J&E Hall JEHSD-0600-M-3 Скачать руководство пользователя страница 32 | Manualshive

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Issue: 01.05.2017

Page 32

Technical Information

SNS Pressure Switch

Safety pressure switch settings:

The pressure switch fitted to condensing units with auto reset for low pressure is factory preset to 1.0
bar cut-out.

Do not set pressure control below this setting.

Setting procedure for SNS Pressure switch:

Turning the range adjusting screw counterclockwise increases the setting pressure. Turning the range
adjusting screw clockwise decreases the setting pressure.
Turning the differential adjusting screw clockwise increases the differential. Turning the differential
adjusting screw anti-clockwise decreases the differential setting.
By turning these two adjusting screws, the desired setting pressure and differential are obtained.
Lock the spindles with the locking plate after setting.

1. Micro Switch
2. Range Adjusting Screw
3. Differential Adjusting
Screw
4. Low Pressure Scale Plate

5. Low Pressure Range Pointer
6. Differential Pointer
7. Low Pressure Bellows Cover

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Содержание JEHSD-0600-M-3

Страница 1: ...FUSION DIGITAL SCROLL Commercial Condensing Units Variable Capacity Medium Temperature Applications ISSUE 01 05 2017 TECHNICAL MANUAL COMMERCIAL CONDENSING UNITS TECHNICAL MANUAL ...

Страница 2: ...ard Product Configuration 4 Specifications 5 8 Health Safety 9 Installation 10 13 Commissioning 14 22 Control Logic 23 24 Alarm Information 25 26 Drawings 27 28 Service Maintenance 29 30 F Gas Information 31 Technical Information 32 35 Certification 36 38 ...

Страница 3: ...Issue 01 05 2017 Page 3 Nomenclature 3 Three Phase Application M Medium Temperature Nominal Capacity in Horse Power 0600 6 0 HP D Digital S Scroll JEH J E Hall International JEHSD 0600 M 3 ...

Страница 4: ...Fixed cartridge type Gomax flexible pressure hoses IP54 rated control panel Mains isolator Compressor manual motor starter with short circuit overload protection Compressor contactor Advanced programmable controller LCD display Step down transformer 240V to 24V Fuse protection on controller fan speed controller and backup system Mechanical by pass circuit AC modulation fan speed controller Alarm r...

Страница 5: ... NC a MCC b LRC c FLC Liquid Suction m h Litres Litres A A A A Litres Litres m h inch inch kgs dB A JEHSD 0600 M 3 ZBD45KQE TFD 17 1 1 89 0 6 A 9 3 13 5 74 0 1 0 9 7 6 7 6 4150 1 2 7 8 139 41 Unit Model Unit Dry Weight SPL 10m d Compressor Airflow Connections Electrical Data Fan Motors Type No Coil Volume Liquid Receiver Compressor Oil Sep Charge Oil Type Oil Type A Polyolester Oil Copeland Ultra ...

Страница 6: ...DEL HP TE TA Watts 30 25 20 15 10 5 0 5 10 27 CC 7940 9770 11900 14400 17250 27 PC 3900 4090 4250 4400 4510 27 COP 2 04 2 39 2 80 3 27 3 82 32 CC 7450 9130 11100 13300 15850 32 PC 4270 4510 4730 4940 5110 32 COP 1 74 2 02 2 35 2 69 3 10 35 CC 7155 8735 10550 12600 14950 35 PC 4530 4800 5060 5315 5520 35 COP 1 58 1 82 2 08 2 37 2 71 38 CC 6860 8340 10000 11900 38 PC 4790 5090 5390 5690 38 COP 1 43 ...

Страница 7: ...2 10 2 37 2 69 43 CC 6560 8040 9720 11700 43 PC 5020 5490 5930 6310 43 COP 1 31 1 46 1 64 1 85 MODEL HP TE TA Watts 30 25 20 15 10 5 0 5 10 27 CC 6610 8130 9820 11700 13850 16350 19250 27 PC 3540 3920 4330 4730 5130 5510 5870 27 COP 1 87 2 07 2 27 2 47 2 70 2 97 3 28 32 CC 6210 7670 9310 11100 13200 15650 18500 32 PC 3810 4230 4640 5070 5460 5830 6170 32 COP 1 63 1 81 2 01 2 19 2 42 2 68 3 00 35 C...

