FläktGroup eQ Hygienic design Installation and Maintenance Manual

Brand: FläktGroup

Model: eQ Hygienic design

Type: Installation and Maintenance Manual

Contents Page

Hygienic version..................................……………………………….. 2

Delivery.........................................……………………………………..... 2

Safety precautions..........................………………………………...... 2

Mounting on the floor....................………………………………........ 3

Suspending from the ceiling................…………………………….. 4

To install the drainage water trough......……………………….... 5

To clean the casing...........................……………………………….... 5

To clean the finned-tube coils............…………………………...... 5

To clean the fan..............................…………………………………..... 5

To clean the rotary heat exchanger........………………………... 5

To clean the plate heat exchanger.........…………………………. 6

To disinfect the air handling unit............………………………….. 6

EQGA AND EQGB HYGIENIC VERSION,

CODE SUFFIX I = 3 AND 4

ASSEMBLY AND MAINTENANCE INSTRUCTIONS

EQGA AND EQGB, HYGIENIC VERSION, CODE SUFFIX I = 3 AND 4

Assembly and maintenance instructions

FläktGroup DC_8946GB 20220421_R1 Specifications are subject to change without further notice

DELIVERY

The hygienic air handling unit is delivered in accordance with

one of the following alternatives:

• As one delivery unit, i.e. one factory-assembled block unit.

• As one delivery unit, i.e. one factory-assembled unit mounted

on a base frame.

• Several block units, which must be connected to form one unit

on site.

SAFETY PRECAUTIONS

Lifting and transport of air handling units, mounting them on a

base frame and fitting them with support feet, the docking of

blocks, safety precautions and inspection prior to commissioning

are specified in the General instructions, Safety Precautions,

8658 GB.

Window for

easy inspection

Hygienically approved

non-metallic components

Thermal insulation to class T3

Condensation insulation to class TB3

Aluzinc or stainless casing

Casing to leakage

class L2

Bag ﬁlters, HEPA- or

carbon ﬁlters

Wall mounted fan or ﬂoor

mounted fan with integrated

or fully sealed fan beams

without sharp edges

Cleanable ﬂoor

without grooves

Provision for coil

with cleanable drip

tray

Components which

are simple to clean,

for example coils,

rotary heat exchang-

ers and plate heat

exchangers

Large inspection

spaces

HYGIENIC VERSION

EQGA AND EQGB, HYGIENIC VERSION, CODE SUFFIX I = 3 AND 4

Assembly and maintenance instructions

FläktGroup DC_8946GB 20220421_R1 Specifications are subject to change without further notice

MOUNTING ON THE FLOOR

The floor on which the unit is placed must be flat, to ensure pro-

blem-free operation. Check the floor carefully to avoid distortion

of the unit and thus ensure that the doors will not be difficult to

open and close. EQAZ-05 adjustable feet are available to allow

for individual height adjustment of the EQAZ-04 base frame.

Place the support washer (supplied) under the foot as shown in

Figure 8. It is important to make sure that the unit is level. If the

air handling unit includes unit sections that are

provided with drains, space must be available for a water trap

(such as the EQAZ-08) as shown in Fig. 9.

Adjustment of the lateral and longitudinal position of the air hand-

ling unit is best carried out by means of a roller crowbar or the

like, as shown in Figures 10 and 11.

N.B! The air handling unit should slope 2 % towards the inspection

side to allow for drainage during cleaning. Flushing water can be

collected in EQWZ-02 drainage water trough (accessory).

MOUNTING ON ADJUSTABLE FEET

Mount the feet spacing them evenly along the side beams if

more than 4 feet are to be fitted. If 4 feet are used, fit one foot at

each end of the side beams.

To adjust the adjusting screw:

1) Back off the locking nut (A).

2) Adjust the height with set screw (B).

3) Lock the locking nut (A).

Block unit without base frame

Block unit on EQAZ-04 base frame

Fig. 7

Fig. 8

EQWZ-02

EUGA Fig 8

Free space for water trap

= min. 150 mm

15 mm

gap in

the end of

the base

frame

Fig. 9

Fig. 10

Fig. 11

EQGA AND EQGB, HYGIENIC VERSION, CODE SUFFIX I = 3 AND 4

Assembly and maintenance instructions

FläktGroup DC_8946GB 20220421_R1 Specifications are subject to change without further notice

SUSPENSION FROM THE CEILING

Place the unit on a stand made on site as shown in the examples

below. Suspend the unit from hangers.

The larger units must be fitted with EQAZ-29 floor grating so

that service personnel can enter the air handling unit.

The stand must also be constructed so that the bottom panels

are supported by either traversing or longitudinal support beams.

HEAVY-DUTY INSTALLATION

Suitable installation for unit sizes 005-216

Example 1

Important!

The position of the hangers can be easily ad-

justed with the stand according to the figure.

N.B!

The tensile strength verification must be issued

by an authorized HVAC installation engineer.

Retaining flange A – max. 35 mm along the inspection side on

unit sizes 005-090.

Cut and remove the edge of the flange ”A” at the hinge locations

on unit sizes 005-090.

Retaining flange A – max. 75 mm along the inspection side on

unit sizes 081-216.

HEAVY-DUTY INSTALLATION

Suitable installation for unit sizes 005-216

Example 2

max. 1,5 m

min. 800

Hanger

Clamp

View A

Hanger

cc max 600cc max 600

View A

Hanger

N.B!

If the unit is fitted with a EQWZ-02 water drainage

trough, the edge of the flange (A) should only be

by the corner frame members of the casing.

