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Comefri TZAF FF series Operating And Maintenance Instructions Manual

Comefri TZAF FF series Operating And Maintenance Instructions Manual

Air conditioning division, radial fans, plenum fans

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Air Conditioning Division
OPERATING AND MAINTENANCE INSTRUCTIONS OF RADIAL FANS
TZAF FF – VTZ – NTHZ - THLZ FF – MAZ – MHZ – TLZ – TLI – TZAF -
THLZ* - HLZ* - TLE – THLE – KHLE
AND PLENUM FANS
NPL – NPL
– NPA – NPA
ALU
(This manual includes the fan and plenum fan arrangement according to
standard EN 14986 to comply with "ATEX" Directive 94/9/EC)
* THLZ sizes over 450, HLZ, PEAF, NPE series currently not in production but available for spare parts in compliance with this manual.
1
FOREWORD
All Comefri fans and plenum fans are manufactured according to our Quality Assurance
System, in compliance with BS EN ISO 9001; since 1987 our Quality System is certified
by BSI (certificate n° FM 01403). Moreover all fans and plenum fans equipped with motor
are tested accurately before leaving the factory.
Comefri fans and plenum fans are placed on the market in conformity with the
requirements of "ErP" Directive 2009/125/EC and its relevant Regulation N° 327/2011
implementing the Directive in regard with the different product characteristics in terms of
manufacturing and supplying (see par.8);
they are of the state of the art design and comply with the requirements for health and
safety of the Machinery Directive 2006/42/EC.
Comefri defines:
Machine
All fans and plenum fans equipped with connected motor and drive, provided with all the
protections necessary to meet the requirements of the Machinery Directive 2006/42/EC.
Partly Completed Machinery
All other fans and plenum fans which are not included in the previous definition.
This Operating &Maintenance manual (which can be downloaded on www.comefri.com):
- describes the applications for the fans and plenum fans according to the national Stan-
dards, Regulations and Directives, which must be closely observed to avoid possible
damage caused by incorrect installation or mishandling;
- contains notes for health and safety;
- warns of danger which can even occur with correct applications;
- must be read and observed by all personnel. These indications are not the only safety
procedure: any operations made on moving and/or electrical parts, such as installation
and maintenance, require special attention guaranteed only by skilled staff familiar with
safety rules. Besides observance of these instructions, local laws must also be
respected.
- must be accompanied by the relative technical catalogue of the individual product which
Operating and Maintenance Manual - Air Conditioning Division
– TE – PEAF* – NPE*
ALU
must be consulted for all specific information not included in this manual.
The warranty is valid for one year from the delivery date unless otherwise agreed prior to
placing the order. The warranty is only applicable to manufacturing defects, which must
be immediately reported to the manufacturer. A precondition of the warranty is the
observance of the operating instructions. Damage which can be traced back to improper
installation procedures, to the use of damaged fan or plenum fans or unauthorized
alterations to it, such as repairs, are not covered by the Comefri warranty and Comefri is
not liable for resulting damage and costs.
2
TECHNICAL DESCRIPTION
2.1 Fan description
The Comefri fan series TZAF FF, VTZ, NTHZ, THLZ FF, MAZ, MHZ, TLZ, TLI, TZAF,
(i)
THLZ, HLZ, TLE, THLE, KHLE
are centrifugal fans where the air flows axially into the
wheel and is discharged radially in the volute. The performances allow medium and low
air deliveries and medium and high pressures. See the technical documentation in the
relative technical catalogue for the performance of the specific fan. The impellers of our
centrifugal fans can be fitted with forward-curved blades, backward-curved blades or
airfoil backward-curved blades.
The MAZ and MHZ series have more solid features than the TZAF FF and NTHZ series
which makes them specific for heavy-duty air conditioning and industrial applications
where reliability, solidity and easy maintenance play a vital role.
(i)
The KHLE series is a "kompakt" version of THLE series with the casing sideplates of rectangular
shape, available in settings 4 or 5, with the same performances of THLE
The features of each fan series are specified in the technical catalogue that must be
consulted to identify the suitability of the fan for the fluid treated by the system.
Comefri centrifugal fans, with double or single inlet, can be completed with a wide range
of accessories, according to application and installation requirements. The range of
accessories is also completed by protection fittings, in conformity with UNI EN ISO
13857, available on demand. Comefri declines all liability for damage to persons or
objects caused by absence of safety devices or by the use of devices not provided by
Comefri.
Particular attention must be paid in case of direct contact with rotating parts. If this is the
case, the use of specific and adequate personal protective measures (PPE) is essential.
2.2 Plenum Fan impeller description
The Comefri plenum fan series have centrifugal impeller where the air flows axially into
the wheel and is discharged radially outward.
NPL, NPL
, TE, NPE plenum fan series have backward-curved blades while the NPA,
ALU
NPA
, PEAF plenum fan series have airfoil backward-curved bladed impellers. The
ALU
performances allow medium and low air deliveries and medium and high pressures. See
the technical documentation in the relative technical catalogue for the performance of the
specific plenum fan.
The features of each plenum fan series are specified in the technical catalogue that must
Make sure that the fan is always accompanied
by this manual.
.
1/42

