Important: Prior to installation, personnel should review and be familiar with all recommendations for Central Office installations, as found in Telcordia GR-1275-CORE Central Office Environment Installation/Removal Generic Requirements, Issue 3, December 2001.
Warning: The PFUs each have two power supply cables (-48VDC and RTN). To reduce the risk of electric shock, exercise caution when working within the chassis if one PFU is still cabled. To fully de-energize the PFU, disconnect both power supply cables from each PFU. Beide Netzteile (Power Filter Units, PFU) haben 2 Stromversorgungsanschluesse (-48 VDC und RTN). Vorsicht is geboten bei Arbeiten am Chassis, solange noch ein Netzteil verkabelt ist. Um die PFU komplett stromlos zu schalten muessen beide Kabel entfernt werden.
Caution: When planning chassis installation, take care to ensure that equipment rack or cabinet hardware does not hinder air flow at any of the intake or exhaust vents. Additionally, ensure that the rack/cabinet hardware, as well as the ambient environment, allow the system to function within the required limits. Refer to the Ventilation Considerations section of this chapter for more information.
• Standard: In this configuration, the flanges of the mounting brackets are flush with the front of the chassis. This is the default configuration as shipped. Refer to the Standard Installation of the Chassis section of this chapter.
• Mid-mount: In this configuration, the flanges of the mounting brackets are recessed from the front of the chassis. To do this, install the mounting brackets toward the middle of the chassis on either side. Refer to the Mid-Mount Installation of the Chassis section of this chapter.
• If no lift is available, reduce the weight according to the instructions in the Reducing the Weight of the Chassis Prior to Installation section that follows. This reduces the weight of the chassis to approximately 125 lbs. (56.7 kg).Important: If you are installing more than one chassis in an equipment rack, to ensure an easier installation, begin by installing the first chassis near the bottom of the rack.
Caution: When handling or moving the chassis, lift the chassis from the bottom only. Lifting it by any other part could result in damage to the chassis.
ESD Caution: During installation, maintenance, and/or removal, wear grounding wrist and/or heel straps to avoid ESD damage to the components. Failure to do so could result in damage to electrical components and could potentially void your warranty.
Step 1Warning: To avoid personal injury and/or damage to the fan tray, be sure to support the fan tray’s weight from its front and back as you slide it completely out of the chassis. Vorsicht beim Herausziehen der Luefter-Schublade: um eine Beschaedigung des Moduls und eventuelle Verletzungen zu vermeiden, sollte diese hinten und vorne unterstuetzt werden.
Warning: To avoid personal injury and/or damage to the fan tray, be sure to support the fan tray’s weight from its front and back as you slide it completely out of the chassis. Vorsicht beim Herausziehen der Luefter-Schublade: um eine Beschaedigung des Moduls und eventuelle Verletzungen zu vermeiden, sollte diese hinten und vorne unterstuetzt werden.
Step b
Step d Repeat step b and step c for the PFU located in the bay labeled Power Filter Unit 2 located on the lower-right side of the chassis.
Step 4 Proceed to either the Standard Installation of the Chassis or Mid-Mount Installation of the Chassis section that follows, based on the mounting option you are using.ESD Caution: During installation, maintenance, and/or removal, wear grounding wrist and/or heel straps to avoid ESD damage to the components. Failure to do so could result in damage to electrical components and could potentially void your warranty.
Step 3
Step 4 If you took steps to reduce the weight of the chassis prior to installation, refer to the instructions in the Re-Installing Chassis Sub-components section to re-install the components. Otherwise, proceed to Application Card Installation.ESD Caution: During installation, maintenance, and/or removal, wear grounding wrist straps to avoid ESD damage to the components. Failure to do so could result in damage to electrical components and could potentially void your warranty.
Step 3
Step 6 Proceed to the Grounding the Chassis section that follows to ground the chassis.Caution: Failure to properly ground the chassis could result in personal injury and/or damage to the chassis and its components.
Step 4 Secure the lug to the ground terminals with the nuts and washers you removed in step 2. The nuts should be torqued to 50 in-lb (5.65 n-m).
Step 5 Repeat step 2 through step 4 to connect the ground cable to the grounding posts on the lower-right corner at the rear of the chassis next to the bay labeled Power Filter Unit 2.
Step 6 If you took steps to reduce the weight of the chassis prior to installation, refer to the instructions in the Re-Installing Chassis Sub-components section to re-install the components. Otherwise, proceed to Application Card Installation.If you performed the procedure in the Reducing the Weight of the Chassis Prior to Installation section, perform the instructions below to re-install the sub-components of the chassis that were removed.ESD Caution: During installation, maintenance, and/or removal, wear grounding wrist straps to avoid ESD damage to the components. Failure to do so could result in damage to electrical components and could potentially void your warranty.
Step d
Step c
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