DryGair DG-X User manual
December 2020
Ver. 12/2020
DryGair Dehumidification Unit
Model DG-X
360° Air Circulation
Installation, Operation, and Maintenance
Manual
DryGair Energies Ltd .
ii
DryGair Energies Ltd. —www.drygair.com
8 Hamanofim St., Herzliya Pituach 46733
Tel.: 972-9-7730980, Fax: 972-9-7730989
: 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.
DryGair Dehumidification Unit Model DG-X
Table of Contents
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TABLE OF CONTENTS
1. Introduction _________________________________________ 1
2. Safety ______________________________________________ 3
3. Unit Overview ________________________________________ 5
4. Installation __________________________________________ 8
List of Figures
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LIST OF FIGURES
Figure 3-1. DryGair unit (front and side view) ____________________________________6
Figure 3-2. DryGair Identification label__________________________________________7
Figure 4-1. Forklift addons __________________________________________________11
Figure 4-2. DG-X carton package ____________________________________________13
Figure 4-3. Rails as shipped_________________________________________________15
Figure 4-4. Connected Rails_________________________________________________15
Figure 4-5. Air distribution Module (Hood) ______________________________________16
Figure 4-6. Lifting the unit___________________________________________________17
Figure 4-7. Unit hanging from a ceiling ________________________________________18
Figure 4-8. Water drain outlet________________________________________________19
Figure 5-1. Electric door (user interface) _______________________________________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 ____________________________________________________23
Figure 5-7. Dehumidification components ______________________________________24
Figure 5-8. Humidity sensor_________________________________________________24
Figure 5-9. Axial circulation fan ______________________________________________25
Figure 6-1. Humidity controller (and remote control) ______________________________30
Figure 7-1. Removing the drainage pan________________________________________38
Figure 9-1. Unit dimensions _________________________________________________43
Figure 9-2. Climate control relays ____________________________________________44
LIST OF TABLES
Table 4-1. Parts and Accessories ____________________________________________14
Table 9-1. Main Parts List __________________________________________________45
DryGair Dehumidification Unit Model DG-X
Introduction
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1. INTRODUCTION
This manual provides instructions for installing and operating the DryGair
unit Model DG-X correctly and safely and includes maintenance procedures
and unit troubleshooting.
Note: As DryGair continuously develops its machines to their maximum
potential, this manual, though completely up to date when issued, is subject
to changes without notice.
1.1 Before You Begin
Before you begin working with the DryGair dehumidification 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 procedure through to the end. A
thorough understanding of the entire procedure will prevent unnecessary
errors and loss of time.
1.2 Further Information
For further information, contact DryGair at:
Email: info@drygair.com
Website: www.drygair.com
Online Technical Support Webpage: https://drygair.com/technical/
Introduction
Conventions
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1.3 Conventions
The following conventions are used in this manual:
Warning
Information given in a “warning” message 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.
DryGair Dehumidification Unit Model DG-X
Safety
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2. SAFETY
DryGair Energies Ltd. believes that the safety of personnel working with and
around the unit is the most important consideration. The DryGair unit is
equipped with all the safety devices necessary to ensure risk-free use under
standard conditions.
Machine installation, maintenance, and adjustments must be performed only
by a qualified technician with expert machine knowledge and that has read
this manual.
Before operating the unit or performing maintenance operations, read and be
familiarized with the safety information.
•Obey and follow all warnings and cautions given in this manual.
•Comply with all approved and established precautions for operating
electrical and mechanical equipment.
•Only qualified and authorized personnel should perform maintenance or
repair tasks.
•Verify the power, and any other connected facilities, are 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 points throughout the
Unit. Contact with high voltage can result in injury or death. Before performing any
operation related toelectricity, open the electric compartment cover, switchoffthe
Main Power switch and switch off the CircuitBreaker. Doing so ensures no voltage
is present.
Danger: Hot Surface Hazard. The heat exchangers and their pipes, andthe
compressor may have a high temperature during unit operation. Do not touch the
compressor and the heat exchanger pipes and coils while the unit is operating.
Verify the unithas cooled down before touchingthem.
Danger: Bodily Injury Hazard. Be careful not to drop any of the unit parts.
Dropping the Covers mightcause bodily injury or damage to the parts.
Safety
Operation Safety Notes
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2.2 Operation Safety Notes
The following safety practices must be complied with:
•CAUTION and WARNING notices posted on the machine and safety
notes in this manual.
•Ensure that all control panels and electrical panels are covered.
•Do not start the unit if any of the safety covers are missing.
•MOVING PARTS –Do not touch the fans during unit operation.
•Do not permit smoking or food in the working area.
•Personnel operating the unit must not remove covers or panels.
•Although the electrical compartment is closed by a door, operator access
to the compartment is strictly forbidden without explicit authorization.
•Ensure that all personnel operating the unit know where the main power
switch is located 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 procedures, use a stable ladder to avoid
high fall injuries.
•To avoid getting caught in moving parts, do not lubricate, repair, or
adjust the machine while in operation unless expressly written in the
manual. Stop the machine according to the machine stopping procedure
before lubricating or performing other maintenance tasks.
•Secure electrical wires and cables to prevent damage.
•The protecting doors and covers should not be opened during machine
operation.
•Replace all safety shields after completing set-up, troubleshooting, and
maintenance procedures.