Страница 8: ...capacity PD 12 200 11 200 11 850 11 400 11 400 kW DD 3 720 3 230 3 590 3 470 3 470 kW COPD 3 28 3 47 3 30 3 29 3 29 P3 7 76 7 63 N A 8 04 8 04 kW D3 5 62 5 68 N A 5 49 5 49 kW COP3 1 38 1 34 N A 1 46 1 46 Rated cooling capacity Refrigerant fluid Item Value 10 Parameters at full load and ambient temperature 32 C Parameters at full load and ambient temperature 43 C Rated power input Rated COP Parame...

Страница 9: ...h Disconnect and shut off power before installation or service of the equipment Refrigerant release into the atmosphere is illegal Proper evacuation recovery handling and leak testing procedures must be observed at all times Units must be earthed and no maintenance work should be attempted prior to disconnecting the electrical supply The electrical covers and fan guards must remain fitted at all t...

Страница 10: ...r maintenance around the unit Ensure that there is no obstruction to air flow into or out of the unit Remove obstacles which block air intake or discharge The location must be well ventilated so the unit can draw in and distribute plenty of air thus lowering the condensing temperature To optimize the unit running conditions the condenser coil must be cleaned at regular intervals The unit must be l...

Страница 11: ...xceeds 20m or multiple oil traps are fitted Check the oil level closely during commissioning and add oil as necessary Add oil in small amounts Do not overfill the compressor When installing a single condensing unit with multiple evaporators connected which operate independently care should be taken to ensure that the evaporating pressure temperature does not fall outside the compressor operating l...

Страница 12: ...n Charging Once pressure testing has been completed the system can now be evacuated to remove air and any moisture from the piping This can be done as follows Ensure any nitrogen charge is safely released from the system Connect a gauge manifold to the connections on the service valves on the condensing unit Connect a vacuum pump and vacuum gauge to the system Ensure all gauge manifold and service...

Страница 13: ...unit must be via a suitable motor rated circuit breaker or fuse A mains isolator is fitted to all condensing units therefore an additional isolator is not required unless site conditions or regulations dictate differently J E Hall Fusion Digital Scroll condensing units require a 400 volt 3 phase 50Hz supply which must include a Neutral and an Earth These systems are not suitable for any other supp...

Страница 14: ...g Access to Controller and LCD Display The controller and LCD display are accessed by removing both the end service panel and front panel Important Note Warning Only Authorized personnel are allowed to access the controller and LCD display ...

Страница 15: ...re running the unit the controller settings on page 18 should be checked altered as required Running the Unit Switch unit on at controller see page 19 Run the unit and check compressor and condenser fan operation Check system pressures and temperatures gas charge and running currents of motors to ensure correct operation Check transducer sensor readings are accurate calibrated equipment required C...

Страница 16: ...ame group if the cursor is in a setting field decreases the value ENTER Used to move the cursor from the home position top left corner to the setting fields in the setting fields confirms the set value and moves to the next parameter PRG Accesses the menu for selecting the group of parameters to be displayed modified access to the parameters is confirmed by pressing the Enter button ESC Used to mo...

Страница 17: ...ntroller home screen will appear as follows The low pressure and high pressure conditions of the unit are displayed If OFF by Key is indicated in the lower box then the unit is switched OFF on the controller To switch the unit ON follow instructions on page 19 Further information on the system conditions can be displayed by pressing the DOWN arrow ...

Страница 18: ... for R404A R407A R407F R448A R449A operation 4 Press ENTER button once more to return the cursor to the home position 5 From screen B01 use the DOWN button to move to the next screen B02 6 At screen B02 the Refrigerant Type can be selected The default refrigerant is set as R404A 7 To change the refrigerant press ENTER to move the cursor from the home position to the refrigerant type 8 Use UP or DO...

Страница 19: ...button Screen A01 is displayed 3 Press ENTER button to move cursor from home position to SWITCH OFF value Switch Unit ON by using UP DOWN arrows Press ENTER button to confirm 4 Press ESC button repeatedly to return to Home Screen This should now show ON by KEY at the bottom of the screen 5 The unit will start up following a short delay assuming all conditions for compressor start up are met ...

Страница 20: ...r motors are designed to run only in one direction The correct rotation of a three phase compressor motor depends on the connection of the three incoming phases to the unit Correct rotation can be determined by a drop in suction pressure and a rise in discharge pressure when the compressor is energized Running the compressor for a short period of time in reverse direction will have no negative imp...

Страница 21: ... mode it provides compressor control It also protects the compressor against deep vacuum operation a potential cause of failure due to internal arcing and overheating The low pressure switch is factory set as below For Normal controller operation please do not adjust this setting For operation in bypass mode the low pressure control should be set to control the compressor fixed speed only for twin...

