Mandik M Series Leitfaden
Air-handling Units MANDÍK
INSTALLATION
COMMISSIONING
MAINTENANCE
Addition instructions of the hygienic design
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Contacts:
MANDÍK, a.s.
Dobříšská 550
267 24 Hostomice
Česká Republika
tel: +420 3 706 706
fax: +420 3 584 8 0
email: [email protected]
service department: [email protected]
This manual is an integral part of the technical specifications TPM 088/ 2 Air-handling
Units MANDÍK.
© Copyright MANDÍK, a.s. 202 . Subject to change.
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CONTENTS
GENERALY ....................................................................................................................... 4
INSTALLATION ............................................................................................................... 5
COMMISSIONING ........................................................................................................... 6
OPERATION AND MAINTENANCE................................................................................... 7
4.
SERVICE ACCESS .................................................................................................... 0
4.2
REMOVAL AND CLEANING OF THE DOOR SEALING PROFILE ...............................
CLEANING AND DISINFECTION ..................................................................................... 2
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1GENERALY
This document is an extension and an integral part of the general installation manual of
MAN ÍK air conditioning units, series M / P / T / M + / P + / T + (hereinafter AHU),
enclosed with each AHU delivery. Available at
https://mandik.cz/getattachment/df87c4cc-4bf8-4b0d-8ca8-f18adcd08381/AHU-
Control-and-Commisioning-Guide.aspx.
This document specifies the necessary requirements for AHU in a hygienic design for
proper installation, commissioning and maintenance.
AHUs are designed and manufactured in accordance with the following valid norms:
VDI 6022, Blatt
VDI 3803
SWKI VA 04-0
ÖNORM H 602
DIN EN 3779
EN 886
DIN 946-4
SWKI 99-3
ÖNORM H 6020
The design of the AHU is certified by a German authorized person - Hygiene-Institut des
Ruhrgebiets (www.hyg.de). Certificate is available at https://mandik.cz/product-line/air-
handling-units/air-handling-units-mandik
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2INSTALLATION
First, it is necessary to follow all instructions for assembly and installation according to
the general AHU installation manual!
•before installation, the components shall be checked for cleanliness (simple visual
assessment will suffice) by qualified personnel having at least Category A
qualification according to VDI 6022 Part 4
•it is recommended not to schedule the assembly until after completion of dust-
relevant activities in the building
•any packaging and the protection of the component shall only be removed
immediately prior to assembly
•before and during interruptions of assembly work, any open ends or exposed
surfaces shall be protected against the penetration of construction site dust and
moisture
•even after installation is complete, it shall be possible to inspect the AHU with
reasonable technical effort
•if the AHU has been put into operation before the commencement of specified
normal operation of the building, the demonstration of cleanliness and, if
required, cleaning of the air-handling unit including all air ducts shall be
performed immediately before starting specified normal operation
•suitable cable glands shall be used for feed-through of electric cables; pipes shall
be sealed with suitable escutcheons. Cables shall, if possible, be laid outside the
unit. Inside the unit, they should preferably not be laid in conduits and cable
routes should be as short as possible
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Each connection of the two chambers must be additionally sealed inside with a special
sealant from the mounting kit, see the following figure. The sealant must be certified
according to V I 6022 for microbial inertness according to the ISO 846 standard
(method A + C) !!!
before applying after applying
3COMMISSIONING
First, all commissioning instructions according to the general AHU installation manual
must be observed!
•before commissioning, an initial hygiene inspection shall be carried out in
accordance with V I 6022, Blatt 1, Section 7. This inspection is focused on
compliance with the design requirements in accordance with V I 6022, Blatt 1,
Section 6.
•before commissioning the intended air filters properly shall to installed
•before commissioning, check that all inspection and cleaning openings and drains
for cleaning are securely sealed. All condensate drains shall be tested with a
seal around the perimeter of the chamber
use a cover ledge in the case of two
neighboring condensate tray !
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sufficient quantity of water. Quick and complete drainage shall be watched and
documented. This ensures initial filling of the drain traps with sealing water.
•during lifting operations, sealing joints in the unit casing are subject to mechanical
stresses. They shall be checked for tightness.
•it is recommended to equip the system with new, clean air filters after
commissioning and prior to handing the system over to the customer
4OPERATION AND MAINTENANCE
First, all commissioning instructions according to the general AHU installation manual
must be observed!
AHU shall be operated in such a manner to avoid microbial growth on surfaces of air-
handling components, especially air filters, and on surfaces which are wet for technical
reasons. Access to the system components for periodic maintenance shall be ensured!
