Nederman FlexPAK DX, Installation And Service Manual

FlexPAK DX

If the dust is abrasive, it may be necessary to use

thick-walled (or rubber-coated) material in bends and

other exposed areas.
To avoid pressure losses, the duct system is to be

as short as possible and designed with two or more

branches. Use larger diameters on the clean side to re-

duce pressure losses.

5.4 Installing the unit

WARNING! Risk of personal injury

Always stop the unit before looking into the

outlet. The fan rotates at high speed and debris

and particles coming out of the outlet may

cause eye injury.

For suppression units, detailed information re-

garding the installation of an explosion sup-

pression system can be found in the suppres-

sion system manual. Work is only to be carried

out by certified personnel.

To minimize any secondary explosion damage

and spread of fire, the proper documentation

and checklists of how to handle a fire in the

unit have to be developed. Such documents are

to be developed in co-operation with the local

fire authorities and take into account the prop-

erties of the collected material.

5.4.1 Indoor installation

CAUTION! Risk of equipment damage

If the exhaust air duct is blocked, the unit may

create an overpressure, that may cause major

damage to the heat exchanger.

Never completely seal a small room with the

unit installed.

Ensure that the room where the unit is in-

stalled is well ventilated.

It is recommended that the unit is positioned indoors.
Under some conditions, the unit may draw air directly

into the high-pressure fan. This may cause a dan-

gerous underpressure in the room if air cannot enter

freely. There are to be two openings for ventilation,

at least 250×250 mm (10"×10") in size. One is to be

placed up high and the other one down low.
The warm exhaust air is to be directed from the unit

and out of the premises, see 

Figure 9

, item 4. Connect

a duct that directs the exhaust air outdoors.
The air can be directed to a heat exchanger, but there

are not to be any dampers that may obstruct the air

flow.

5.4.2 Outdoor installation

If installed outdoors, consider the following:

• The area needs to be protected from the weather.

Cover the top of the unit to protect it from snow,

rain or falling debris.

• Install a lightning conductor, see 

Section 5.7 General

requirements

.

• Environmental and ambient conditions. See 

Sec-

tion 3.5 Technical data

.

5.4.3 Moving the unit

WARNING! Risk of personal injury

• Use proper lifting and protective equipment.
• Be careful not to let the unit tip over to avoid

a crushing risk.

• The unit is to be anchored to the floor, par-

ticularly if it is located at a high level, to en-

sure that it does not move and fall down. The

frame has four holes for anchoring. Take care

during relocation and transport of the unit to

avoid tipping. If the unit is to be moved, the

frame is to be attached to the front of the

bottom frame, see 

Figure 10

, item 1. Before

moving the unit ensure that it is emptied of

extracted materials.

5.5 Electrical installation

WARNING! Risk of electric shock

• Work with electric equipment is to be carried

out by a qualified electrician.

• The connected wiring system is to be elec-

trically connected to the Potential Equalizing

System (PES) on the premises.

The electrical connection is NOT to be

equipped with an earth leakage circuit breaker

when the frequency converter is provided with

an EMC filter. The EMC filter function will make

the earth leakage circuit breaker shut off the

power.

Following the European standard, the incom-

ing 3-phase supply is to be fitted with a hand-

operated disconnecting device that conforms

to the demands of disconnectors. The discon-

necting device is to be fitted within 2–3 m from

FlexPAK DX and be clearly visible from the unit.

Refer to local and national standards when loc-

ated outside of Europe.

Check the continuity of the protective current

circuit before the unit is used.

Check that the supply voltage corresponds

to the data on the machine plate of the unit,

see 

Figure 1

, before connecting the unit to the

mains supply.

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