DryGair Dehumidification Unit Model DG-X
Unit Overview
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3. UNIT OVERVIEW
The DryGair DG-X unit is designed for indoor room dehumidification or small
greenhouses.
The unit reduces the humidity in the closed structure according to a defined
set-point by pulling the wet cold air from the bottom of the room, extracting
the water, and blowing the drier and warmer air back into the room through
an air distribution module.
The water condensed during the dehumidification process is through water
drainage and can be reused for other purposes such as a hydroponic 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 Protective Coating –the unit parts are made of materials
that have a chemical protective coating that improves their resistance to
chemicals and soil disinfectants.
Note
Growers using sulfur or other chemicals should request units that are
treated for chemical resistance.
•Wheels –set of wheels for unit mobility.
Note
The configuration cannot be changed at the customer’s site.
Unit Overview
Unit Description
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3.3 Unit Description
The following figures show the various external 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
DryGair Dehumidification Unit Model DG-X
Unit Overview
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3.4 Unit Labels
The following Identification label is attached to the right-side panel.
Figure 3-2. DryGair Identification label
•Model----------------The model number provides information on the specific unit
•Ps max--------------The maximum operating pressure
•Capacity------------The drying capacity of the unit (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 following warning labels are attached to the panels of the DryGair unit.
Attention high voltage
Caution hot surface
Hearing protection
required
Installation
Site Preparations
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4. INSTALLATION
The installation chapter includes site preparations, transporting and
unpacking instructions, and installation instructions.
Note
The site should be prepared based on the unit configuration and location
and should be done before unpacking and powering the unit on.
4.1 Site Preparations
4.1.1 Location Considerations
•The DryGair unit should be installed indoors in a closed structure and
located in an accessible location for operation and maintenance.
•The unit should preferably be positioned in the center of the room,
blowing air towards and above the plants (in 360 degrees).
•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-shaped metal rails that allow hanging the
unit above the floor from a concrete ceiling or construction.
•The unit in its final position should be positioned at a height at which the
unit’s fan is above the plants. The air should be distributed to the center
of the room.
•If the plants growing method is high gutter, the unit should be elevated
and placed on a stably designed table at a height that enables the
efficient and safe operation of the unit.
DryGair Dehumidification Unit Model DG-X
Installation
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4.1.2 Required Utilities
Prepare the installation site before receiving the DryGair unit.
•Prepare a concrete leveled surface or hanging construction, built
according to the unit dimensions and weight (see details in Appendix A).
•Prepare a 2-pole 40 Amp circuit breaker in a protected location near the
unit.
•Prepare drainage 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 inside the closed structure where the unit is to be
installed must be kept clear, and the floor must be clean and free from
any obstacles that might cause the forklift, truck, or crane to “jump”.
Installation
Transporting the Unit
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4.2 Transporting the Unit
4.2.1 Safety Notes for Lifting and Transporting the Unit
Warning
DryGair declines all responsibility for damage to objects or persons caused
by not observing the safety standards concerning the lifting and moving of
material within the user’s facilities.
•Loading the truck and transporting the unit must be done with the
appropriate equipment, considering the unit size and weight.
Warning
Only qualified and specialized personnel, which are trained 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 personal injury and damage
to the unit or its parts. When using a forklift, be sure not to damage the
compressor.
Caution
The DryGair unit should be lifted only from its front or rear. Special
addons for inserting a forklift are attached to the bottom of the unit.
Ensure the forks are spread to the distance of the unit’s forklift addons.
DryGair Dehumidification Unit Model DG-X
Installation
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Figure 4-1. Forklift addons
•When lifting and transporting the unit, the forklift should 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
Installation
Transporting the Unit
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4.2.2 Special Instructions for Tilting the Unit
The unit can temporarily be carried at an angle inside the room, under the
following precautions:
Caution
Do not tilt the unit to more than 75 degrees from its vertical position.
Preparing the Unit:
1. Ensure the compressor connecting screws are tightly 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 transportation, leave the unit in its vertical
position for at least 3 hours before operating. This will ensure the oil
drains back to the bottom of the compressor.
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Installation
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4.2.3 Receiving the DryGair Unit
The DryGair unit is shipped in a single package, which includes all unit parts
and spare parts. When the unit cannot be packed as a complete unit, as in
some configurations, the additional parts will be added separately and
installed on-site by an experienced technician during the installation process.
Figure 4-2. DG-X carton package
Warning
Proceed with extreme care when performing the following unpacking
procedure, as some machine parts may be fragile. 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 occurred during transportation or delivery.
If there is any visible damage to the unit, do not proceed with the
installation. Leave the packaged unit as it is and immediately contact your
local DryGair representative.
Note
Failure to contact the DryGair representative immediately in these cases
may result in the cancellation of the equipment warranty.
Installation
Unpacking the Unit
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4.3 Unpacking the Unit
4.3.1 Unpacking
The unit and its parts are delivered in a cardboard box that is connected to a
wooden pallet.
Caution
Do not open the packing with sharp tools.
To unpack the unit:
1. Remove the cardboard box.
2. Remove the rails (see following Figure 4-3 for reference).
4.3.2 Parts 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 items were received and that they are not
damaged. Inform the carrier and your local DryGair representative
immediately if any part is missing or damaged.
Table of contents
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