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DryGair DG-X, Installation, Operation And Maintenance Manual

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DryGair DG-X Installation, Operation And Maintenance Manual Download Page 47

 

DryGair Dehumidification Unit Model DG-X 

 

Troubleshooting and Repairing the Unit 

 

 

Ver. 12/2020 

 

41 

8. 

TROUBLESHOOTING AND REPAIRING THE 
UNIT 

8.1 

Troubleshooting 

The troubleshooting section provides malfunction symptoms, the possible 
cause, and what may be done to overcome. 

Symptom 

Possible Cause 

Remedy 

Unit is not operating 

No power to the unit 

Check the power from the power 
supply panel 

Overload tripped 

Reset the overloads 

Little or no airflow 

The fan motor is burnt 

Replace the fan 

Refrigeration coils are dirty 

See section 7

—Maintaining the unit 

Loose electrical wiring 
connections 

Check the wiring diagram to find 
the fault and repair 

Circuit breaker tripped 

Reset the circuit breaker 

Little or no water extraction 

Insufficient airflow 

Check and perform the suggestions 
for the above "Little or no airflow" 
symptom 

Compressor fault 

Contact the factory service center 

Loss of refrigerant 

Contact the factory service center 

Unit vibrates excessively 

Loose compressor 

Tighten the nuts of the compressor 
mounts 

Damaged fan 

Replace the fan 

The compressor is not secured 

Tighten the compressor's bolts 

Water flooding inside the 
machine 

Drain-pipe is blocked/frozen 

Clear the obstruction 

Drain-pipe is too high 

Ensure that no section of the drain 
hose is above the level of the water 
outlet 

Crimped or blocked tubing 

Straighten, clear, or replace the 
tubing 

The compressor is not 
working while the fan is 
working 

High-pressure switch fault 

Press the HP switch button 

Circuit breaker tripped 

Toggle circuit breaker (E3) 

Compressor overload tripped 

Reset the overload (ST3) 

Fan is not rotating 

Circuit breaker tripped 

Press circuit breaker (E1) 

Compressor overload tripped 

Reset the overload (ST1) 

 

Summary of Contents for DG-X

Page 1: ...December 2020 Ver 12 2020 DryGair Dehumidification Unit Model DG X 360 Air Circulation Installation Operation and Maintenance Manual ...

Page 2: ...0989 drygair energies Proprietary and Confidential Copyright 2020 by DryGair Energies Ltd All rights reserved No part of this manual may be reproduced or copied in any form by any means graphic electronic or mechanical including photocopying typing or information retrieval systems without written permission of DryGair Energies Ltd ...

Page 3: ...12 2020 iii TABLE OF CONTENTS 1 Introduction _________________________________________ 1 2 Safety ______________________________________________ 3 3 Unit Overview ________________________________________ 5 4 Installation __________________________________________ 8 ...

Page 4: ...Contents DryGair Energies Ltd iv 5 Unit Parts and Components ___________________________ 20 6 Unit Operation ______________________________________ 26 7 Maintaining the Unit__________________________________ 34 ...

Page 5: ... Unit Model DG X Table of Contents Ver 12 2020 v 8 Troubleshooting and Repairing the Unit _________________ 41 9 Appendices_________________________________________ 43 10 Comments and Notes ________________________________ 46 ...

Page 6: ...__ 20 Figure 5 2 Electrical door from inside ________________________________________ 21 Figure 5 3 Remote control__________________________________________________ 21 Figure 5 4 Electrical compartment ___________________________________________ 22 Figure 5 5 HVAC compartment______________________________________________ 23 Figure 5 6 Compressor ____________________________________________________...

Page 7: ...idification unit read this manual The DryGair dehumidification Operation and Maintenance Manual provides information and procedures for installing and operating the unit as well as maintenance troubleshooting and repair procedures When reading pay special attention to The safety instructions The conventions They explain the symbols used in this manual Before beginning a procedure read the procedur...