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Summary of Contents for Comefri TZAF FF series

  • Page 1 THLZ* - HLZ* - TLE – THLE – KHLE alterations to it, such as repairs, are not covered by the Comefri warranty and Comefri is AND PLENUM FANS not liable for resulting damage and costs.
  • Page 2 4 in conformity with UNI EN ISO 13857, available on demand. Comefri declines all liability for any damage to persons or objects caused by absence of safety devices or by the use of devices not provided by Comefri. Particular attention must be paid 2.5 Fans and Plenum Fans with spark-proof execution...
  • Page 3 Zone 2 is an area where an explosive concentration of flammable Comefri TZAF FF Atex, VTZ Atex, NTHZ Atex, THLZ FF Atex, MAZ Atex, MHZ Atex, TLZ Atex, material is not expected and should it be released it will only exist for a very short period of time.
  • Page 4 Comefri fans and plenum fans (casings, supporting structures, guards, protective enclosure and Category 2 fans, temperature monitoring devices have to be installed, which in case of a other external parts) are of a rigid design.
  • Page 5 -- Impellers pulleys. Comefri TZAF FF Atex, VTZ Atex, NTHZ Atex, THLZ FF Atex, MAZ Atex, MHZ Atex, TLZ Atex, These protections are fixed with brass screws. TLI Atex, TZAF Atex, THLZ Atex, HLZ Atex, TLE Atex, THLE Atex, KHLE Atex, NPL Atex, NPA Atex, TE (in steel ) Atex impellers are of a rigid design.
  • Page 6 Copper plates in front of rotating parts (pulleys, hubs, back-plate, etc.) have an outer dimension The materials used for the impeller, fan casing of Comefri TZAF FF Atex, VTZ Atex, NTHZ Atex, at least from 5 to 10 mm greater than rotating part dimension; clearance between the motor or THLZ FF Atex, MAZ Atex, MHZ Atex, TLZ Atex, TLI Atex, TZAF Atex, THLZ Atex, HLZ Atex, fan shaft and the edge of the passage hole is designed as indicated here above.
  • Page 7 Make sure that the fan is always accompanied Operating and Maintenance Manual - Air Conditioning Division by this manual. As exception fan or plenum fan can be supplied without protections provided both the following Max RPM Max RPM Max RPM Max RPM Fan Model Arr.
  • Page 8 Make sure that the fan is always accompanied Operating and Maintenance Manual - Air Conditioning Division by this manual. Duplex EXECUTION AISI 316 and AISI 316 L EXECUTION Max RPM Max RPM Max RPM Max RPM Max RPM limits are the same for execution with stop bushing and with seeger ring Fan Model Arr.
  • Page 9 Make sure that the fan is always accompanied Operating and Maintenance Manual - Air Conditioning Division by this manual. MAZ Atex, MHZ Atex TZAF FF Atex, NTHZ Atex object of the Category 2G certification. The fan shaft must be installed in a horizontal position. -- Bearings The L minimum life shall not be less than 40000 hours.
  • Page 10 Make sure that the fan is always accompanied Operating and Maintenance Manual - Air Conditioning Division by this manual. AISI 304 and AISI 304 L EXECUTION Max RPM Max RPM Max RPM Max RPM limits are the same for execution with stop bushing and with seeger ring Fan Model Stop Seeger...
  • Page 11 Make sure that the fan is always accompanied Operating and Maintenance Manual - Air Conditioning Division by this manual. Duplex (except. from more stringent limits according to the motor model and brand installed); Max RPM Max RPM Max RPM gas explosion Groups IIA and IIB; temperature class T3 Fan Model Stop...
  • Page 12 Make sure that the fan is always accompanied Operating and Maintenance Manual - Air Conditioning Division by this manual. -- Operational limits Maximal permissible rotational speed of NPL Atex plenum fan series in dependence of the wheel material: -- Application limits as declared in the Technical Documentation deposited by the Notified Body Max RPM Standard material AISI 304, AISI...
  • Page 13 Make sure that the fan is always accompanied by this manual. Operating and Maintenance Manual - Air Conditioning Division Ignition risk assessment Potential ignition source Measures applied to prevent the source from becoming Ignition protection used effective Normal operation Expected malfunction Selection of unsuitable fan / Compare process requirements with fan label data EN 14986 7.3;...
  • Page 14 Make sure that the fan is always accompanied by this manual. Operating and Maintenance Manual - Air Conditioning Division Potential ignition source Measures applied to prevent the source from becoming Ignition protection used effective Normal operation Expected malfunction Bearing failure Bearings replacement (Safe operational life depending on EN 14986 4.17;...
  • Page 15 Make sure that the fan is always accompanied by this manual. Operating and Maintenance Manual - Air Conditioning Division 2.5.5 Caption of fan label for anti-spark execution GROUP II, Category 2 GROUP II, Category 3 For a fan in Category 2, respect to the label of a fan in Category 3 (to which refer for the detailed fields description), is compiled also the further field “Certificate No.”...
  • Page 16: Handling And Storage

