Contents

1 Preparing for installation· 1-1

Safety recommendations· 1-1

General safety recommendations· 1-1

Electricity safety· 1-1

ESD prevention· 1-1

Laser safety· 1-2

Moving safety· 1-2

Ladder safety· 1-3

Examining the installation site· 1-3

Weight support 1-3

Space· 1-4

Cooling· 1-6

Temperature and humidity· 1-7

Cleanliness· 1-8

Harmful gas limit 1-8

EMI 1-9

Grounding· 1-9

Power supply· 1-9

Unpacking and inspecting the router 1-9

Unpacking and inspecting the chassis· 1-9

Unpacking and inspecting the components· 1-20

Installation tools· 1-21

Pre-installation checklist 1-22

 

1 Preparing for installation

Safety recommendations

To avoid bodily injury and damage to the router, read all safety recommendations including the compliance and safety manual for the router carefully before installation. Note that the recommendations do not cover every possible hazardous condition.

General safety recommendations

·     Keep the chassis clean and dust-free.

·     Do not place the router on a moist area, and avoid liquid flowing into the router.

·     Make sure the ground is dry and flat and anti-slip measures are in place.

·     Ensure good ventilation in the equipment room and keep the air inlet and outlet vents of the router free of obstruction.

·     Make sure the operating voltage is in the required range.

·     When servicing the router, do not wear loose clothing or any other things that could get caught in the chassis and remove all metal jewelry such as watches, bracelets, and necklaces.

·     Wear protective gloves when inspecting or moving the router.

·     Use a screwdriver to fasten screws.

·     If you cannot install a removable component smoothly, stop your operations and troubleshoot the issues, preventing component damages caused by misoperations.

·     After completing the installation, move the empty packaging materials and installation tools away from the router.

·     Keep the chassis and installation tools away from walk areas.

Electricity safety

·     Clear the work area of possible electricity hazards, such as ungrounded power extension cables, missing safety grounds, and wet floors.

·     Locate the emergency power-off switch in the room before installation so you can quickly shut power off when an electrical accident occurs.

·     Remove all external cables, including power cords, before moving the chassis.

·     Do not work alone when servicing the router with power present.

·     Never assume that power has been disconnected from a circuit. Always check.

·     The router uses two power switches to achieve redundancy. The router is powered off only when both power switches are off.

ESD prevention

	CAUTION: Make sure the resistance reading between human body and the ground is in the range of 1 to 10 megohms (Mohms).

 

Preventing electrostatic discharge

To prevent electrostatic discharge (ESD) damage, follow these guidelines:

·     Ground the router reliably. For how to ground your router, see "Grounding the router."

·     Always wear an ESD clothing, an ESD wrist strap, and ESD gloves when installing or removing removable components. Make sure the wrist strap is reliably grounded.

·     Hold a module by its edges. Do not touch any electronic components or PCB.

·     Put a module in an antistatic bag and keep it secure if you are not to install it in the chassis.

Attaching an ESD wrist strap

1.     Put the wrist band of the ESD wrist strap on your wrist.

2.     Lock the wrist band tight around your wrist so that it makes good contact with the skin.

3.     Attach the other end of the ESD wrist strap to an ESD jack on the chassis.

The router has one ESD jack on both the front and rear panel.

4.     Make sure the rack and router is reliably grounded.

Laser safety

	WARNING! ·     Disconnected optical fibers or transceiver modules might emit invisible laser light. Do not stare into beams or view directly with optical instruments when the router is operating. ·     Before you remove the optical fiber connector from a fiber port, execute the shutdown command in interface view to shut down the port.

 

	CAUTION: ·     Insert dust caps into open optical fiber connectors to protect them from contamination and ESD damage. ·     Insert dust plugs into open fiber ports and transceiver module ports to protect them from contamination and ESD damage.

 

Moving safety

	WARNING! Hold the chassis handles firmly to move the router.

 

CAUTION: Do not hold air vents of the chassis or the handle of a fan tray, power supply, or module to move the router. Doing so might cause equipment damage.