Page 8: ...essage warns of a possible hazard to personnel and extreme hazard to the unit Caution Information given in a caution message refers to the safe operation of the unit and provides a warning where the possibility for damage to the equipment exists Note Information given in a note describes how the part unit functions or provides a tip on how best to use it ...

Page 9: ...turned off and disconnected before beginning maintenance procedures part replacements or repairs We advise strict observance of the work safety standard as defined by the authorities in each country DryGair cannot accept responsibility for injury to persons or damage to objects resulting from not observing safety standards 2 1 Hazards Danger Electrical Shock Hazard High voltage is present at point...

Page 10: ...ated and what to do in case of an electrical emergency Locate approved types of fire extinguishers near the equipment 2 3 Maintenance Safety Notes Only authorized personnel are permitted to perform maintenance and repair tasks Before performing such a task read the instructions to ensure you understand them and that the required precautions and tools are available For high mounted maintenance proc...

Page 11: ...system may require adding minerals 3 1 Standard Features The DG X unit includes the following features Humidity Set Point ensures the humidity in the room is kept at this set point Air circulation moves the air inside the growing space 3 2 Available Options The DryGair unit can include one or more of the following options with special order They are not included with the standard unit Chemical Pro...

Page 12: ...l parts of the DryGair unit Air inlet to coils both sides Door to the Dehumidification Compartment Door to the electrical compartment Control panel Temperature Controller Humidity Controller with remote control Mode selector switch Adjustable air distributor hood Fan Figure 3 1 DryGair unit front and side view 1 2 3 5 4 6 ...

Page 13: ... at 26 C 80 F and 60 RH Serial No The serial number of the specific unit Refrigerant The type of refrigerant used in the unit Quantity The amount of refrigerant to fill in the unit Total weight The overall weight of the unit I oper max The maximum operating current Input watt The power required by the unit at 26 C 80 F and 60 RH Electricity The electricity requirements for operating the unit The f...

Page 14: ... If the unit is placed next to a wall it should be noted that only the rear side of the unit without the coils can be placed along the wall Ensure the unit is distanced at least 50 cm 2 ft from the wall and blowing air towards the plants Leave the rear panel of the distribution module connected and remove the other panels according to the location of the plants The unit is shipped with two L shape...

Page 15: ...age for removing the water that is condensed by the unit The unit is supplied with a short 1 5 m 5 feet tube connected to a 1 2 BSP threaded plastic bushing Warning The unit condensation water is not for drinking If the unit is to be connected to a concrete ceiling the site should be equipped with suitable climbing equipment to enable safe and comfortable access to the unit The transit lanes insid...

Page 16: ...ned for this type of maneuvering should perform all the handling and lifting operations When transferring the unit be sure to have a supervising person Personnel must keep a distance from suspended loads and work areas of the crane forklift truck or other lifting handling equipment Moving and lifting the unit should be done with suitable belts chains Always act with extreme caution to prevent pers...

Page 17: ...ld be placed between the forklift addons which protect delicate parts of the unit It is strongly recommended to secure and fix the unit to the load bearing when lifting and transporting the unit This will ensure no movement swinging or damage to the unit or its surroundings Notes For model weight and dimensions see details in Appendix A Forklift addons ...

Page 18: ...y closed 2 Secure the compressor With a belt to a firm part of the unit structure to avoid overweight on the compressor s screws Or Place a piece of wood in the gap between the compressor and the unit side post to support the compressor s high end 3 Verify the panels of the unit top fans are mounted well 4 Protect the coils with polystyrene or plywood Caution If the unit is tilted during its trans...

Page 19: ...agile Do not break do not open the packing with sharp tools and do not perforate the cover Before proceeding with the installation procedure examine the shipping documents and packing crate labels against the purchase order In case of discrepancy contact your local DryGair representative 4 2 4 Initial Inspection Upon receipt inspect the exterior of the packaged unit for any damage that might have ...