•in case of short standstills of AHU, as, e.g., when switched off during night times or
for maintenance purposes, the installed dampers (outdoor air, exhaust air and, as
the case may be, supply air) shall close automatically to prevent air from flowing
through the system due to wind or buoyant forces
•additionally, in case of extended standstills of AHU (more than two days), it has
to be ensured that any wet surfaces shall be blown dry! (inner casings, coolers,
evaporators, recovery heat exchangers, condensate tray, humidifiers, …)
The respective switching commands required for automatic dry-blowing shall be
entered in the building automation system.
• The AHU must be regularly inspected at short intervals by trained specialist
personnel to ensure that the hygienic requirements for operation and
maintenance are observed at all times! Hygienic inspections beyond standard
procedures (general installation manual AHU MAN ÍK) are summarized in the
following table:
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3 6 2 24
1. AHU IN GENERAL/CASING/INLTES-OUTLETS
.0 . Clean and repair
.02. Clean
.03. Repair
.04. Clean and repair
Check doors/service accesses for tightness
Check door´s sealing for contamination, microbial
growth, damage
Action if required
Months (intervals)
CHECKLIST FOR OPERATION AN MAINTENANCE OF AHU
Activity
Check for air-side contamination, microbial growth,
damage, and corrosion
Check for condensation and water pooling
2. AIR FILTERS
2.0 . Change affected air
filters
2.02. Repair or replace
2.03. Replace filter stage
2.04.
2.05. Maximum interval until 2. filter
stage is to be changed
Maximum interval until . filter stage is
to be changed
Check differential pressure
Check for unacceptable contamination, damage
(leaks), odours and microbial growth
Check proper tightness of sealing between filters-
filter frame and filter frame-casing
3. FANS
3.0 . Clean and repair
Check contamination, microbial growth,
damage, and corrosion
4. HEAT EXCHANGERS
4.0 . Clean and repair,
replace
4.02. Clean and repair
4.03. Clean and repair
Heaters: Check for contamination, microbial
growth, damage, corrosion, and tightness.
Coolers: Check tube bundle, droplet
eliminator and condensate tray for
contamination, microbial growth, corrosion,
damage, and tightness.
Check drain trap function
5. HEAT RECOVERY
5.0 . Clean, repair
5.02. Repair
5.03. Clean, repair
5.04. Adjust seals, clean,
repair
Check contamination, microbial growth,
damage, corrosion
Check impermeability between supply and
exhaust air
Check condensate tray for contamination and
drain trap function
rotary heat exchangers: check of rotor sealing
tightness
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6. STEAM HUMI IFIER
6.0 . Clean, repair
6.02. Clean, repair
6.03. Clean
6.04. Repair
6.05. Repair
Function-check control valve
Check humidity limiter
Check steam distribution for deposits
Check contamination, microbial growth,
damage, corrosion
Check condensate tray for contamination and
drain trap function
7. EHUMI IFIERS
7.0 . Clean, repair
7.02. Clean, repair
Check contamination, microbial growth,
damage, corrosion (casigns, heat exchanger,
droplet eliminator)
Check condensate tray for contamination and
drain trap function
8. SILENCERS
8.0 .
Clean, repair or
replace; test with
contact slides if
necessary
Check contamination, microbial growth,
damage, corrosion (casigns, coulisses)
•shorter or longer intervals of hygiene checks can be required/be allowed based on
the result of the hazard assessment according to VDI 6022, Blatt , Section 7.5
•extension of check intervals is subject to a well-grounded air-hygiene report by
an expert, e.g. a VDIcertified specialist engineer
•for each AHU, the operator shall maintain an operations log according to VDI
6022, Blatt 4
•Filters - during the air filters changing, any contamination of the environment,
downstream air-conditioning units, and the rooms to be ventilated shall be
avoided. Particular care shall be taken to prevent contamination of the new air
filters to be installed. Personnel involved in changing filters shall wear suitable
protective equipment. Air filters shall be stored in a dry and clean place such
that damage, contamination or moistening can be excluded.
•Steam humidifiers - shall be operated in such a manner that no condensate or
aerosol can enter the air duct system and shall not contain any substances
harmful to health. When the system is shut down, it has to be ensured that the
air humidifiers are switched off early enough to be blown dry while the system is
still running.
•The mandatory tests - microbiological testing of water/surfaces, air measurement,
determination of clean-swept condition, … and its terms of the assessment values,
the required qualifications, the measurement procedure, and the evaluation of
the measurement results are beyond the scope of this manual and these points
are described in VDI 6022, Blatt , Section 8.
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4. SERVICE ACCESS
For cleaning and disinfection is each section (fans, filters, heat exchangers, silencres, …)
accessible from both sides via doors or service panels:
heat exchanger´s section
light switch
service door
with handles/hinges
service door with
clamping brackets
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