 

The router is heavy and large. When you move the router, follow these guidelines:

·     Before unpacking the router, use a mechanical device such as a forklift to move the router as a best practice. After unpacking the router, use the dolly provided with the router to move the router to the installation location.

·     Remove all power supplies, modules, and external cables (including power cords) before moving the chassis.

·     To move the chassis manually, you need four to five people. Before moving the router, remove modules, filler panels, and fan trays from the router.

·     Lift and put down the chassis slowly and never move it suddenly.

·     When moving the router, keep your footing solid and maintain body balance.

·     Pay attention to the safety symbols on the package and handle the router accordingly. (The symbols in Table1-1 are for illustration only. The symbols on your device packages might differ from these ones.)

Table1-1 Packing symbols

Symbol	Description
	Do not stack the devices beyond the specified number (n)
	Place the device with the arrows up.
	The device is fragile. Handle it with care.
	Keep the device from humidity, rains, and wet floor.

 

Ladder safety

The router is 41U high. When you use a ladder to install and maintain the router, follow these guidelines:

·     Make sure the ladder is in good working condition and the length of the ladder meets the actual requirements.

·     Use the ladder within its Duty Rating and do not overload it.

·     When using the ladder, secure the ladder and strictly follow the rules for using the ladder to avoid bodily injury.

Examining the installation site

The router must be used indoors. To ensure correct operation and long service life of the router, verify that the installation site meets the generic operating environment requirements and all the requirements in this section before installing the router. For the generic operating environment requirements, see Generic Operating Environment Requirements for H3C Devices Installed Indoors.

Weight support

Make sure the floor or ground at the installation site can support the combined weight of the router and the rack. The total weight of the router includes the chassis and its components (for example, modules, fan trays, power supplies, and cables) and accessories. For the weights of the router and its components, see H3C CR19000-20 Core Router Hardware Information and Specifications.

To mount the router in a rack, select slide rails that can support the total weight of the router.

To assess the load-bearing requirements for the floor and slide rails, take potential system expansion (for example, adding more modules, power supplies, and fan trays) also in consideration.

Space

IMPORTANT: ·     There is a minimum clear height of 3 m (9.84 ft) (from the beam or the air duct to the floor) in the equipment room. ·     For easy installation and maintenance, reserve a minimum clearance of 1200 mm (47.24 in) between the rack and walls or other devices.

 

Table1-2 Router dimensions and rack requirements

Model	Chassis dimensions	Rack requirements
CR19000-20	·     Height—1820 mm (71.65 in)/41 RU ·     Width—440 mm (17.32 in) ·     Depth—980 mm (38.58 in) ¡     Chassis—850 mm (33.46 in) ¡     Cable management bracket—90 mm (3.54 in) ¡     Fan tray handle at the rear—40 mm (1.57 in)	As a best practice, use a rack that meets the following requirements: ·     With dimensions (H × W × D) of 2200 × 600 × 1200 mm (86.61 × 23.62 × 47.24 in) ·     180 mm (7.09 in) from the front rack posts to the interior side of the front door when the router is fully configured with components and cables. You can reduce the distance between the front rack posts and the front door as required. ·     A minimum of 950 mm (37.40 in) from the front rack posts to the interior side of the rear door. ·     740 mm (29.13 in) from the front rack posts to the rear rack posts.

 

Figure1-1 Chassis dimensions

 

Figure1-2 Rack requirements

 

Cooling

The router provides front-to-rear airflows. Plan and build the ventilation system at the installation site carefully to ensure adequate cooling for the device. Make sure the following requirements are met:

·     The installation site has a good cooling system.

·     The air conditioners do not blow air directly onto the router.

·     The rack for the router can provide adequate cooling and ventilation, with the perforation rate of rack doors greater than 50%.

·     The air inlet and outlet vents of the router are not blocked and adequate clearance is reserved around the air vents.

Figure1-3 Airflow through the chassis

 

Temperature and humidity

	CAUTION: If condensation occurs on the chassis when you move it from a lower temperature to a higher temperature, dry the chassis before powering it on to avoid short circuits.

 

Adverse temperature and humidity conditions in the equipment room will accelerate the aging of devices and reduce the capability of the device to withstand harsh environment conditions.

