Heatex B Guía de mantenimiento y servicio

AIR-TO-AIR HEAT EXCHANGERS

MODEL B

INSTALLATION

& MAINTENANCE

2 (10) HEATEX MODEL B INSTALLATION & MAINTENANCE MANUAL

TEC-1302 Ver 4-2016-05-30

ENGLISH

ADDRESS AND CONTACT DATA

Heatex AB

Bronsyxegatan 13

S-213 75 MALMÖ

Sweden

Telephone: +46 410 710 500

[email protected]

www.heatex.com

DISCLAIMER

Information in this document (including URL references and information from other external sources

referred herein) is subject to change without notice. Owing to continued product development, Heatex

reserves the right to introduce alterations in both design and prices without prior notice.

THIS DOCUMENT IS PROVIDED ”AS IS” WITH NO EXPRESSED OR IMPLIED

WARRANTIES WHATSOEVER, INCLUDING ANY WARRANTY OF MERCHANTABILITY,

NON-INFRINGEMENT, FITNESS FOR ANY PARTICULAR PURPOSE, OR OTHERWISE

ANY WARRANTY ARISING OUT OF ANY PROPOSAL, SPECIFICATION OR SAMPLE. ALL

LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PROPRIETARY

RIGHTS, RELATING TO USE OF INFORMATION CONTAINED OR REFERENCED IN

THIS DOCUMENT IS HEREBY EXPRESSLY DISCLAIMED.

All information and content included (whether directly or by reference) in this document, such as

text, graphics and images, is the property of Heatex AB, its subsidiaries, afliates, licensors and/or

joint venture partners. All rights are reserved.

No licenses, express, implied or otherwise to any intellectual property rights in this document are

granted by Heatex AB.

This disclaimer and copyright notice is subject to and governed by Swedish law.

Heatex AB

3 (10)HEATEX MODEL B INSTALLATION & MAINTENANCE MANUAL

TEC-1302 Ver 4-2016-05-30 ENGLISH

DECLARATION OF INCORPORATION

Description and identication of the partly completed machinery:

Rotary heat exchanger model B with casing and with a drive unit.

The following essential requirements of EC Machinery Directive 2006/42/EC have been applied and

fullled:

1.1.2, 1.2.1, 1.2.3, 1.2.4.1, 1.2.4.2, 1.2.4.3, 1.2.6, 1.3.1, 1.3.2, 1.3.4, 1.3.7, 1.3.8, 1.3.8.1, 1.3.8.2, 1.4.1,

1.4.2.1, 1.4.2.2, 1.4.2.3, 1.4.3, 1.5.1, 1.5.2, 1.5.4, 1.5.5, 1.5.6, 1.6.1, 1.6.3, 1.7.1, 1.7.3, 1.7.4, 1.7.4.1,

1.7.4.2, 1.7.4.3

The relevant technical documentation has been compiled in accordance with Annex VII, Part B of

EC Machinery Directive 2006/42/EC. We undertake, in response to a reasoned request, to supply it in

electronic form to the market surveillance authorities within a reasonable period.

The party authorized to compile the technical documentation is:

Johan Gidner, R&D Manager

The partly completed machinery must not be put into service until the nal machinery into which it is

to be incorporated has been declared in conformity with the provisions of the Machinery Directive.

