Nederman 881 EX Vacuum Hose Reel User Manual

Nederman 881 EX Vacuum Hose Reel

Product marking

Vacuum Hose Reel 881 EX is ATEX-classified and is marked according to the description:

II 3D Ex h IIIC T60ºC Dc
-10ºC≤Ta≤40ºC
Nederman 19.HB05X

dust atmo- sphere other than mines susceptible to firedamp.

Equipment of Group III is subdivided according to the nature of the explosive dust atmosphere for which it is intended.

Group III subdivisions:

• IIIA : suitable for combustible flyings;

• IIIB : suitable for combustible flyings and non-conductive dust;

• IIIC : suitable for combustible flyings, non-conductive dust, and conductive dust.

T60ºC| The maximum surface temperature in degrees Celsius.
Dc:| Equipment protection level Dc. Same as ATEX directive Equipment category 3D.

For explosive atmospheres, caused by mixtures of air and combustible dust, the equipment does not contain any effective ignition sources in normal operation.

-10ºC≤Ta≤40ºC| Ambient temperature range.
Nederman 19.HB05X| Certificate number. If the sign “X” is placed after the certificate number, it indic- ates that the equipment is subject to specific conditions for safe use.

1. Special Conditions for Safe Use “X”
   The microswitch should be connected to an intrinsic safe circuit or be left unconnected.

2. Type of Protection constructional safety “c”
   Technical documentation contains the information required to maintain product safety.

Preface

Thank you for using a Nederman product!
The Nederman Group is a world-leading supplier and developer of products and solutions for the environ-mental technology sector. Our innovative products will filter, clean and recycle in the most demanding of environments. Nederman’s products and solutions will help you improve your productivity, reduce costs and also reduce the impact on the environment from in-dustrial processes.
Read all product documentation and the product iden-tification plate carefully before installation, use, and service of this product. Replace documentation imme-diately if lost. Nederman reserves the right, without previous notice, to modify and improve its products including documentation.

This product is designed to meet the requirements of relevant EC directives. To maintain this status, all installation, maintenance, and repair is to be done by qualified personnel using only Nederman original spare parts and accessories. Contact the nearest au-thorized distributor or Nederman for advice on tech-nical service and obtaining spare parts. If there are any damaged or missing parts when the product is de-livered, notify the carrier and the local Nederman rep-resentative immediately.

Safety

Classification of important information
This document contains important information that is presented either as a warning, caution or note, ac-cording to the following examples:

WARNING! Risk of personal injury Warnings indicate a potential hazard to the health and safety of personnel, and how that hazard may be avoided.
CAUTION! Risk of equipment damage Cautions indicate a potential hazard to the product but not to personnel, and how that hazard may be avoided.
NOTE! Notes contain other information that is import-ant for personnel.

Description

Nederman Vacuum Hose Reel 881 EX is suitable for use together with high vacuum extraction systems. Typical applications are:

• Vacuum cleaning, see Figure 6.
• Extraction of particles from grinding and polishing
• Extraction of welding fumes

Vacuum Hose Reel 881 EX can be a part of a local exhaust ventilation system for separating welding fumes containing CMR (carcinogenic mutagenic re- protoxic) substances, where the complete system must be in compliance with required legislations, see www.who.int for classification of welding fumes.

CAUTION! Risk of equipment damage Do not use hose reel Series 881 EX with abras-ive material.
NOTE! Attachment of additional suction equipment and modifications of the vacuum extraction system can affect the pressure drop. Pressure drop for complete system shall be considered by the installation designer or the user.

Technical data

|
---|---
Weight| 22,5 kg (without hose)
Recommended mounting height| Maximum 4 m (13 ft)
Hose dimension| • Internal diameter: 38 mm or 50 mm (1 1/2 in or 2 in.)

• Length maximum 10 m (33 ft)

Hose material| Conductive thermoplastic
Duct connection| Internal diam. 63 mm (2 1/2 in.)
Maximum negative pressure| 45 kPa
Operating temperature| -10 °C to +40 °C (14 °F to 104 °F)
Material recycling| Reel without hose: 100 weight-%
Pilot signal| • Non-ATEX zone: maximum 48 V, 2 A

• ATEX zone: Intrinsically safe circuit (EX ia/ib)

Dimensions| See Figure 1

Description of ATEX products
Vacuum Hose Reel 881 EX, marked with the EX sym-bol are protection level 3D equipment according to directive 2014/34/EU.
This means that models with the EX symbol may be placed in areas classified as zone 22 according to dir-ective 1999/92/EC.