·     If the temperature in the equipment room is too high, too low, or changes dramatically, the device reliability is reduced and its service lifetime is shortened.

·     High temperature can accelerate the aging of insulation materials and significantly lower the reliability and lifespan of the router.

·     Lasting high relative humidity can cause poor insulation, electricity leakage, mechanical property change of materials, and metal corrosion.

·     Lasting low relative humidity can cause washer contraction and ESD and bring problems including loose screws and circuit failure.

To prevent the preceding issues, maintain the temperature and humidity in the equipment room in acceptable ranges. As a best practice, maintain the temperature in the range of 18°C to 25°C (64.4°F to 77°F) and the relative humidity less than 60% RH for the cold aisle and the air inlet area of the rack.

Cleanliness

Mechanically active substances buildup on the chassis might result in electrostatic adsorption, which causes poor contact of metal components and contact points. In the worst case, electrostatic adsorption can cause communication failure.

Table1-3 Mechanically active substance concentration limit in the equipment room

Substance	Particle diameter	Concentration limit
Dust particles	≥ 5 µm	≤ 3 × 104 particles/m3 (No visible dust on desk in three days)
Dust (suspension)	≤ 75 µm	≤ 0.2 mg/m3
Dust (sedimentation)	75 µm to 150 µm	≤ 1.5 mg/(m2h)
Sand	150 µm to 1000 µm	≤ 30 mg/m3

 

To maintain cleanliness in the equipment room, follow these guidelines:

·     Use dustproof materials for floors and walls and use coating that does not produce powders.

·     Use double-layer glass in windows and seal doors and windows with dust-proof rubber strips. Use screen doors and screen windows in the external side.

·     Keep the equipment room clean. If the equipment room environment is not as desired, install air filters on the rack doors and clean the air filters regularly.

·     Wear ESD clothing and shoe covers before entering the equipment room.

Harmful gas limit

The equipment room must also meet limits on salts, acids, and sulfides to eliminate corrosion and premature aging of components, as shown in Table1-4.

Table1-4 Harmful gas limits in the equipment room

Gas	Maximum concentration (mg/m3)
SO2	0.2
H2S	0.006
NH3	0.05
Cl2	0.01
NO2	0.04

 

To control harmful gases, use the following guidelines:

·     Use environmentally friendly materials to decorate the equipment room. Avoid using materials that contains harmful gases, such as sulfur or chlorine-containing insulation cottons and rubber mats.

·     Keep the air inlet of the equipment room away from the pollution source and the sewer.

·     Place batteries separately, preferably in a separate room.

·     Employ a professional company to monitor and control harmful gases in the equipment room regularly.

EMI

All electromagnetic interference (EMI) sources, from outside or inside of the router and application system, adversely affect the router in the following ways:

·     A conduction pattern of capacitance coupling.

·     Inductance coupling.

·     Electromagnetic wave radiation.

·     Common impedance (including the grounding system) coupling.

To prevent EMI, use the following guidelines:

·     Take effective measures to filter interference from the power grid.

·     Separate the working earthing system of the router from the grounding facility and lightning protection facility of the other electrical devices as far as possible.

·     Keep the router far away from radio transmitting stations, radar stations, and high-frequency devices.

·     Use electromagnetic shielding, for example, shielded interface cables, when necessary.

Grounding

Correctly grounding the router is crucial to lightning protection, anti-interference, and ESD prevention. Use a good grounding system for the router. Make sure the resistance between the chassis and the ground is less than 1 ohm.

Power supply

A good power supply system is essential for correct operation of the router. The router supports AC, DC, and high-voltage DC power inputs. Make sure the equipment room meets the following requirements for the power supply systems.

·     The AC power supply system is stable and reliable and capable of providing power required by the router. As a best practice, use two power lines for the AC power supply system. If only one power line is available in the equipment room, prepare a diesel generator as a backup power source.

·     The DC power supply system is stable and reliable and its output voltage is stable and within the acceptable range allowed by the device.

·     Enough batteries are available to ensure uninterrupted device operation in the event of a power failure.

Unpacking and inspecting the router

Unpacking and inspecting the chassis

Pre-unpacking inspection

IMPORTANT: Before unpacking the router, finish basic pre-unpacking inspection.