Malmö, 2014-07-18

___________________________

Knud Foldschack

CEO

4 (10) HEATEX MODEL B INSTALLATION & MAINTENANCE MANUAL

TEC-1302 Ver 4-2016-05-30

ENGLISH

CONTENT

1. GENERAL _____________________________________________________________________ 5

2. AT DELIVERY __________________________________________________________________ 5

2.1. Transport ____________________________________________________________________ 5

3. STORAGE ____________________________________________________________________ 5

4. INSTALLATION ________________________________________________________________ 6

5. ADJUSTMENTS _______________________________________________________________ 6

6. MAINTENANCE _______________________________________________________________ 7

6.1. Matrix ______________________________________________________________________ 7

6.2. Hybrid/Adsorption Material ____________________________________________________ 7

6.3. Powerbelt ___________________________________________________________________ 7

6.4. Round Belt ___________________________________________________________________ 7

6.5. Brush Sealings _______________________________________________________________ 7

6.6. Controller ____________________________________________________________________ 7

6.7. Application Limits _____________________________________________________________ 8

6.8. Troubleshooting ______________________________________________________________ 8

6.9. Conditions to Fulll the Hygiene Certication Requirements __________________________ 9

7. SUPPORT ____________________________________________________________________ 9

5 (10)HEATEX MODEL B INSTALLATION & MAINTENANCE MANUAL

TEC-1302 Ver 4-2016-05-30 ENGLISH

1. GENERAL

A rotary heat exchanger with casing and drive is

“partly completed machinery” as dened in Directive

2006/42/EC. This product is delivered in compliance

with the Directive 2006/42/EC but when installed

in the complete machinery it is up to the installer to

make sure that the nal product complies with the

directive.

Special attention should be paid to sharp edges (risk

of cuts) and that when the wheel is rotating the rotat-

ing parts may cause injuries.

The surfaces of the drive motor and gear can be hot

and attention should be paid to the risk of burn in-

juries.

The sound level from the heat exchanger is less than

70 dB (A).

2. AT DELIVERY

Before installation, the following should be checked:

• Check if there are any signs of transport

damage before accepting the goods.

• Has the right exchanger been delivered? Check

type, design, size and options.

• How is the exchanger to be positioned?

• In case of any damage, please report this in

writing by fax or email as soon as possible.

2.1. Transport

• The weight of the unit can be found on the

product label attached to the unit

• Always transport the exchanger vertically.

• Lift the exchanger in the upper two aluminum

rods alternatively the gables according to

picture 1.

• It is important that all transport is carried out

by qualied staff.

All transport and handling shall be carried out by

qualied staff.

Picture 1. Lift the casing at the gables.

3. STORAGE

There are no other requirements for storage than a

horizontal even surface and out of weather. Please

note that an uneven surface can warp the cassette and

affect the factory adjustments.

Always make sure that the heat exchanger is sup-

ported and secured during transport, handling, stor-

age and installation so it cannot fall over and cause

damage or injuries.

Heat exchanger may fall over if not secured.

Please observe that there may be sharp edges and a

risk for cuts so we recommend that gloves be used

when the heat exchanger is handled.

Use gloves when handling the

heat exchanger.

6 (10) HEATEX MODEL B INSTALLATION & MAINTENANCE MANUAL

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ENGLISH

4. INSTALLATION

• When designing the air handling unit and/

or duct system, the system designer needs to

make sure it is possible to remove/pull out the

heat exchanger for inspection, maintenance,

service, cleaning and disinfection. Furthermore,

the system designer needs to consider enough

space inside and outside of the system to make

sure that it is possible to remove/pull out the

heat exchanger.

• For bigger heat exchanger units it is required

to add doors or hatches on all sides in the

air-handling unit and/or duct system making

it possible to access the heat exchanger for

inspection, maintenance, service, cleaning and

disinfection.

• In case condensate is present, it is required by

the designer of the air handling unit and/or

duct system, to design and install a condensa-

tion tray according to the norm VDI 6022,

chapter 4.3.16

• The casing is self-supporting but cannot take

up extra load e.g. ducts.

• Place the rotor on a horizontal surface since an

uneven surface can warp the casing and affect

the factory adjustments.

• Make sure that the front- and back plates of

the casing are installed perpendicular to the

horizontal bottom surface. If not the casing

may interfere with the movement of the rotor

wheel.

• In case of horizontal rotors, support is needed

for the frame and center girder. Also, check that

rotor is ordered and manufactured as a hori-

zontal rotor. Rotor may only be installed either

in a vertical or a horizontal position according

to design, not at an angle.

