Liebert CRH 004 Service Manual
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Liebert CRH 004 Service Manual

Liebert CRH 004 Service Manual

High performance air cooled chiller
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R
[004-032]
HIGH PERFORMANCE AIR COOLED CHILLER
SERVICE MANUAL
English
Cod. 273044
Rev. 25.05.2005
Issued by T.D.Service

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Summary of Contents for Liebert CRH 004

  • Page 1 [004-032] HIGH PERFORMANCE AIR COOLED CHILLER SERVICE MANUAL English Cod. 273044 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

    The electrical control board is equipped with all the safety and operating devices required for reliable operation. The compres- Liebert Hiross accepts no present or future responsibility for sor motors are equipped with protection on all three phases and damage to persons, things or to the machine itself due to opera- are started by three ---pole contactors.

  • Page 5: Sound Pressure Levels

    3 --- Installation Minimum allowed glycol concentration: depending on the minimum temperature of the ambient air expected at the installation site (see Tab. a); 3.1 --- Aeraulic connections Maximum difference of air side pressure (between the one in the delivery duct and the one, possibly negative, in the The Matrix R units are arranged with connection flanges for the coil suction) equal to the max.

  • Page 6: Connection Of The Safety Valve Discharge

    11) For maximum protection ensure that all tubing exposed to To avoid stratification run the circulation pump for at least 30 low outdoor temperatures is fitted with anti ---freeze heaters minutes after adding any glycol. and insulated using closed cell synthetic rubber (elasto- After adding water to the hydraulic circuit always discon- mer);...

  • Page 7: Electrical Connections

    Fig. b -- Inertia tank sizing The total optimum hydraulic volume of the system where the Matrix R chiller is installed can be calculated by the following formula: 43 x Rt where: V=minimum required total water volume expressed in litres Rt=refrigeration capacity expressed in kW Xd=differential band set on the control and expressed in degrees centigrade Please note that the sum of the hydraulic volume of the Matrix R chiller (Vm) plus the volume of the hydraulic circuit...

  • Page 8: Start-- Up And Operation

    Note: 7) During the unit start ---up an inlet water temperature The power supply should never be disconnected, except when higher than 20ûC is allowed. Under standard operating conditions check that the limits indicated in paragraph performing maintenance. Operate (open) the main switch before carrying out any mainte- 2.1 are not exceeded.

  • Page 9: Oil Charge

    Charge with the compressor in operation, connecting the consequent operating difficulties in the hot season; a shortage cylinder with the charge connector after the thermostatic ex- of charge generates an increase in superheating and possible pansion valve. compressor stoppages. Whenever work is carried out on the Flush the connection pipe between the cylinder and the unit, ensure afterwards that the working conditions are correct, charging point;...

  • Page 10: Setting Thermostatic Expansion Valve

    6.1 --- Setting thermostatic expansion c) The superheating is the difference between the two readings (b ---a). valve 4) The superheating must be 5ûC --- 8ûC; if not, set the expan- THIS OPERATION MUST BE PERFORMED BY AN EXPERI- sion valve as follows: ENCED REFRIGERATION TECHNICIAN.

  • Page 11: Options And Accessories

    8 --- Options and Accessories 8.1 --- Pump set tected by a suitable anti ---frost heater that operates when the sy- stem is stopped. It is recommended that a safety valve be On mod. 004---016 the centrifugal pump units are direct driven, installed in the hydraulic circuit to avoid hazards due to overpres- with close ---coupled motors and a single shaft;...

  • Page 12: Water Chiller With Inertia Tank

    on board: in the latter case the flow switch, if not installed on the machine, must be installed on the hydraulic circuit by the install- er and wired to the electric panel terminal board, as indicated on the wiring diagram. 8.5 --- Water chiller with inertia tank The machine can be supplied complete with a buffer tank;...