Страница 22: ...ging the position of the two manual bypass switches mounted in the cover of the controller electrical box from 0 to 1 the compressor will run at 100 capacity controlled by the adjustable LP switch see page 21 In bypass mode the condenser fan will run without fan speed control Note Please ensure the two bypass switches are always at 0 position while running in electronic controller mode ...

Страница 23: ...control request in those specific operating conditions Therefore within this zone no device is stopped or started In the decrease zone the request also decreases at a rate that depends on the deviation from the set point and vice versa in the increase zone the request increases proportionally to the deviation For the increase and decrease zones the following can be used Fixed times the request dec...

Страница 24: ... devices with the same capacity an increase time of 180 s means that one device is activated every 45 s In the situation shown in the figure the request sent by the controller decreases increases slowly as soon as the controlled value is outside of the Neutral zone while it decreases increases quickly the further the controlled value moves away from the Neutral zone in this way the response of the...

Страница 25: ... Page 25 Alarm Information Alarm Settings 1 Low pressure alarm by transducer 2 High pressure alarm by transducer 3 High condensing coil temperature alarm 4 High discharge alarm for fixed scroll compressor if applicable ...

Страница 26: ...envelope Digital scroll Auto A16 Condensing coil high temperature Auto A17 Compressor high discharge temperature alarm Auto A19 Compressor overload trip Auto A24 Low pressure alarm by transducer Auto A25 High pressure alarm by transducer Auto less than 3 times in 30 minutes Manual 3 times or more in 30 minutes A26 Low pressure alarm by pressure switch Auto A27 Compressor high pressure alarm by pre...

Страница 27: ...Issue 01 05 2017 Page 27 Drawings Dimensional drawing JEHSD 0600 M 3 ...

Страница 28: ...Issue 01 05 2017 Page 28 Drawings Electrical Wiring Diagram JEHSD 0600 M 3 ...

Страница 29: ...d Oils Polyolester Mobil EAL Arctic 22 CC 2 Condenser Fan Motor Blade Clean and inspect at regular intervals Check for abnormal noise vibration and fan imbalance Ensure that the fan motor is clean and spins freely Check that the condenser fan blade is clean and free from restriction and damage imbalance Note The Fan Motor is pre lubricated and factory sealed so no maintenance is necessary 3 Conden...

Страница 30: ...ry 6 Refrigerant Charge Check the refrigerant charge by ensuring that the system is operating correctly the pressures are as expected and that the liquid line sight glass shows a full bore of liquid refrigerant Carry out a full leak test 7 Unit decommissioning and disposal At the end of the unit s useful life a suitably qualified engineer should decommission it The refrigerant and compressor oil a...

Страница 31: ...6 35 8 358 Changes to leak testing requirements are as follows OLD LEGISLATION NEW LEGISLATION LEAK CHECKING FREQUENCY 3 30 kgs 5 50 TCO Eq Every 12 months but can be increased to 24 months if fitted with a fixed leak detection system 30 300 kgs 50 500 TCO Eq Every 6 months but can be increased to 12 months if fitted with a fixed leak detection system 300 kgs 500 TCO Eq Every 6 months however auto...

Страница 32: ...ressure Turning the range adjusting screw clockwise decreases the setting pressure Turning the differential adjusting screw clockwise increases the differential Turning the differential adjusting screw anti clockwise decreases the differential setting By turning these two adjusting screws the desired setting pressure and differential are obtained Lock the spindles with the locking plate after sett...

Страница 33: ...Issue 01 05 2017 Page 33 Technical Information Medium Version Controller Please Note The battery in the controller should be changed every three years ...

Страница 34: ...Issue 01 05 2017 Page 34 Technical Information Medium Version Controller ...

Страница 35: ...chnical Data Operating Medium R404A Design Pressure DP MPa 3 4 Design Temperature TS o C 40 130 Maximum Allowable pressure MPa 3 1 Weight kg 3 5 Marking CE Type Part No Connection ODF PED Category Volume Litres Initial Oil Charge Litres RSPW 55877 7 8 Cat I 3 1 0 6 ...

Страница 36: ...Issue 01 05 2017 Page 36 Certification ...

Страница 37: ...Issue 01 05 2017 Page 37 Certification ...

Страница 38: ...Issue 01 05 2017 Page 38 Certification ...

Страница 39: ...Issue 01 05 2017 Page 39 THIS PAGE IS LEFT BLANK INTENTIONALLY ...

Страница 40: ...J E Hall Limited Hansard Gate West Meadows Derby DE21 6JN England Tel 44 0 1332 253400 Fax 44 0 1332 371061 Email helpline jehall co uk www jehall com Issue 01 05 2017 ...

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