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IOM / TELECOOL THN - 0104 - E Page 1

CONTENTS

GENERAL DESCRIPTION

BASIC COOLANT CIRCUIT ....................................................................................... 3

INSTALLATION WARNINGS ...................................................................................... 4

INSPECTION

TRANSPORT .............................................................................................................. 5

UNPACKING ............................................................................................................... 5

POSITIONING ............................................................................................................ 5

INSTALLATION

ELECTRICAL CONNECTIONS ................................................................................ 10

STARTING UP

PRELIMINARY CHECKS ........................................................................................... 11

STARTING UP INSTRUCTIONS .............................................................................. 12

SETTING OPERATING PARAMETERS

GENERALITIES ........................................................................................................ 15

MAXIMUM PRESSURE SWITCH ............................................................................ 16

MINIMUM PRESSURE SWITCH .............................................................................. 16

ROUTINE MAINTENANCE AND CHECKS

WARNINGS .............................................................................................................. 17

GENERALITIES ........................................................................................................ 18

REPAIRING THE COOLING CIRCUIT ..................................................................... 20

TIGHTNESS TEST ................................................................................................... 21

HARD VACUUM AND DRYING OF COOLING CIRCUIT ......................................... 21

CHARGING WITH R407C REFRIGERANT ............................................................. 22

ENVIRONMENTAL PROTECTION ........................................................................... 22

TROUBLESHOOTING

TECHNICAL DATA

CONTENTS

Содержание TELECOOL THN 073

Страница 1: ...INSTALLATION AND OPERATING MAINTENANCE MANUAL TELECOOL THN English January 2004...

Страница 2: ...RELIMINARY CHECKS 11 STARTING UP INSTRUCTIONS 12 SETTING OPERATING PARAMETERS 15 GENERALITIES 15 MAXIMUM PRESSURE SWITCH 16 MINIMUM PRESSURE SWITCH 16 ROUTINE MAINTENANCE AND CHECKS 17 WARNINGS 17 GEN...

Страница 3: ...ignals powered by an insulating transformer situated on the electric control board NOTE the mechanical safety devices such as the high pressure switch are of the kind that trigger directly their effic...

Страница 4: ...104 E Page 3 GENERAL DESCRIPTION BASIC COOLING CIRCUIT ENGLISH 1 COMPRESSOR 2 CONDENSER 3 THERMOSTATIC 4 EVAPORATOR 5 FILTER DRYER 6 SIGHT GLASS 7 LOW PRESSURE SWITCH 8 HIGH PRESSURE SWITCH 9 CONDENSI...

Страница 5: ...al components may cause hazardous situations during installation and maintenance work All work on the unit must be carried out by qualified personnel only trained to do their job in accordance with cu...

Страница 6: ...aterials are order to minimise their environmental impact POSITIONING Bear in mind the following aspects when choosing the best site for installing the unit and the relative connections positioning an...

Страница 7: ...Page 6 IOM TELECOOL THN 0104 E THN U045 073 150 170 INSPECTION THN U090 120 rear view...

Страница 8: ...and intake flanges correctly into place carefully seal the entire perimeter of the unit on the interior wall of the shelter and the air intake and outlet flanges on the inside INSTALLATION In order to...

Страница 9: ...thermal equilibrium the pressure in the tank corresponds to the T of the surrounding environment a withdrawal of refrigerant charge will cause pressure drops which will be associated with withdrawal...

Страница 10: ...and then the steps must be repeated as described this operation facilitates the removal of trapped and or frozen humidity during the evacuation process 4 Evacuating a circuit contaminated with refrig...

Страница 11: ...t check the compatibility between the crankcase capacity and the required charge volumes ELECTRICAL CONNECTIONS GENERALITIES Before carrying out any job on electrical parts make sure the power supply...

Страница 12: ...ating elements where present The heating elements must be turned on at least 12 hours before the unit is started They are automatically activated when the main switch is put on Their function is to ra...

Страница 13: ...have to turn in one only direction The phase sequence relay is connected in series with the air flow switch so that if wrong R S T occurs an FL alarm on mP will appear In this case disconnect the powe...

Страница 14: ...s to be taken out of service for a prolonged period e g at the end of the season To turn off the unit temporarily follow the directions provided in the section 4 5 CHECKS DURING OPERATION Check the ph...

Страница 15: ...d with the initials D P Dew Point The degree of overheating is given by the difference between the temperatures thus determined Make sure that the Sub cooling of the cooling fluid is limited to betwee...

Страница 16: ...LY incorrect settings may cause serious damage to the unit and injuries to persons The operating parameters and control system settings configurable by means of the microprocessor control are password...

Страница 17: ...ter fail to trip in the event of a pressure increase the pressure relief valve will open The high pressure switch must be manually reset this is possible only when the pressure falls below the set dif...

Страница 18: ...ALWAYS BE PERFORMED BY QUALIFIED PERSONNEL ONLY Before carrying out any work on the unit or accessing internal parts make sure you have disconnected it from the mains electricity supply The upper part...

Страница 19: ...aned and replaced whenever they show signs of deterioration Check the refrigerant level by means of the liquid level indicator Check the efficiency of the differential air pressure switch and dirty fi...

Страница 20: ...Page 19 ROUTINE MAINTENANCE AND CHECKS INSPECTING THE DAMPER SERVOMOTOR Remove the panel above the condenser fan Remove the damper fastening screws see fig below Pull out the entire damper section to...

Страница 21: ...exposed to air ester oils tend to absorb large amounts of humidity which results in the formation of weak acids If the cooling circuit has undergone any repairs the following operations must be carri...

Страница 22: ...h degree of vacuum i e 150 Pa of absolute pressure with a capacity of approximately 10 m3 h If such a pump is available one evacuation will normally suffice to achieve an absolute pressure of 150 Pa I...

Страница 23: ...ntages of the three constituents Introduce refrigerant through the inlet in the liquid line A unit that was originally charged with R407C in the factory must not be charged with R22 or other refrigera...

Страница 24: ...in the wrong direction Insufficient flow of air to the condenser Presence of air in the refrigerant circuit as revealed by the presence of bubbles in the flow indicator also with undercooling values...

Страница 25: ...e actions Drain the circuit Check the temperatures upstream and downstream from the valve and filter and replace them if necessary Check the efficiency of the condensation control device optional Warm...

Страница 26: ...R407C 5600 230 1 50 400 3 50 400 3 50 230 1 50 230 1 50 48 VDC 400 3 50 48 VDC 2330 14 3 16 47 108 100 1450 1320 15 5 EU3 69 58 Scroll 1 1 1 0 30 0 33 2250 1 800 1850 550 128 THN 073 R407C 7100 230 1...

Страница 27: ...33 2471 800 fax 31 33 2459 220 e mail info lennoxbenelux com LENNOX POLSKA Sp zo o tel 48 22 832 26 61 fax 48 22 832 26 62 e mail info lennoxpolska pl LENNOX PORTUGALLda tel 351 22 998 33 70 fax 351 2...

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