  • Page 13: Tables

    Tab. 1 --- Internal hydraulic volume Model Unit volume Model Unit volume (*) Add the tank’s volume for the units with optional buffer tank Tab. 2 --- R 407C refrigerant and oil charge CRH 004- -016 Models Refrigerant charge (each circuit) [kg] 12.6 13.9 23.7 12.9...
  • Page 14 Tab. 3 --- CRH/SRH 004---032 --- Partial heat recovery (20%) CRH/SRH 004- -016 Model Heating capacity 10,8 14,8 18,2 21,6 29,6 36,4 44,3 Water flow 0,516 0,707 0,870 1,032 1,414 1,739 2,117 Water pressure drop Water connections 1” 1” 1” ”...
  • Page 15 Tab. 5 --- Electrical characteristics CRH 004- -016 - - R 407C Size Power supply 400 V / 3 Ph / 50 Hz Compressors power input 13.2 13.2 19.3 19.0 24.1 24.6 26.3 38.6 43.6 59.4 Compressors nominal current Compressor max. current Fans power input 10.1...
  • Page 16 SRH 004- -016 - - R 407C Size Power supply 400 V / 3 Ph / 50 Hz Compressors power input 13.4 13.4 19.8 19.4 24.8 25.0 26.7 39.6 44.5 60.8 Compressors nominal current Compressor max. current Fans power input 11.4 11.4 Fans max.
  • Page 17 Tab. 6 --- Operating limits CRH 004- -016 - - R 407C Size Working Range Max. outdoor air temperature ûC Safety Device Settings High pressure switch Barg 26.0 High pressure safety valve Barg 28.0 / 29.0 Low pressure switch Barg With nominal air flow;...
  • Page 18 Tab. 7 --- Noise levels The following table indicates the overall sound pressure level at full load conditions, measured 1m from the unit, coil side, with ducted air discharge (50 Pa static pressure), with an outdoor temperature of 35 ûC and referred to free field conditions. Total Total sound level...
  • Page 19 2 pole pump set, high head pressure (data refers to each pump) Models Water flow 26.93 29.26 35.67 38.38 44.20 50.71 55.23 Available head pressure Pump quantity Pump rotor model 65--- 260 / 2 65--- 340 / 2 Nominal motor power Noise level dB(A) Pump weight...
  • Page 20 Tab. 9 --- Fan performances and settings Standard air flow [12000 m /h], 3 Ph fan + TRIAC Models: CRH 004 --- 204 --- 008 Useful static pressure Max. fan speed signal 10.0 Fan speed 1034 1066 1097 1128 1158...
  • Page 21 Standard air flow [15000 m /h], 3 Ph fan + TRIAC Models: CRH 007 --- 207 Useful static pressure Max. fan speed signal 10.0 Fan speed 1179 1205 1232 1259 1287 1313 1339 1360 Absorbed unitary power 3140 3380 3610 3830 4040 4250...
  • Page 22 Standard air flow [14500 m /h], 3 Ph fan + TRIAC Models: CRH 032 Useful static pressure Max. fan speed signal 10.0 Fan speed 1216 1243 1272 1299 1325 1353 1357 Absorbed unitary power 3620 3850 4050 4250 4450 4660 4690 Fan discharge sound power [PWL] dB(A)

  • Page 23: Drawings

    Fig. 1 --- Service areas CRH/SRH 004---016 (top view) Ordinary maintenance area Extraordinary maintenance area 1000 1000 (*) Notes: Minimum distance between 2 units from condensing coil side = 2 m (*) 1500 mm (with 160 --- 200 Lt Tank); 2500 mm (with 400 Lt Tank) Fig.
  • Page 24 Fig. 3 --- Lifting instructions with tubes CRH/SRH 004---016 PROTECTION PLANK RIGID STRUTS (POSSIBILY STEEL) PART. “A” LIFTING SYSTEM WITH TUBES BELT OR CHORD PART. “A” BLOCKING PEG (NOT SUPPLIED) LIFTING TUBE (NOT SUPPLIED) (BASE HOLES Ø45) PART. “A” SPLIT PIN (NOT SUPPLIED) N.B: Place the lifting tubes in the holes in the base indicated by the words “LIFT HERE”.
  • Page 25 Fig. 4 --- Lifting instructions with straight shackle CRH/SRH 004---016 N.B.: LIFT IN THE BARICENTRE LINE “G” OF THE UNIT ”G” ”L” PART. “A” LIFTING SYSTEM WITH STRAIGHT SHACKLE ”G” ”Xg” STRAIGHT SHACKLE Ø 14 (UNI 1947) “A” TYPE PART. “A” (OPTIONAL) N.B: The capacity of the lifting gear must be adequate to lift the load in question.
  • Page 26 Unit baricentre position “G” --- (without water) Without tank With tank Models Models “Xg” “Yg” “Xg” “Yg” 0.83 0.58 0.89 0.58 CRH 004 0.79 0.62 CRH 204 Not available 0.80 0.56 0.86 0.56 CRH 006 0.78 0.62 CRH 206 Not available 1.22...
  • Page 27 Fig. 5 --- Lifting instructions with tubes CRH/SRH 017---032 PROTECTION PLANK RIGID STRUTS (POSSIBILY STEEL) BELTOR 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 “A”.
  • Page 28 Fig. 6 --- Support positions and loads (Note: weights refer to standard units) CRH/SRH 004 - 016 ”A” FOOT PRINT d=14 ”B” ”C” ”C” ”D” ”E” ”D” Dimensions --- CRH/SRH 004 --- 016 Dimensions (mm) Model Size 004 --- 204 --- 006 --- 206 2000 1760 004 --- 204 --- 006 --- 206...
  • Page 29 Weight distribution with tank --- CRH/SRH 004 --- 016 Weight distribution (kg) W 10 Model Size Not available Not available Not available Not available Not available Not available...

