Cabletron Systems 2H253-25R manual Guidelines for the Rackmount Installation

Installing the Device

B

C

FAST ETHERNET WORKGROUP SWITCH
		LED
		MODE
		RX-TX
A		DPX-SPD
		PWR
	RESET	CPU
2H253-25R		COM

A = 15 cm (6 in)

B = 57 cm (22.5 in) C = 53 cm (21 in) D = 213 cm (7 ft)

2	4	6	8	10	12	14	16	18	20	22	24
1	3	5	7	9	11	13	15	17	19	21	23

D

2762-02

Figure 3-1 Tabletop or Shelf Installation

3.3.2Rackmount Installation

To install the 2H253-25R in a 19-inch rack, Cabletron Systems includes a strain-relief bracket for cable management and an accessory kit containing the rackmount brackets, and mounting screws to attach the rackmount brackets and strain-relief bracket.

Guidelines for the Rackmount Installation

The installation site must be within reach of the network cabling and meet the requirements listed below:

•An appropriate grounded power receptacle must be located within seven feet of the location.

•Maintain a temperature of between 5°C (41°F) and 40°C (104°F) at the installation site with fluctuations of less than 10°C (18°F) per hour.

To ensure proper ventilation and prevent overheating, leave a minimum clearance space

!of 5.1 cm (2.0 in) at the left, right, and rear of the 2H253-25R.

CAUTION

WARNING

Before installing the 2H253-25R into a rack, ensure that the rack supports the device(s) without compromising the stability of the rack. Otherwise, personal injury and/or equipment damage may result.

3-4Installation