Page 20: ...ts List Received The DryGair DG X unit is supplied with the following standard items and parts Table 4 1 Parts and Accessories Part Description Quantity Main Unit 1 Accessories N A Adjustable legs shock absorbing and leveling 4 Rails for hanging the unit from the ceiling 2 Side hood panels 4 Drain tube 1 5 m 5 feet 1 Remote control see Figure 5 3 for reference 1 Note Verify all parts and ordered i...

Page 21: ...the screws connecting the two rails to the corners of the unit Figure 4 3 Rails as shipped 2 Lift the unit with a forklift and remove the three forklift addons see Figure 4 1 for reference and the four leveling legs of the unit Note When connecting the rails pay attention to the difference between the right and left rails allowing the removal of the drain pan 3 Place the rails along the bottom sid...

Page 22: ... panels from the air distribution module hood according to the selected location of the DG X in the room 4 5 1 Ultimate 360 Hood The Ultimate 360 Hood distributes the air coming from the unit to four directions This configuration is efficient when the DryGair DG X unit is placed in the center of the room away from any walls 4 5 2 Side Hood The Side Hood distributes the air to one or more specific ...

Page 23: ...sported to its location in the room using a manual or driven forklift fitted to its weight Figure 4 6 Lifting the unit Place the unit at the selected location according to the location considerations in section 4 1 1 above 4 6 1 Positioning the Unit on a Floor 1 Place the unit at the selected location 2 Level the unit and verify it is stable ...

Page 24: ...o the following Verify the ceiling and the connecting rods can hold such a weight Contact your local DryGair representative or DryGair info drygair com to consult on how to hang the unit 1 Connect four threaded rods to the corners of the two L shaped side rails 2 Hang the unit from the ceiling as shown in the following Figure 4 7 Figure 4 7 Unit hanging from a ceiling 3 Level the unit and verify i...

Page 25: ...ulation the water drain pipe should be connected by a plumber to a drainage line leading outside the room or to any other place the water should be collected such as a container Make sure the unit is leveled 1 Connect the prepared drain pipe to the main drain outlet as depicted in the following Figure 4 8 Drain tube supplied with 1 5m 5feet Drain outlet 1 2 BSP Figure 4 8 Water drain outlet 2 Rout...

Page 26: ...rformed through the components on the electrical door and the remote control Temperature Controller Humidity Controller with remote control Mode Selector switch Figure 5 1 Electric door user interface The Temperature controller displays the air temperature It should not be touched The Humidity controller displays the air humidity level and can be set with the remote control see Figure 5 3 The mode...

Page 27: ...itch Figure 5 2 Electrical door from inside 5 1 2 Remote Control The remote control features the four buttons as on the controller itself Prg mute Set and the up down arrows which access almost all the functions provided by the instrument keypad Figure 5 3 Remote control Pressing the remote control On Off button can start and stop the DG X unit operation 2 3 1 ...

Page 28: ...personnel or a certified electrician Climate Control Relays a Start Stop R1 b Drying R2 Busbars a Phase 1 L1 b Phase 2 Neutral L2 Climate Control Terminal Block Circuit breakers a Fan E1 b Compressor E3 c Command EP d Humidity controller EP4 Contactors a Fan ST1 b Compressor ST3 Transformer AC DC 12V 1SK Main power switch Timer delay for the compressor TD1 Capacitor 70 µF Main Terminal Block Figur...

Page 29: ...compartment is located behind the unit s left side door Figure 5 5 HVAC compartment 5 2 1 Compressor The compressor is located at the lower left side of the dehumidification compartment Figure 5 6 Compressor The compressor is mounted to the floor with four bolts and vibration eliminators which are supplied by the compressor manufacturer ...

Page 30: ... sight glass has a center indicator Its color provides an indication of the moister in the refrigerant circuit Blue dry OK Purple caution OK pay attention Yellow wet Fault The continuous presence of bubbles might indicate loss of refrigerant 5 3 Humidity Sensor The Humidity sensor is connected at the left air entrance to the unit Humidity sensor Figure 5 8 Humidity sensor The sensor unit is connec...

