment between 15°C and 28°C (59°F and 82°F).
• Keep the environment between 20% and 80% relative humidity (noncondens-
ing).
• Keep the air around the equipment well circulated to prevent heat from
building up and to provide an exhaust space at the rear of the cabinet.
• Keep the equipment away from heaters, photocopiers, and direct sunlight.
• Provide 1.5 m (4.9 ft) front and rear clearance for service access.
• Decrease static electricity buildup by locating the equipment away from busy
areas such as office corridors, and keep the environment at the recommended
humidity levels. Static electricity can cause the equipment to fail, data to be
lost, and other problems to occur.
• Keep the area where the equipment is located clean. Do not place food or
liquids on or near the equipment.
• Keep the area where the equipment is located free from dust (dust particles
can interfere with chassis cooling and can damage the hardware).

2.2.2 Electrical Requirements

A dedicated 30-ampere (200-240 Vac nominal) 3-wire branch circuit for a power
controller is required for each LSB and XMI chassis pair. The circuit must meet
national and local standards, provide a good system ground, be stable, and be
free from electrical noise. If power disturbances cannot be prevented, add power-
conditioning equipment. Consult with Multivendor Customer Service personnel
about the electrical requirements for the rackmount DEC 7000 AXP and VAX
7000 systems.
The ac power source should allow for system expansion. Do not connect other
equipment (such as air conditioners or office copiers) to the circuit dedicated to
the rackmount DEC 7000 AXP and VAX 7000 systems.
2–2 Installation