• Avoid diagonal ow since this can affect the

rotation and drive of the wheel. Heatex AB

recommends the airow to be perpendicular to

the rotor.

• The rotor is designed for counter ow only; co-

current ow will decrease efciency and reduce

the rotors self-cleaning ability.

• Prior to initial operation, please make sure no

objects are blocking the rotors movement. The

rotor should move evenly and smoothly around

its shaft.

Placing the unit on an uneven surface

may warp the casing.

• Drive motor if delivered with controller is

pre-wired and 230V should just be wired to

the controller. Constant speed motors are

without wiring. It is important that all electrical

work is carried out by qualied staff. Please

see enclosed documentation and/or wiring

Picture 2.

• If the unit is delivered with a variable speed

drive, read the corresponding controller

documentation.

5. ADJUSTMENTS

• If necessary, adjust the brush sealants to mini-

mize leakage.

• If the belt slides adjust belt tension.

• The round belt should have a tension of 4-6%

and Powerbelt should have a tension of 1-2%

(i.e. belt should be 1-2% shorter than the length

it travels). For Powerbelt remove one link per

meter belt to get correct tension

IMPORTANT!

All electrical work must be carried

out by qualied staff

Picture 2. Wiring diagram constant drive Δ/Y 220/380V.

7 (10)HEATEX MODEL B INSTALLATION & MAINTENANCE MANUAL

TEC-1302 Ver 4-2016-05-30 ENGLISH

6. MAINTENANCE

6.1. Matrix

To secure the function and performance, the face of

the rotor has to be inspected regularly for dust and

dirt. In most cases, the rotor is self-cleaning due to

counter ow and rotation of the matrix and this

makes manual cleaning unnecessary. If the self-clean-

ing is insufcient dirt or/and dust can appear in the

matrix. Depending on the degree of soiling it is rec-

ommended to use following cleaning.

1. For only a small amount of easily removable

dirt, Heatex recommends to use a vacuum

cleaner.

2. For heavier dirt it is also possible to use

compressed air but with caution.

3. Firmly attached dirt in the rotor is easiest re-

moved by using hot water and a mild detergent.

The mild detergent may be removed with high-

pressure water cleaner with the nozzle placed

100-200 mm from the matrix.

4. If required, Heatex recommends disinfection

with the substance known as LIV +45.

6.2. Hybrid/Adsorption Material

The adsorption material is aluminum coated with a

silica gel based coating. There is a small amount of

surplus material that might leave the matrix during the

rst time of usage. This will NOT affect the hygro-

scopic properties. The excess powder is harmless and

easy to remove using a vacuum cleaner.

The hybrid wheel properties are obtained by a com-

bination of a at strip of adsorption material consist-

ing of silica gel coated aluminum and a corrugated

aluminum strip, which result in a moisture transfer

capacity in between that of an aluminum matrix

and an adsorption matrix. Just as for the adsorption

wheel, a small amount of surplus material may leave

the matrix during the rst time of usage.

6.3. Powerbelt

The Powerbelt is subject to natural stretching which

may require shortening of the belt. Tension of the

belt must be checked after the rst 24-48 hours in op-

eration to secure the rotational function of the wheel.

The belt is made of links that can easily be added or

removed without any tools. By just twisting the belt, it

is possible to open it and remove links to shorten the

belt until correct length and belt tension is obtained.

Belt tension should be 1-2% (i.e. belt length 1-2%

shorter than travelled length). For Powerbelt remove

one link per meter belt to get correct tension.

6.4. Round Belt

In addition, the round belt may need adjustment.

When delivered from factory the belt is welded

together. If adjustment is needed the belt must be cut,

shortened and joined together again with a special

joining pin. Belt tension should be 4-6%.

6.5. Brush Sealings

Tightness between brush sealants and casing has to

be checked during inspection. The brush sealants are

easily adjusted by unscrewing the screws and moving

the brush sealant into the right position.

6.6. Controller

For further information regarding rotary heat ex-

changer equipped with controller, please see corre-

sponding controller instructions.