Page 31: ...nts Ver 12 2020 25 5 4 Circulation Fan The DG X has an axial blowing fan on the top of the unit under the hood Circulation fan Figure 5 9 Axial circulation fan The fan circulates the air that passes through the dehumidification unit and blows it out into the room 1 ...

Page 32: ...What is behind each cover and risks related to that area The electrical compartment high voltage and low voltage areas Operating the unit and stopping the unit The climate control system if applicable Caution According to the kind of work being performed on the unit wear personal protection devices such as helmet eye protection glasses protection shoes ears noise protection etc All according to st...

Page 33: ...air Energies Ltd Caution Before powering the unit on visually check that all doors and covers of the unit are closed and that the unit inside and surroundings are clean from any parts tools etc 6 2 1 Preliminary Checks 1 Make sure the main switch is OFF and that unauthorized persons are not near the machine 2 Confirm the DryGair unit is stable and leveled 3 Confirm the air distribution module hood...

Page 34: ...r details on the operation modes Note If the operating mode is set to Local the fan will start operating when the unit is powered on 4 Toggle the external circuit breaker of the main power supply to its ON position Warning High voltage is present at points throughout the unit Contact can result in injury or death Before opening the unit electrical compartment ensure you are familiar with the locat...

Page 35: ...020 29 6 Rotate the main switch to its ON position Powering OFF is performed when the unit is not in use or before performing maintenance and service procedures To power OFF press the off button on the remote controller OR rotate the main switch to its OFF position ...

Page 36: ...he controller or through the remote control Set button Note The factory default value is around 75 RH To set the required Humidity percentage Press the Set button once The screen displays ST 1 When the Set button is released the default humidity set point will flash on the display screen Figure 6 1 Humidity controller and remote control 2 Set the required humidity percentage value using the Up Dow...

Page 37: ...oller as described in section 6 2 3 above and managed through the unit s control panel or through the remote control Remote mode 2 the unit is operated and controlled through a climate control system which includes a software application and 24 VAC that activate relays in the unit s switchboard See Appendix B for details on how to connect the DryGair unit to a climate control system and how to con...

Page 38: ...etails in Appendix B Warning Before turning on the unit make sure the inside of the unit is clear from any objects and that there are no unauthorized people around the machine 3 Press the On Off button on the remote control Note If the operating mode is set to Local the fan will start operating when the unit is powered on 4 Check the following The fan starts operating immediately blowing air out o...

Page 39: ...switch is set to Local 1 the humidity setpoint is dictated by the unit s humidity controller When the mode selection switch is set to Remote 2 the local humidity controller becomes inactive and the operation of the unit is controlled by the humidity sensor and commands from the connected climate control system see details in Appendix B The controller will continue displaying the humidity of the un...

Page 40: ...t Caution Avoid direct water contact with the unit sensors Do not immerse them in water and or spray water directly at them 7 1 Daily Maintenance Perform the following every day Visually inspect the unit verifying the unit is operating properly and noticing if there is anything unusual Clean the unit and its surroundings from any foreign material 7 2 Monthly Maintenance Warning Before performing t...

Page 41: ...commended the yearly inspection and maintenance is performed by a qualified DryGair person or representative and having a Refrigerant technician or electrician for assistance The quarterly maintenance Paint damaged or chipped body paint to preserve the unit body Check that the fan is firmly secured to the motor shaft and that the fan rotates freely The fan motor is sealed for life and therefore do...

Page 42: ...on systems can be hired to clean the DryGair Refrigeration parts If you choose to hire an external cleaning service make sure they are qualified and certified and have reviewed this cleaning protocol and the operation manual 7 5 2 Preliminary Procedures 1 Visually inspect the system verifying the system is operating properly and noticing if there is anything unusual 2 Clean the system and its surr...

