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EQKA Cooling unit

Contents

Page

Safety Directions

2

Technical Data

2

Electric Connections

3

Installation and Commissioning

4

Operation and Care

5

Use

6

Maintenance

7

Troubleshooting

8

Refrigeration Flow Chart

9

Docking

10

EQKA Cooling unit

Fläkt Woods

8643 GB 2012.11

1

We reserve the right to alter specifications

Installation and Maintenance Instructions

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2
3
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Содержание EQKA

Страница 1: ... Connections 3 Installation and Commissioning 4 Operation and Care 5 Use 6 Maintenance 7 Troubleshooting 8 Refrigeration Flow Chart 9 Docking 10 EQKA Cooling unit Fläkt Woods 8643 GB 2012 11 1 We reserve the right to alter specifications Installation and Maintenance Instructions ...

Страница 2: ...ied out by a professional Service maintenance of the cooling system must only be carried out by an accredited company and qualified personnel wearing required protective equipment gloves and protective eye glasses Automatic start Open and lock the main switch of the cooling unit before beginning any work on the unit Do NOT stand on the cooling unit Use only genuine spare parts for maintenance Negl...

Страница 3: ... air handling unit or another unit acrossamonitoringunit This alarm group can be obtained as potential free contacts at pins 57 and 58 on wiring terminals To prevent unnecessary stops and alarm from the cooling unit it should be interlocked across the extract air fan FF Connect the cooling unit as illustrated in the wiring diagram below Incoming 3x400V supply To be connected to main switch in cool...

Страница 4: ...pre heated Settheprotectivemotorswitchofthe compressors to position 0 Off Set the main switch insi de the cooling unit to position 1 On and activate the control circuit fuse The crank case heater now heats up the compressor If the ambient temperature is below 15 C wait for 4 8 hours until the compressor has become warm before you start up the compressors To set the setpoint for cooling When coolin...

Страница 5: ...t fuse Protective motor switch Control unit with display Refrigerant tank Component description Control unit RC1 The control unit is located in the door of the cubicle See the description on page 9 Control circuit fuse To reset the miniature circuit breaker pull the black actuator button upward Main switch Use the main switch for switching the cooling unit on off Always switch off the main switch ...

Страница 6: ...ls Cooling unit with hot gas bypass On a 20 control signal the ICM2 with hot gas valve starts in the fully open position The hot gas valve closes linearly between 2 and 8 V The KMI starts at 8 V and the valve opens 40 Between 8 and 10 V the valve closes again Stepping levels Stepping out of each step occurs 20 2 0V during stepping level for 2 or 3 compressors and 10 1 0v During the stepping level ...

Страница 7: ...as 4 Safety equipment tripping function on the pressure switches 5 Cooling capacity 6 Control feedback control equipment Performance check 7 Electric equipment retightening of power supply connections 8 Cleaning Coils drip tray drainage 9 Air filter Recurring checks Mustonlybecarriedoutbyarefrigerationservicecompany Inspect the system at least once every 12 months and main tainajournal Checkthefol...

Страница 8: ...et it or let the com pressor motor cool off Check after resetting the motor protection that the compressor operates without abnormal noise High pressure switch with automatic reset has tripped and compressor 1 is switched off for 5 min Check that filter and coils are not clogged Check that the control signal is at least 30 for start of first com pressor To start all the compressors the signal shou...

Страница 9: ...high pressure GP1a 1 In service pressure switch high pressure GP2 1 GP2 2 GP2 3 Protective pressure switch low pressure KD 1 KD 2 KD 3 Condenser KD W Water cooled condenser optional KM 1 KM 2 KM 3 Compressor MU1 1 MU1 2 MU1 3 Measurement tapping high pressure MU2 1 MU2 2 MU2 3 Measurement tapping low pressure SG 1 SG 2 SG 3 Sight glass SÄV Safety valve VS 1 VS 2 VS 3 Expansion valve VW Pressure co...

Страница 10: ...Fläkt Woods 8643 GB 2012 11 10 We reserve the right to alter specifications Installation and Maintenance Instructions EQKA Cooling unit Jointing Externally Jointing Internally A C B D A B D C ...

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