Nederman FlexPAK DX, Installation And Service Manual

FlexPAK DX

Fill in the installation protocol during install-

ation, see 

Chapter 9 Appendix A: Installation

protocol

.

5.1 Delivery check

Check the unit for any transport damage. In case of

damage or missing parts, notify the carrier and your

local Nederman representative immediately.

5.2 Installation requirements

Prepare the location where FlexPAK DX is to be placed

before installation. Consider the following when in-

stalling the unit:
• The unit is to be anchored to a hard, level and firm

foundation. There are four fastening brackets on

the bottom frame to be used to fasten the unit to

the raised foundation.

• The total weight of the unit with accessories.
• Traction forces generated by explosion relief vent-

ing, see 

Section 5.2.1 Bolts

.

• Maximum weight of the collected material.
• Do not install the unit close to heat sources or hot

surfaces.

• Beware of hot air from the outlet.
• Ensure that handling is convenient.
• Ensure that emptying collected dust is convenient.
• Ensure that service and maintenance are conveni-

ent.

• In case of high relative humidity, do not expose the

unit to freezing temperatures.

• Do not place the unit in direct sunlight.
• Ensure that reverse airflow into the outlet is pre-

vented.

5.2.1 Bolts

Each of the anchor bolts securing the unit is to with-

stand traction forces of 6,5 kN vertically and 2,5 kN

horizontally. See also 

Figure 10

.

Recommended bolts for concrete are Hilti HDA-PF 20-

M10×100/20. If expansion bolts are to be used, the

concrete foundation is to be prepared according to

bolt recommendations.

5.3 Duct dimensions and installation

Figure 9

 shows the unit installed in a typical vacuum

duct system.

5.3.1 Requirements

Place a sign with the intended use of the vacuum sys-

tem on every user interface (workstation). Inform all

personnel of the intended use of the system. Ensure

that personnel using the equipment do not collect

items that may cause ignition or blocking.

WARNING! Explosion risk

• The ducting is to be built with a plain steel

pipe. Plastic pipe, such as PVC, is not to be

used. Almost all types of dust pick up stat-

ic electricity when sucked through a plastic

pipe, which significantly increases the risk for

an explosion if the dust is combustible.

• Do not collect material that may cause igni-

tion or blocking. It is strictly prohibited to col-

lect material that may undergo dangerous

chemical or thermal reactions and/or self-ig-

nite.

• Some types of dust may cause a dust explo-

sion and/or fire. Before installation, investig-

ate whether the dust to be collected by the

system constitutes a risk.

• The silencer outlet for exhaust air is to be dir-

ected upwards. Fit a Spiro duct to direct the

exhaust into the atmosphere. The duct is to

be routed to prevent any particles from fall-

ing into the unit, which could cause serious

damage

• Self-ignition can occur with some types of

dust. Under no circumstances may magnesi-

um and titanium dust be sucked into the sys-

tem.

All connected ducts are to be conductive and

grounded.

5.3.2 Recommendations
Transport velocity

It is important to use the correct duct diameter to

avoid pressure losses and dust deposits in the duct

system. Ensure that the correct transport velocity is

achieved. Correct velocity depends on the properties

of the transported material. Some applications may

require velocities up to 25 m/s (82 ft/s). Take velocity

into account when choosing duct diameters. The ve-

locity is never to decrease on the way to the unit. The

transport velocity in the ducts may vary depending on

how much of the vacuum system is used.

Flushing

Depending on the type of dust and fumes to be

filtered by the unit, a principle called flushing may be

used to keep the vacuum ducts clean. Flushing may

be applied by fitting a valve at the end of the duct sys-

tem. By not using the rest of the system, and open-

ing the so-called flush valve, a high amount of air will

flush the ducts clean. By flushing each branch of the

vacuum system separately, the risk of dust deposits is

minimized.
In larger vacuum systems with multiple units installed,

the installation of Duct Isolation Valves (DIV) is recom-

mended in order to isolate one unit for maintenance

while the others remain in normal operation.

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