View B

cc max 600cc max 600

EQGA AND EQGB, HYGIENIC VERSION, CODE SUFFIX I = 3 AND 4

Assembly and maintenance instructions

FläktGroup DC_8946GB 20220421_R1 Specifications are subject to change without further notice

TO INSTALL THE DRAINAGE WATER TROUGH, EQWZ-02

The drain water trough is supplied as a loose part and should be

fitted after the air handling unit has been docked. Place the drain

water trough onto the mounting angle bracket and fasten it with

the screws supplied (see illustration).

TO CLEAN THE CASING

Carry out the following before cleaning the interior of the casing:

• Remove the filters

• Remove the withdrawable filter frame

• Remove the withdrawable sound attenuating baffles

• Remove the withdrawable droplet separators

• Remove anti-skid devices, if fitted

• Remove withdrawable drip trays

CLEANING

1. Vacuum-clean surfaces to remove loose dust.

2. Apply suitable dirt and degreasing agent such as cold de-

greasing agent on interior surfaces.

3. Flush the surfaces clean with clean water after a few

minutes. N.B! Do not use a high-pressure spray gun.

The flushing water is collected in the drain water trough which

can be connected to a drain or a collection vessel.

CLEANABLE COILS FOR HYGIENE APPLICATIONS

All coils with hygiene fins are fully cleanable according to the

standards VDI3803 and VDI6022. This means that the coil can

be cleaned with a high-pressure water system right through

the core. The cleaning nozzle used for coils with a fin pitch of

2.0-2.5 mm and deeper than six tubes is THD Power Clean

manufactured by TECHNISCHER HYGIENE DIENST GMBH

(E-mail: [email protected], web: www.thd.info). If the coil is six tubes

deep or less, an ordinary nozzle can be used.

1. Make sure that no sensitive equipment, either inside or out-

side the unit, can be harmed by the water.

Be extra careful not to damage the filter. If the unit has an

empty section (EQTC), use the special drip plate to protect

the rest of the unit.

2. Clean the coil with a high-pressure cleaner. If the coil is

deeper than six tubes, a THD Power Clean is needed to ensure

a full cleanability.

3. Point the nozzle at a 45-degree angle to have a free passage

for the water jet through the coil. Make sure that the water

penetrates the coil.

4. Remove all dirt.

5. Dry all surrounding parts in the unit.

CLEANING THE FAN

1. Open the inspection panel if the centrifugal fan section

has one.

2. Vacuum-clean the fan to remove dry dust.

3. Apply suitable dirt and degreasing agent such as cold

degreasing agent on the fan blades, motor (degree of

protection IP54) and other surfaces.

4. Flush with clean water after a few minutes. N.B!

Do not use a high-pressure spray gun.

5. If the fan casing is equipped with a means for drainage,

the water will run out on the floor of the unit casing and be

collected in the drainage water trough. Otherwise, wipe

the interior of the fan casing dry with a cloth.

TO CLEAN THE ROTARY HEAT EXCHANGER

1. Vacuum-clean the surface of the rotor to remove dry dust.

2. Apply suitable dirt and degreasing agent such as cold

degreasing agent onto the rotor surface and other surfaces.

3. Flush after a few minutes with a high-pressure spray gun.

Aim the jet of water at right angles towards the rotor struc-

ture. The spray nozzle should appropriately be held approx.

50 mm away from the face surface of the rotor. Suitable

pressure: up to 80 bar.

4. Vacuum-clean to remove water or blow surfaces clean with

compressed air.

Important!

Do not use methyl ethyl ketone, aceton or

corrosive liquids.

EQGA AND EQGB, HYGIENIC VERSION, CODE SUFFIX I = 3 AND 4

Assembly and maintenance instructions

FläktGroup DC_8946GB 20220421_R1 Specifications are subject to change without further notice

TO CLEAN THE PLATE HEAT EXCHANGER

1. Vacuum-clean the surface of the rotor to remove dry dust.

2. Apply suitable dirt and degreasing agent such as cold de-

greasing agent onto the heat exchanger surfaces.

3. Flush after a few minutes with a high-pressure spray gun.

The spray nozzle should be held 3-5 cm from the face sur-

face. Suitable pressure: up to 80 bar.

EQRZ-01 flushing water tray is an accessory for collecting

flushing water on the supply air side.

4. Vacuum-clean to remove water or blow surfaces clean

with compressed air.

5. Clean the flushing water tray and drip tray.

6. Clean the droplet separator, if fitted.

DISINFECTION

If disinfection is required, for example, in hospital environments,

after finishing the cleaning procedure described the above, the

surfaces can be treated e.g. with any of the following agents:

• 5 % chlorinated solution

• 6 % hydrogen dioxide solution

• Hydrogen dioxide mist

• 10 -15 % isopropyl alcohol

• Hydrogen peroxide

Apply the cleaning agent on all the surfaces inside the air hand-

ling unit.

Warning!

If a nozzle of a size delivering 2 litres/min at

7 bar is used, the supply pressure to the spray

gun must not exceed 25 bar since the nozzle

is inclined at an angle of 20 º to the face surface,

and if the pressure is higher, the face surface

may be deformed.

Warning!

Wear protective gloves and protective

face mask. See the protection and safety

instructions for the relevant cleaning agent.

Supply air at the bottom

Supply air uppermost

Extract air

Supply air

The droplet separator,

if fitted, can be removed

by lifting and folding it.

Drip tray for collecting

condensate and

flushing water

Flushing

water tray

EQRZ-01

Flushing water tray

EQRZ-01

Drip tray for collecting

condensate and

flushing water

Make sure that the damper blades are open when you

flush them clean

FläktGroup eQ Hygienic design Installation and Maintenance Manual

FläktGroup eQ Hygienic design Installation and Maintenance Manual

FläktGroup eQ Hygienic design Installation and Maintenance Manual

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