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Liebert CBH 017 Service Manual

High performance air cooled chiller
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S
[017-032]
HIGH PERFORMANCE AIR COOLED CHILLER
SERVICE MANUAL
English
Cod. 272902
Rev. 25.05.2005
Issued by T.D.Service

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  Summary of Contents for Liebert CBH 017

  • Page 1 [017-032] HIGH PERFORMANCE AIR COOLED CHILLER SERVICE MANUAL English Cod. 272902 Rev. 25.05.2005 Issued by T.D.Service...
  • Page 3: Table Of Contents

    Caution It is recommended that: the manual is retained for the entire service life of the machine; the user reads the manual carefully before carrying out any operations on the machine; the machine is used exclusively for the purpose for which it is intended; incorrect use of the machine shall release the manufacturer from any liability.
  • Page 4: Introduction

    (Either Triac or EC fan); Maximum outdoor air temperature is in relation to each mod- Liebert Hiross accepts no present or future responsibility for el, as indicated in Tab. 7. In any case outdoor temperatures damage to persons, things or to the machine itself due to opera- aver 45ûC are not admitted;...
  • Page 5: Sound Pressure Levels

    2.2 --- Sound pressure levels 7) Place a mesh filter at the inlets of the pump and water chiller (Can be supplied as an optional accessory ---Not fitted); The Tab. 4 shows the noise data for the units in standard config- 8) Install, at the highest points in the circuit, apparatus which uration (without pumps), operating continuously and measured allows the bleeding of air and possibly the filling of glycol;...
  • Page 6: Connection Of The Safety Valve Discharge

    Tab. a -- Ethylene glycol to be added to water ALWAYS CHARGE THE HYDRAULIC CIRCUIT WITH THE RE- (% in weight of total mixture) QUIRED GLYCOL % NECESSARY FOR THE MINIMUM AMBI- ENT TEMPERATURE AT THE INSTALLATION SITE. FAILING Ethylene glycol TO COMPLY WITH THIS INSTRUCTION SHALL INVALIDATE (% in weight) THE UNIT WARRANTY.
  • Page 7: Electrical Connections

    Fig. c -- Sizing of the expansion vessel The total volume of the expansion vessel is calculated with the following formula: C x e 1 - - where: C=quantity of water inside the system expressed in litres e=water expansion coefficient, with water at 10ûC as a reference Pi=absolute pressure of initial charging, equivalent to the vessel pre ---charge pressure (typical value 2.5 bara) Pf=absolute final tolerated pressure, lower than the operating pressure of the safety valve calibration...
  • Page 8: First Start

    5 --- Refrigerant and Oil Charge 4.2 --- First start ---up (or after a long stop) All work on pipes or components of the refrigerating circuit un- Operate as follows: der pressure must be exclusively carried out by qualified staff, 1) At least 8 hours before the start ---up, power the crank- competent in such works.
  • Page 9: Safety Devices Settings

    TOP---UPS OF UP TO 20---30% OF THE TOTAL AMOUNT OF 3) Connect to the fittings on the compressor body (Schraeder OIL CONTAINED IN THE COMPRESSOR CRANKCASE ARE valves) and empty it of refrigerant until atmospheric pres- PERMITTED; FOR LARGER PERCENTAGES CONTACT THE sure (1 bar) is reached.
  • Page 10: Maintenance

    7 --- Maintenance 7.1 --- Spare parts The use of original spare parts is recommended. When placing an order refer to the ”Component List” enclosed The Maintenance Programme below must be carried out by a with the machine and quote the unit model no. and serial no. qualified technician, preferably working under a maintenance contract.
  • Page 11: Water Chiller With Total Heat Recovery (100%)

    8.5 --- Water chiller with inertia tank the system is stopped. It is recommended that a safety valve be installed in the hydraulic circuit to avoid hazards due to overpres- The machine can be supplied complete with a buffer tank; it per- sures, if there is no water flow through the recuperator.
  • Page 12: Tables