    (characteristic dimensions, distance and can be reported to the insurance company. Comefri will not be responsible for the diameter fixing holes, weight, etc…) transport and the handling of the device at the customer's premises.
  • Page 17 Motors with rated power up to 4kW can be direct started, while Standard Comefri fans and plenum fans are designed to work with the shaft in a horizontal for those with rated power beyond 4kW star/delta soft starting is position.
  • Page 18 (pulley, etc). Comefri recommends not to use the fan in this In par.2.5.3 are indicated the provisions arranged to prevent risk from accidental contact zone, but it must absolutely NOT be used in this zone when spark-proof execution is as required by the relevant Standard.
  • Page 19 When fan and/or plenum fan have been stored at temperature lower than normal It is duty of Comefri to install the motor on fans of Group II Category 2 before putting the storage temperature shall be let warming-up gradually and slowly before start-up (see fan in the market.
  • Page 20: Maintenance

    Make sure that the fan is always accompanied by this manual. Operating and Maintenance Manual - Air Conditioning Division by exchanging internal connections, as described on the motor plate or wiring diagram. Always observe the electrical safety instructions. 6.2 Casing and impeller 5.3 Checking current consumption Even with slightly dusty fluids, wear and filth can also be expected inside the casing and on the impeller (corrosion, abrasions, stuck materials) which can cause vibrations.
  • Page 21 2. Tighten the socket head cap screw in the threaded holes Therefore Comefri strongly recommends performing periodical controls on the 3. Pull the clamping bush out of the tapered hole bearings even before the lubrication deadline.
  • Page 22 Make sure that the fan is always accompanied by this manual. Operating and Maintenance Manual - Air Conditioning Division must be changed after the bearing has been re-lubricated a number of times or if the grease is caked, darkened or faded (compared to its original color). 2.
  • Page 23 - Motor Replacement If damaged, motor can be substituted by the customer and/or user maintaining the Comefri Atex certification provided that: - Inspections...
  • Page 24: Troubleshooting

    Make sure that the fan is always accompanied by this manual. Operating and Maintenance Manual - Air Conditioning Division TROUBLESHOOTING MANUFACTURER'S DECLARATIONS We hereby declare that the following machinery or partly completed machinery or parts of Problem Cause Corrective action machinery are built to be assembled with other machinery, partly completed machinery or Impeller rubs Adjust impeller and/or inlet-cone...
  • Page 25 Make sure that the fan is always accompanied by this manual. Operating and Maintenance Manual - Air Conditioning Division 25/42...
  • Page 26 Efficiency grade at optimum energy efficiency point [η η η η target]: Efficiency grade calculated at the point of optimal energy efficiency From the 1st January 2013 on every Comefri fan and plenum fan is sticked a ‘ErP’ label Calculation of fan efficiency assumed use of a VSD: that lists clearly product data and informations required by Regulation (EU) N°...
  • Page 27: Spare Parts