8 (10) HEATEX MODEL B INSTALLATION & MAINTENANCE MANUAL

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6.7. Application Limits

Recommended temperature limits for rotary heat ex-

changer:

It is however important not to exceed the temperature

limits on mounted components:

Component Min Max

Bearings -40°C (-40°F) 110°C (230°F)

Round belt -40°C (-40°F) 66°C (150°F)

Power belt -40°C (-40°F) 110°C (230°F)

Motor * -20°C (4°F) 40°C (104°F)

EMX-R controller -30°C (-22°F) 40°C (104°F)

Standard controller 0°C (32°F) 45°C (113°F)

* Thermo contacts release at 150°C (302°F) inner temperature.

Temperature inside casing is approximately the mean

temperature of supply and exhaust air temperatures.

Recommended pressure drop and differential pressu-

re for rotary heat exchanger:

• Pressure drop max 300 Pa (1.2” WC) during

start up and maintenance.

• Recommended pressure drop 100-200 Pa

(0.4-0.8” WC) during normal operation.

• Differential pressure max 600 Pa (2.4” WC).

6.8. Troubleshooting

If the rotary heat exchanger does not rotate properly,

please follow these steps to solve/locate the problem.

1. If the motor runs properly, please jump to

step 5.

2. If there is a controller installed please check

controller technical specications, chapter

troubleshooting.

3. If there is a constant drive installed: Please

check that the drive is correctly connected.

Note that all electrical maintenance and installa-

tion must be performed by qualied personal.

4. Disconnect the belt, is the motor running

correctly?

5. If the belt is sliding, please tighten the belt

according to maintenance instruction.

6. Rotate the wheel by hand (belt disconnected

from the motor). Is it possible to smoothly

rotate the wheel or does the wheel interacts

with the casing? If there is mechanical friction,

please locate the position.

7. Make sure the connected ducts do not press on

the casing making it squeeze against the wheel.

Make sure the diagonal measures of the casing

side where the motor is positioned are equal.

9 (10)HEATEX MODEL B INSTALLATION & MAINTENANCE MANUAL

TEC-1302 Ver 4-2016-05-30 ENGLISH

• Purge sector is required in order to make sure

that less carry-over than 3% is reached.

• The AHU needs to be designed with hatches or

openings towards all 4 open sides of the rotary

heat exchanger. The heat exchanger itself has

all 4 sides open according to the picture 3.

• All surfaces inside and outside of the rotor cas-

ing, especially the bottom surface and around

the motor should be reachable for maintenance,

cleaning and disinfection. Meaning that the

openings or hatches mentioned in the item

above need to be of sufcient size to fullling

the cleaning and disinfection requirements.

• The AHU needs to be designed in such a way

that the rotary heat exchanger is possible to

slide out for cleaning and disinfection.

• Cleaning and disinfection of the heat exchang-

er should be done in accordance with Heatex

cleaning and disinfection instructions with the

cleaning and disinfection substances prescribed

by Heatex.

• When condensation is present, the AHU

installer needs to make sure that condensation

trays are installed beneath the heat exchanger.

These trays need regular inspection, cleaning

and disinfection.

• The trays should be designed and installed

with sufcient drainage in accordance with the

hygiene standard VDI 6022, chapter 4.3.16.

• The heat exchangers are not certied for in-

stallation in exhaust classes ETA 3 and ETA 4

according to EN 13779 (09/2007).

7. SUPPORT

For questions or information regarding this product,

please communicate your order number and product

code along with your message.

Heatex is available for support during ofce hours:

8 am – 4.30 pm (GMT +1) on weekdays.

Picture 3. All 4 sides are open on the heat exchanger.

The AHU designer and installer need to have openings

or hatches on all of these 4 sides in the AHU for easy

access during maintenance, cleaning and disinfection of

the heat exchanger.

6.9. Conditions to Fulﬁll the Hygiene Certiﬁcation Requirements

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