Category limit
The function of the Vacuum Hose Reel 881 EX is to be a part of an extraction piping system. Even if the product with EX symbol is category 3D equipment for use in zone 22 (881 exterior), it can be used with a piping system internally classified as zone 20 or 21.
Since there is no internal ignition source inside the reel, it is to be considered as simple piping and does not fall under the scope of the directive 2014/34/EU.

Pressure drop diagram
For 38 mm hose, see Figure 16.

• A1: coiled on reel
• B1: fully uncoiled on floor For 50 mm hose, see Figure 17.
• A2: coiled on reel
• B2: fully uncoiled on floor

Installation

Mounting instruction
NOTE! The maximum mounting height for the reel is 4 m. See Figure 2.

Make sure that the surface, on which to mount the reel, is level. Drill four holes, using the hole template which comes in the package.

1. Fit the mounting brackets in such a way that it will make the reel hanging horizontally. Ensure that suitable fixing bolts are used considering the ceil-ing or wall construction material. The bolts must each stand a tractive force of a minimum of 3500 N.
2. Lift the reel up and fasten it in the brackets.
3. Wall mounting
4. Ceiling mounting
5. Pull out the safety lock.
6. Put the hose through the outlet of the outlet arm.
7. Fit the hose stop in the required position on the hose.

Safety lock
WARNING! Risk of personal injury
The reel is equipped with a safety lock that should be used during service or repair work on the reel, for example when placing the hose.

NOTE! When replacing the spring the spring power must be completely neutralized (instruction is delivered together with the spare part spring).

Mounting/Replacing the hose See Figure 3a.
When the reel has been mounted on a wall or ceiling, the hose is replaced in the following way:

NOTE!

• Ensure that the drum is locked by the safety lock, see Figure 9/A.
• Use only Nederman hoses.

1. Remove the cover plate.

2. Remove the old existing hose.

3. Fit the existing hose coupling to the new hose end and fit the new hose on the connecting piece in-side the drum
   NOTE!
   For the length of hose from swivel to clamp, see Figure 3b.

4. Fasten the new hose with the hose clip on the drum according to the picture.

5. Fit the cover plate.

6. Unlock the safety lock.

7. Let the hose recoil by turning the drum by hand. Make sure that the hose forms evenly divided on the drum.

8. Fit the hose stop in the desired position, see Figure 3c.

Ratchet mechanism
See Figure 4 and Figure 5.
The hose reel is delivered with a ratchet mechanism which retains the hose in the required out-drawn po-sition. The ratchet will disengage if the hose is drawn out a little further, and the hose then recoils to the drum.
The ratchet is factory set for wall mounting of the reel, see Figure 5/A. When mounting the reel in the ceiling, the ratchet must be moved from one position to another, see Figure 5/B, C.

NOTE!
The ratchet must, after it has been mounted, point towards the centre of the reel, see Figure 7.

If the hose is pulled out too far, the ratchet could, un-fortunately, become permanently locked. It may be released by the following procedure.

1. Take a steady grip on the drum end plate and turn a little in the outdraw direction until the ratchet is disconnected.
2. Holding the endplate and hose at the same time, slowly release until the hose has recoiled.
3. Fit the ratchet in the other mounting position.

Adjustment of spring tension
See Figure 8.
The reel has a factory set basic spring tension which after mounting the reel could need an adjustment.

Increasing the spring tension

1. Make sure that the hose is in place and fully recoiled on the reel.
2. Use the socket head cap spanner which comes with the reel. Turn in the direction of the arrow as shown in the picture.
3. Tense the spring one revolution at a time and test the coiling operation gradually.

Decreasing the spring tension

1 Make sure that the hose is in place and fully recoiled on the reel.
2 Lock the safety lock, see FigureD8/A.
3 Remove the hose stop.
4 Remove one coil of hose.
5 Refit the hose stop.
6 Unlock the safety lock, see FigureD8/A.

Damper function
The reel is fitted with a mechanical damper which automatically opens when the hose is pulled out. The damper closes when the hose is rewound. Always check that there is enough suction in the hose before use. If not, pull the hose out, corresponding approxim-ately one revolution, to open the damper.

Installation in non-ATEX zone
See Figure 10 and Figure 11.

Connection to duct
See Figure 10.
The hose reel should be connected to the fixed duct and high vacuum extraction system with a connection hose, see Figure 10/A.

Electrical installation
See Figure 11/A.
The reel is equipped with a micro-switch and a pilot signal cable, see Figure 10/B, which could control the high vacuum extraction unit to make it start by uncoil-ing the hose and to stop by recoiling the hose onto the drum. A suitable motor starter is required to execute this function.
The electrical installation must be done by a qualified electrician according to local regulations.