    Tab. 1 --- Internal hydraulic volume Model Unit volume Model Unit volume 017 --- 020 017 --- 020 023 --- 025 023 --- 025 030 --- 032 030 --- 032 017 --- 020 017 --- 020 023 --- 025 023 --- 025 030 --- 032 030 --- 032 017 --- 020...
  • Page 13 Tab. 5 --- R 407C refrigerant and oil charge Models: CBH Refrigerant charge (each circuit) [kg] 19.5 20.1 28.6 28.7 34.5 42.0 42.1 Oil charge (each circuit) [lt] 12.4 14.2 16.0 16.0 16.0 16.0 16.0 Models: CLH Refrigerant charge (each circuit) [kg] 22.5 23.1...
  • Page 14 Tab. 6 --- Electrical characteristics CBH -- R 407C Size Power supply 400 V / 3 Ph / 50 Hz Compressors power input 54.5 63.6 74.2 85.7 92.5 101.0 116.0 Compressors nominal current Compressor max. current Fan power input Fan nominal current Fan max.
  • Page 15 SBH -- R 407C Size Power supply 400 V / 3 Ph / 50 Hz Compressors power input 57.1 66.3 78.5 90.2 103.8 111.5 128.6 Compressors nominal current Compressor max. current Fan power input Fan nominal current Fan max. current Std.
  • Page 16 Tab. 7 --- Operating limits CBH -- R 407C Size Working Range Max. outdoor air temperature 45.0 41.5 45.0 43.0 44.0 45.0 43.5 ûC Safety Device Settings High pressure switch 26.0 Barg High pressure safety valve 29.0 Barg Low pressure switch Barg With nominal air flow;...
  • Page 17 Tab. 8 --- Pump set characteristics (opt.) 2 pole pump set, standard head pressure (data refers to each pump) Models Water flow 26.88 29.22 36.76 39.56 44.86 55.16 57.02 Available head pressure Water flow 26.92 29.32 36.81 39.69 45.48 51.35 55.83 Available head pressure Water flow...
  • Page 18: Drawings

    Fig. 1 --- Service areas (top view) Ordinary maintenance area Extraordinary 1000 1000 maintenance area Notes: Minimum distance between 2 units from condensing coil side = 3 m Do not obstruct the air exiting the fans for a minimum distance of 2.5 m...
  • Page 19 Fig. 2 --- Lifting instructions with tubes PROTECTION PLANK RIGID STRUTS (POSSIBILY STEEL) BELT OR CHORD BLOCKING PEG (NOT SUPPLIED) SPLIT PIN (NOT SUPPLIED) LIFTING TUBE (NOT SUPPLIED) (BASE HOLES Ø56) N.B: Place the lifting tubes in the holes in the base indicated by the words “LIFT HERE”. Lock the ends of the tubes in position with the locking pins and split pins as shown above.
  • Page 20 Fig. 3 --- Support positions and loads 1000 ”A” TANK MOUNTED (OPTION) FOOT PRINT d=20 ”B” 1500 ”B” Dimensions Tank Dimensions (mm) “A” “B” (supply not mounted on unit) Model Size 1000 CBH ---SBH 017 --- 020 3750 1000 CLH ---SLH 017 --- 020 CBH ---SBH 023 --- 025 --- 028...
  • Page 21 Weight Distribution with tank Weight Distribution (kg) Model Size...
  • Page 22 Fig. 4 --- Rubber anti---vibration support + 1000 liters tank Rubber support dimensions Rubber support installation Unit base Fixing screw Screw anchor (not supplied) Cement base Access hole for support fixing Single support code Code (mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm)
  • Page 26: Circuits

    Fig. 8 --- Refrigerant circuit (std.) with partial recovery (opt.) CBH/CLH / SBH/SLH 017---020---023---025---028---030---032 CQH/SQH 017---020---023---025---028---030 HEAT RECOVERY WATER OUTLET 2” GAS MALE (OPT.) HEAT RECOVERY WATER INLET CHILLED WATER INLET 2” GAS MALE (OPT.) 3” VICTAULIC COUPLING CHILLED WATER OUTLET 3”...
  • Page 27 Fig. 9 --- Refrigerant circuit with total recovery (opt.) CBH / CLH 017---020---023---025---028---030---032 CQH 017---020---023---025---028---030 NOT PRESENT FOR: NOT PRESENT FOR: CBH 017--- 020 CBH 017--- 020 HEAT RECOVERY WATER INLET VICTAULIC COUPLING (OPT.) DN 80 --- 3” --- 88.9 mm...
  • Page 31 Produsent erklærer herved at dette produktet er i samsvar med EU-direktiver: Fabrikant erklærer herved, at dette produkt opfylder kravene i EU direktiverne: Since the Liebert HIROSS Company has a policy of continuous Ο ΚατασÀευαστÞj δηλþνει üτι το παÃüν πÃοΪüν εßναι ÀατασÀευασmÝνο αýmφωνα mε τιj οδηγßεj τηj Ε.Ε.: product improvement, it reserves the right to change design and specifications without previous notice.
  • Page 32 Tel. +39 049 9719111 Telefax +39 049 5841257 Internet : www.liebert-hiross.com Liebert HIROSS Since the Liebert HIROSS Company has a policy of continuous is a division of product improvement, it reserves the right to change design and EMERSON specifications without previous notice.