 

Before unpacking the router, perform basic pre-unpacking inspection with the presence of the service party. Make sure the two parties sign for confirmation if all meet the requirements.

Moving the plywood box to the installation site

CAUTION: ·     To avoid device damage, move the plywood box to a location close to the installation site before unpacking it. ·     Do not place the plywood box upside down.

 

The shipping weight of the router includes the chassis and packaging materials. Determine a moving method for the chassis based on its shipping weight. The packaging materials include wooden boards, steel hinges, standard tongues, and foam cushions.

As a best practice, use a forklift or other mechanical device to move the plywood box to the installation site.

Table1-5 Physical specifications

Model	Shipping weight
CR19000-20	416 kg (917.11 lb)

 

Reserve sufficient clearance in front of the plywood box front (side marked with FRONT) as shown in Figure1-4 for placing a ramp over which you push the router down from the pallet.

Figure1-4 Reserving enough clearance in front of the plywood box for placing a ramp

 

Unpacking and inspecting the router

WARNING! The edges of standard tongues are sharp. To avoid bodily injury, wear protective gloves when unpacking the router.

 

	CAUTION: ·     If you find something damaged before powering on the router, keep the router as it is, take photos, and keep the original packing materials, padding materials, and accessories. ·     When transporting, moving, and installing the router, be careful not to bump the router into the door or wall.

 

IMPORTANT: As a best practice, keep the packing materials for later moving or shipment.

 

To unpack and inspect the router:

1.     Prepare a screwdriver and other tools and wear protective gloves.

2.     Place the plywood box on the floor with the pallet at the bottom.

3.     Insert a screwdriver into the hole of a standard tongue on the plywood box to straighten the standard tongue, as shown in Figure1-5.

You can also use a wrench or claw hammer to straighten the standard tongue.

Figure1-5 Straightening a standard tongue

 

4.     After straightening all standard tongues on the plywood box, lift the plywood box lid and side panels, as shown in Figure1-6.

Figure1-6 Removing the plywood box lid and side panels

 

5.     Unpack the wooden ramp, place the ramp in front of the pallet, and use U-type fasteners to secure the ramp to the pallet front.

Figure1-7 Securing the ramp to the pallet

 

6.     Remove the foam cushions and anti-corrosion bags from the router and verify the following items:

¡     The router is intact without any signs of water soaking or corrosion.

¡     The labels on the chassis are correct, clear, and complete.

¡     The accessory box packages are intact and the number of the boxes is correct.

Moving the chassis to the installation location

1.     Use a wrench to remove the screws on the hold-down brackets that secure the dolly to the pallet, a total of 12 screws on the left and right hold-down brackets, as shown in Figure1-8.

Figure1-8 Removing the screws on the hold-down brackets that secure the dolly to the pallet

 

2.     Adjust the levelling foot of the dolly so that the dolly wheels support the chassis, as shown in Figure1-9.

Figure1-9 Adjusting the levelling foot of the dolly

 

3.     Push the chassis down over the wooden ramp slowly.

The router is high and heavy. As a best practice, use a minimum of four people to push the chassis.

Figure1-10 Pushing the chassis down over the wooden ramp

 

4.     Detach the elevator bridge plate from the pallet and keep it secure for future use.

Figure1-11 Detaching the elevator bridge plate from the pallet

 

The elevator bridge plate (as shown in Figure1-12) is required when you need to move the chassis in a freight elevator. Before moving the chassis in or out of a freight elevator, insert the pegs of the plate into the gap between the elevator car bottom edge and the landing floor edge so that the plate covers the gap, as shown in Figure1-13. This prevents the dolly wheels from being stuck into the gap.

Figure1-12 Elevator bridge plate

 

Figure1-13 Using the elevator bridge plate in a freight elevator

 

5.     Move the chassis to a location close to the installation location, and then lower down the levelling foot of the dolly so that the levelling foot support the chassis.

6.     Remove all fan trays from the chassis.

To remove a fan tray, press the red button on the fan tray handle and then pull the fan tray out of the chassis slowly.