    Operating and Maintenance Manual - Air Conditioning Division SPARE PARTS RESIDUAL RISKS Only original Comefri spare parts can be used according to the spare parts list. Comefri Comefri fans have been designed and developed in compliance with design ° will not be held liable for damage resulting from use of other spare parts.
  • Page 28 Make sure that the fan is always accompanied by this manual. Operating and Maintenance Manual – Air Conditioning Division APPENDIX Settings for Plenum Fans (figures from reference catalogue) AVAILABLE SETTING SPECIAL SETTING Setting 11 - Dimensions: NPL 250 to 1400, 200 to 500, Impeller and inlet-cone NPA 315 to 1600,...
  • Page 29 Make sure that the fan is always accompanied by this manual. Operating and Maintenance Manual – Air Conditioning Division Table 1 Belt transmission Belt type Test load for each belt f (N) Smaller pulley diameter d k Belt bending for distance between shaft centres of 100mm E (mm) (mm)
  • Page 30 Make sure that the fan is always accompanied by this manual. Operating and Maintenance Manual – Air Conditioning Division Table 2.2 - THLZ FF T1, TLZ T, TLI T, THLZ T, TLE T, THLE T Fan size Bore Unit Non-split Bearing Unit Non-split...
  • Page 31 Make sure that the fan is always accompanied by this manual. Operating and Maintenance Manual – Air Conditioning Division Table 2.6 - TZAF FF B / R, VTZ B / R, NTHZ B / R, TZAF B / R Fan size Bore Unit Rubber ring...
  • Page 32 Make sure that the fan is always accompanied by this manual. Operating and Maintenance Manual – Air Conditioning Division Table 2.9 - TZAF FF T2, NTHZ T2, TZAF T2 Fan size Bore Unit Bearing Unit Bearing Unit Non-split Bearing Non-split Non-split (mm) bearing...
  • Page 33 Make sure that the fan is always accompanied by this manual. Operating and Maintenance Manual – Air Conditioning Division Table 2.11 - MAZ T2L, MHZ T2L Fan size Bore Unit Non-split Bearing Unit Non-split Bearing Unit Non-split Bearing (mm) bearing block bearing block bearing block...
  • Page 34 Make sure that the fan is always accompanied by this manual. Operating and Maintenance Manual – Air Conditioning Division Table 2.14 - NPA T1, NPE T1, PEAF T1 SETTING 11 Fan size Bore Unit Non-split bearing Bearing Unit Non-split Bearing Unit Non-split Bearing...
  • Page 35 Make sure that the fan is always accompanied by this manual. Operating and Maintenance Manual – Air Conditioning Division HOW TO ESTABLISH THE AMOUNT OF GREASE FOR RE-LUBRICATION AND INITIAL FILLING identify the fan TYPE and SIZE in table 2 find the technical bearing specifications: - bore - split or non-split type;...
  • Page 36 Make sure that the fan is always accompanied by this manual. Operating and Maintenance Manual – Air Conditioning Division Table 4 - Grease quantity for re-lubrication of non-split pillow block bearings ** MAZ T1, MHZ T1 450-500 Fan size 355-400 560-630 710-800 900-1000...
  • Page 37 Make sure that the fan is always accompanied by this manual. Operating and Maintenance Manual – Air Conditioning Division Table 8 - Grease quantity for initial filling or complete re-filling for SKF SNL/SE type split-housing with pillow block roller bearings Fan size 710, 800, 900, 1000 THLZ 1120, 1250;...
  • Page 38 Make sure that the fan is always accompanied by this manual. Operating and Maintenance Manual – Air Conditioning Division Table 13 - Grease quantity for re-lubrication of SKF SNL/SE type split-housing with pillow block ball bearings NPA, NPE, PEAF Setting 11 Fan size 355, 400 Ø...
  • Page 39 Make sure that the fan is always accompanied by this manual. Operating and Maintenance Manual – Air Conditioning Division Table 17 - Suggested brands and types of grease Supplier Type Base Temperature range (min - max) FINA Marson HTL 3 Lithium -30°...
  • Page 40 Make sure that the fan is always accompanied by this manual. Operating and Maintenance Manual – Air Conditioning Division Table 20 - Clearance between inlet-cone and shroud in Atex execution In Atex execution the inlet-cone is completely manufactured in copper or is provided with a copper tip at the end, fully overlapping the shroud. Besides this, the clearance between inlet-cone and shroud (indicated here in the sketch) is not as in the standard execution to comply with the Atex standard requirements, but it must be as in the following table.
  • Page 41 Make sure that the fan is always accompanied by this manual. Operating and Maintenance Manual – Air Conditioning Division 6_MAINTENANCE........................20 SUMMARY 6.1 Safety information......................20 1_FOREWORD ..........................1 6.2 Casing and impeller ......................20 2_TECHNICAL DESCRIPTION ...................... 1 6.3 Accessories ........................20 2.1 Fan description ........................
  • Page 42 Comefri reserves the right to modify and update this document without any obligation for prior notice. For further information and clarifications concerning the above contents, contact Comefri S.p.A., Air Conditioning Fans Division, Magnano in Riviera (UD).