  • Page 30: Weight Distribution With Tank

    Fig. 7 --- Support positions and loads (Note: weights refer to standard units) CRH/SRH 017 - 032 1000 ”A” TANK MOUNTED FOOT PRINT (OPTION) d = 20 ”B” 1500 ”B” Dimensions --- CRH/SRH 017 --- 032 Tank Dimensions (mm) (supply not mounted on unit) Model Size 1000...
  • Page 31 Fig. 8 --- 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 38: Circuits

    Fig. 12 --- Refrigerant circuit (std.) with partial recovery (opt.) CRH/SRH 004---006---007 HEAT RECOVERY WATER OUTLET 1” GAS MALE (OPT.) HEAT RECOVERY WATER INLET 1” GAS MALE (OPT.) CHILLED WATER INLET 2” GAS MALE CHILLED WATER OUTLET 2” GAS MALE Refrigerant components Item Description...
  • Page 39 Fig. 13 --- Refrigerant circuit (std.) with partial recovery (opt.) CRH/SRH 204---206---207---008---011---014---016 HEAT RECOVERY WATER OUTLET ØG --- GAS MALE (OPT.) HEAT RECOVERY WATER INLET ØG --- GAS MALE (OPT.) CHILLED WATER INLET ØH --- GAS MALE CHILLED WATER OUTLET ØH --- GAS MALE CRH/SRH Ø...
  • Page 40 Fig. 14 --- Refrigerant circuit with total recovery (opt.) CRH 004---006---007 ONLY FOR: CRH 007 ONLY FOR: CRH 004--- 006--- 007 HEAT RECOVERY WATER OUTLET 2” GAS MALE HEAT RECOVERY WATER INLET 2” GAS MALE CHILLED WATER INLET 2” GAS MALE CHILLED WATER OUTLET 2”...
  • Page 41 Fig. 15 --- Refrigerant circuit with total recovery (opt.) CRH 204---206---207---008---011---014---016 ONLY FOR: ONLY FOR: CRH 207--- 008--- 011--- 014--- 016 CRH 207--- 008--- 011--- 014--- 016 HEAT RECOVERY WATER OUTLET ØG --- GAS MALE HEAT RECOVERY CHILLED WATER WATER INLET INLET ØG --- GAS MALE ØH --- GAS MALE...
  • Page 42 Fig. 16 --- Refrigerant circuit (std.) with partial recovery (opt.) CRH/SRH 017---020---023---025---028---030---032 HEAT RECOVERY WATER OUTLET 2” GAS MALE (OPT.) CHILLED WATER INLET HEAT RECOVERY WATER INLET VICTAULIC COUPLING 2” GAS MALE (OPT.) DN 80 --- 3” --- 88.9 mm CHILLED WATER OUTLET VICTAULIC COUPLING DN 80 --- 3”...
  • Page 43 Fig. 17 --- Refrigerant circuit with total recovery (opt.) CRH 017---020---023---025---028---030---032 NOT PRESENT FOR: NOT PRESENT FOR: CRH 017--- 020 CRH 017--- 020 HEAT RECOVERY WATER INLET VICTAULIC COUPLING (OPT.) DN 80 --- 3” --- 88.9 mm HEAT RECOVERY WATER OUTLET VICTAULIC COUPLING (OPT.) CHILLED WATER INLET DN 80 --- 3”...

  • Page 44: Not Available

    Fig. 18 --- Hydraulic circuit --- CRH 004---006---007---204---206---207 LIEBERT--- HIROSS UNIT ONLY WITH TANK VERSION NOT AVAILABLE IN 204--- 206--- 207 MODELS ONLY WITH PUMP VERSION CHILLED WATER INLET 2” GAS MALE ONLY FOR 004--- 006--- 007 MODELS CHILLED WATER OUTLET 2”...
  • Page 45 Fig. 19 --- Hydraulic circuit --- CRH 008---011---014---016 LIEBERT--- HIROSS UNIT ONLY WITH TANK VERSION ONLY WITH PUMP VERSION CHILLED WATER INLET ” GAS MALE CHILLED WATER OUTLET ” GAS MALE Hydraulic components Item Description Item Description Evaporator Control temperature sensor Evaporator antifreeze heater (Opt.)

  • Page 46: Not Available

    Fig. 20 --- Hydraulic circuit --- SRH 004---006---007---204---206---207 LIEBERT--- HIROSS UNIT ONLY WITH TANK VERSION NOT AVAILABLE IN 204--- 206--- 207 MODELS ONLY WITH PUMP VERSION CHILLED WATER INLET 2” GAS MALE ONLY FOR 004--- 006--- 007 MODELS CHILLED WATER OUTLET 2”...
  • Page 47 Fig. 21 --- Hydraulic circuit --- SRH 008---011---014---016 LIEBERT--- HIROSS UNIT ONLY WITH TANK VERSION ONLY WITH PUMP VERSION CHILLED WATER INLET ” GAS MALE CHILLED WATER OUTLET ” GAS MALE Hydraulic components Item Description Item Description Flow switch (unit without tank, Opt. without pumps) Evaporator Evaporator antifreeze heater (Opt.)
  • Page 51 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 52 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.

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