Page 43: ...wing the dirt out from behind the fins with low pressure compressed air To prevent any damage to the fins it is best not to aim the air nozzles directly at the coils Alternatively gently vacuum clean the coils 2 Gently wipe the coils with a semi wet cloth 3 Further cleaning can be done by steam or by using a cleaning substance meant for cleaning air conditioning systems For example ACE Foam N Clea...

Page 44: ... the connected L shaped metal rails 2 It is easier and safer to perform this procedure with two people 3 Be aware that the pan may still have water in it 1 Disconnect the drainage pipe from the drainage pan 2 Remove the drainage pan from the bottom of the unit as depicted in the following figures Drainage pipe Drainage pan Pan locking levers 4 Figure 7 1 Removing the drainage pan 1 3 2 ...

Page 45: ...doors and covers open to ensure all internal parts are dry 7 Check the electrical compartment to ensure nothing got wet and that there is no moisture 7 5 5 Antibacterial and Antifungal Treatment It is possible to apply antibacterial and antifungal materials approved for air conditioning systems to disinfect the coils and drainage pan For Example ACE Evap Guard or ACE Evap Gard Plus Make sure to fo...

Page 46: ... corrosion of the metal parts and damage to the electrical apparatus 1 Carefully clean the unit and dry it with a clean cloth 2 Use a vacuum cleaner to clean difficult to reach areas Caution Do not use gasoline or solvents which might damage the paintwork transparent parts cable insulation etc 3 Remove oil and sludge with a clean cloth If necessary use a paintbrush dipped in oil or cleaning materi...

Page 47: ...heck and perform the suggestions for the above Little or no airflow symptom Compressor fault Contact the factory service center Loss of refrigerant Contact the factory service center Unit vibrates excessively Loose compressor Tighten the nuts of the compressor mounts Damaged fan Replace the fan The compressor is not secured Tighten the compressor s bolts Water flooding inside the machine Drain pip...

Page 48: ...llowing procedure must be used 1 Turn the unit off 2 Find the source of the leak Note For evacuating and recharging the unit use the crimped and brazed charging stub attached to the side of the refrigerant compressor 3 Evacuate the unit from the remaining refrigerant before recharging 4 Fix the leak 5 Vacuum the unit pipes using a vacuum pump 6 Recharge the unit with accurately measured by weight ...

Page 49: ...2 100 cm 1 3 39 cm side hood Weight 705 lbs 320 kg Optimal temp range 55 F 95 F 13 C 35 C Water condensation 80 F 27 C 60 RH 4 2 G h 16 L h Electricity consumption 4 8 kwh Electricity requirements 1 phase 230V 60Hz I Oper Max 35 A Air flow 4 115 CFM 7000 m3 h The unit specifications are also available online https drygair com dehumidifiers A 2 Dimensions Figure 9 1 Unit dimensions 3 2 100 cm 1 3 3...

Page 50: ...digital output from the computer Turning the unit on turns the unit s fans on Terminals 43 and 44 Remote drying command to start and stop dehumidification digital output from the computer This signal turns the dehumidification on off based on the humidity sensor data and the humidity setpoint in the climate control system Note In remote mode the unit does not use its own humidity sensor It uses th...

Page 51: ...E450 4 N A4 Humidity controller Carel IR33V9HR20 Humidity sensor Carel KFTF20UNTC10K TXV Danfoss TGEL4 5 Filter Dryer Danfoss DCL084S Sightglass Alco HMI 1 TT4 High pressure switch with reset LT HPS630495 Low pressure switch LT LPS90120 Motor protector Comp ABB S202MC32 Motor protector Fan ABB S202MC6 Contactor Comp ABB AF30 30 00 13 Contactor Fan ABB AF09 30 10 13 Timer TELE E1Z1 Relay 24V RELPOL...

Page 52: ...Comments and Notes DryGair Energies Ltd 46 10 COMMENTS AND NOTES The following pages are intentionally left blank and can be used for adding personal comments and notes related to the DryGair unit ...

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