After removing a fan tray, place it upside down on an anti-static mat with the bottom clasp facing up, as shown in Figure1-14.

Figure1-14 Removing fan trays

 

7.     Adjust the levelling foot of the dolly so that the dolly wheels support the chassis.

8.     Move the chassis to the front of the rack and then detach the dolly from the chassis as follows:

a.     Use a Phillips screwdriver to remove the screws on the side of the L-type bracket.

b.     Use a wrench to remove the screws at the bottom of the L-type bracket.

Figure1-15 Detaching the dolly from the chassis

 

IMPORTANT: ·     The router is high and heavy. As a best practice, align the chassis with the rack and guide rails in the rack before detaching the dolly from the chassis. Ensure that the L-type brackets are removed completely before rack-mounting the router. ·     Keep the detached dolly secure for later moving.

 

Unpacking and inspecting the components

IMPORTANT: Before unpacking a component, read the label on the carton carefully to verify the model of the component packaged in the carton.

 

Typically, modules, power supplies, and fan trays are packaged in cartons. The packaging materials include cartons, foam cushions, and anti-static bags.

To unpack and inspect a component:

1.     Use a utility knife to cut the straps on the carton. Open the carton and take the top foam cushion out of the carton.

2.     Wear an ESD wrist strap and make sure the wrist strap is reliably grounded.

3.     Take the component out of the anti-static bag.

4.     Check the items in the carton against the packing list to verify that the items are as ordered.

Figure1-16 Unpacking a component packaged in a carton

 

Installation tools

Installation tools are required when installing the router. Prepare installation tools as required. Figure1-17 provides installation tools for your reference.

Figure1-17 Installation tools

 

Pre-installation checklist

Table1-6 Pre-installation checklist

Item		Requirements	Result
Safety precautions		·     The router is far away from any moist areas and heat sources. ·     The power-off switch in the equipment room is located.
Installation site	Load bearing	·     The floor or ground at the installation site can support the combined weight of the router and the rack. ·     The slide rails can support the actual weight of the router.
	Space	·     There is a minimum clear height of 3 m (9.84 ft) (from the beam or the air duct to the floor) in the equipment room. ·     There is a minimum clearance of 1200 mm (47.24 in) between the rack and walls or other devices
	Ventilation	·     A good ventilation system is available at the installation site. ·     The air inlet and outlet vents of the router are not blocked and adequate clearance is reserved around the air vents.
	Temperature and humidity	The temperature and humidity conditions in the equipment room meet the requirements.
	Cleanliness	The dust concentrations in the equipment room meet the requirements.
	Harmful gas limit	Harmful gases in the equipment room do not exceed the limits.
	EMI prevention	·     Effective measures are taken for filtering interference from the power grid. ·     The working earthing of the router is away from the grounding facility of power equipment or lightning protection grounding facility. ·     The router is far away from radio transmitting stations, radar stations, and high-frequency devices. ·     Electromagnetic shielding, for example, shielded interface cables, is used as required.
	ESD prevention	·     The humidity and temperature are in the acceptable ranges. ·     Dust-proof measures are taken in the equipment room. ·     The router and rack are reliably grounded.
	Lightning protection	·     The router is reliably grounded. ·     The grounding point of the AC power receptacle is reliably grounded. ·     (Optional.) Network port lightning arresters are available.
	Grounding	·     The grounding specifications for the equipment room comply with national and industry standards. ·     All communication devices in the equipment room are reliably grounded. ·     The working earthing and protective earthing systems of the communication power supplies use the same earthing conductor set with the protective earthing system of the communication devices.
	Power supply	·     The power supply system can output enough power to maintain the device operation. ·     An uninterrupted power supply (UPS) is available. ·     The power-off switch in the equipment room is located so that the power can be immediately shut off when an accident occurs.
Installation precautions	Rack	·     The rack can provide adequate cooling and ventilation. ·     The rack is provided with or installed with air deflectors. ·     The rack is sturdy enough to support the weight of the router and its installation accessories. ·     The rack has a size that can accommodate the router.
	PDUs	Make sure the installation of PDUs does not cross the rack beams, does not affect fan tray installation, removal, or maintenance, and allows easy cable routing.