Earthing
See Figure 3a.
Connect the earthing cable to an earthing point on the reel.

Installation in ATEX zone 22
See Figure 12, Figure 13 and Figure 14.

Permitted materials
The hose reel is only intended to be a part of an extraction system transporting dust with the following properties:

• MIE (Minimum Ignition Energy) > 3 MJ and
• MIT (Minimum Ignition Temperature) > 115 °C.

Do not extract items that may cause ignition or block-ing.

Requirement for ATEX conformity (x)
The microswitch should be connected to an intrinsic safe circuit or be left unconnected, see Figure 14/A.

Accessories in classified locations (ATEX)
All connected accessories must be installed accord-ing to applicable regulations for EX products. Please contact Technical Support, AB Ph. Nederman & Co. for detailed information regarding the installation of the Vacuum Hose Reel 881 EX accessories in classified areas.

Connection to duct
See Figure 12 and Figure 13.

Secure conductivity
See Figure 12 and Figure 13.
Every time new cleaning equipment is connected to the hose, the conductivity between the cleaning equipment and the reel must be measured and se-cured. Electrical resistance to be below 1 MΩ.

Connection to cleaning equipment
WARNING! Risk of fire or explosion
Only conductive cleaning equipment (electrical resistance to be below 1 MΩ) should be used. If the conductivity between the cleaning equip-ment and the reel is not secured (electrical res-istance to be below 1 MΩ) there is a risk of fire or explosion.

Electrical installation See Figure 14B.
To ensure proper function and required level of pro-tection with regards to the equipment category, make sure that the following points are checked:

• The electrical installation must be done by a certi-fied electrician. A certified electrician must also pay attention to the conditions for installations in zones classified according to ATEX.
• Check that proper measures have been taken to avoid all types of electrical stray currents to and/or from the piping system and electrical wiring.
• Connected hoses and/or piping must be conductive and grounded to the reel earth connection point.

Earthing
See Figure 3a.
Connect the earthing cable to an earthing point on the reel.

Operation

See Figure 14.

• ≤ °30 Optimal
• < °45 Okay
• ≥ °45 Do not use

Maintenance

For service and technical support, please contact AB Ph. Nederman & Co.
Make sure the inside of the hose reel and the connec-tion pipes are free from deposits. A build-up of depos-its inside the piping system may cause a discharge of static electricity.
Make sure the outside of the hose reel is free from dust layers.
Oily and sticky substances can sometimes stick to the damper blade resulting in jamming so that the damper does not close completely. The reel must then be dis-mantled for cleaning.

WARNING! Risk of personal injury Waste material collected in Vacuum Hose Reel 881 EX can constitute a health risk. Always check the safety requirements related to the specific waste when handled.

Service instruction
Check the following points at least once a year. Take action when necessary.

• Check that the reel is secured in the ceiling or on the wall.
• Check the duct connections for leakage.
• Check the hose for damage.
• Check the coiling function of the hose. Adjust the spring tension when necessary.
• Check the operation of the damper. The damper should open automatically when the hose is pulled out.
• Check that there is enough suction in the exhaust hose. If not, check the damper function and the hose for holes and damage.
• Check that the operating device is not damaged.

Service and maintenance of ATEX equipment
To ensure the required level of protection with re-gards to the equipment category, check the following points:

• Ensure that the Vacuum hose reel is regularly in-spected for damage or malfunction. If the vacuum hose reel is damaged it must be repaired immedi-ately.
• Ensure that no explosive atmosphere and/or dust layers are present when cleaning, servicing or in-specting the hose reel.
• Ensure that only original (OEM) spare parts are used.
• Ensure that the reel is not covered with thick dust layers (>5 mm). This is prevented by setting up routines for regular cleaning and including these in the explosion protection document.

Spare Parts

CAUTION! Risk of equipment damage
Contact your nearest authorized distributor for advice on technical service or if you require help with spare parts.

Ordering spare parts
When ordering spare parts always state the following:

• The part number and control number (see the product identification plate).
• Detail number and name of the spare part
• Quantity of the parts required.

Recycling
The product has been designed for component mater-ials to be recycled. Different material types must be handled according to relevant local regulations. Con-tact the distributor or $N$e$d$e$r$m$a$n$ if uncertainties arise when scrapping the product at the end of its service life.

References

• Nederman USA | Industrial Air Filtration Experts
• World Health Organization (WHO)

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