Ebac DD700 460V User Manual

Drawing : - TPC 401
Issue : - 5
Date : - 28/04/14

DD700

10551GR-US – 460V / 3PH / 60HZ

INDUSTRIAL DEHUMIDIFIER

OWNER’S MANUAL

www.eipl.co.uk

Drawing : - TPC 401
Issue : - 5
Date : - 28/04/14

DD700

PACKAGE CONTENTS

Item Description Quantity

10551GR-US Dehumidifier 1

TPC401 Manual 1

Drawing : - TPC 401
Issue : - 5
Date : - 28/04/14

UNPACKING

Carefully remove the DD700 dehumidifier unit from its transit box and visually
check for signs of transit damage. If there is evidence of damage DO NOT
attempt to operate the unit, call your supplier for advice. Do not discard the
packing, it will be useful when transporting the dehumidifier unit in the future.

INTRODUCTION

Dehumidifiers remove moisture from the air that is circulating through the unit.
The resulting reduction of relative humidity helps prevent rust, rot, mould,
mildew and condensation within the room, or other enclosed spaces where
the dehumidifier is used.
The DD700 is of the desiccant wheel type designed to dry air by passing a
large volume of air, the “process” air through a slowly rotating Silica gel rotor.
Silica gel is a hygroscopic material that absorbs moisture direct from the air.
As the air passes through the rotor the humidity of the air is reduced, whilst
the moisture content of the rotor is increased. A smaller volume of air, the
reactivation air, is heated by an internal heater and passes through a portion
of the rotor in the opposite direction. As this heated air passes through the
rotor it will “reactivate” it by removing the moisture content from the silica gel
material. The reactivation air will leave the humidifier as warm, moist air and
must be vented to outside of the building.

Continuous circulation of the room air through the dehumidifier unit gradually
reduces the relative humidity in the room.

The DD700 dehumidifier is a robust, compact unit designed to control the
humidity in the enclosed space in which it is placed. The casing is fabricated
from Steel then painted and has been designed for the exacting conditions
which can prevail in offices, shops, houses, restaurants, public houses etc. It
combines lightness and compactness with high reliability and strength.

The unit is thermally protected and will automatically switch off in excessive or
abnormal conditions.

The dehumidifier has two separate filters. One in the “process” air inlet and
one in the “reactivation” air inlet, used to clean the air entering the
dehumidifier.

Drawing : - TPC 401
Issue : - 5
Date : - 28/04/14

SPECIFICATIONS

MODEL: DD700

HEIGHT: 1020mm (40”)

WIDTH: 711mm (28”)

DEPTH: 584mm (23”)

WEIGHT: 85Kg (187.4lbs)

POWER SUPPLY: 460V, 3 ph, 60Hz

POWER 7.5 kW (max)

F1 CONTROLS FUSE 2A 250V 5x20 Cartridge fuse

PROCESS AIRFLOW MAXIMUM: 1500m3/hr (883 cfm)

PROCESS AIRFLOW NOMINAL: 700m3/hr (412 cfm)

REGENERATION AIRFLOW NOMINAL: 160m3/hr (94 cfm)

PROCESS AIR OUTLET DIA: 200mm (8”)

REGENERATION AIR OUTLET DIA: 150mm (6”)

ROTOR WHEEL SPEED: 13.6

ROTOR SIZE DIA X DEPTH: 350mm (13.8”) x 100mm (4”)

HIGH EXTRACTION SETTING

109 l/day (231 ppd)

@ 27°C 60% RH:

HIGH EFFICIENCY SETTING

87 l/day (184 ppd)

@ 27°C 60% RH:

DEEP DRYING SETTING

97 l/day (205 ppd)

@ 27°C 60% RH:

TYPICAL DRY AIR OFF

18

HIGH EXTRACTION SETTING (%RH)

TYPICAL DRY AIR OFF

18

HIGH EFFICIENCY SETTING (%RH)

TYPICAL DRY AIR OFF

8

DEEP DRYING SETTING (%RH)

MINIMUM OPERATING TEMPERATURE: -20°C (-4°F)

MAXIMUM OPERATING TEMPERATURE 40°C (104°F)

Drawing : - TPC 401
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Date : - 28/04/14

UNIT CAPACITY

The ambient conditions of the area to be dehumidified will determine the
amount of water extraction the unit is cable of.
Measure the ambient conditions of the area to be determined and then use
that information with the following capacity diagram to determine the unit
capacity.

Drawing : - TPC 401

-

WARNING

Issue : - 5
Date : - 28/04/14

INSTALLATION

The DD700 is designed for indoor use. The unit should be placed on a level
surface and a space of 3 ft free around all faces to allow access for any duct
work and servicing.

Connecting duct work:

The regeneration outlet must be ducted to outside the area being
dehumidified. The outlet duct spigot is 6” diameter and only 6” ducting or
greater should be attached.

The process outlet can be ducted to a specific area or another room. The
outlet duct spigot is 8” diameter and only 8” ducting or greater should be
attached.

Power Supply & Humidistat Control:

The unit must be connected to a suitable 460V, 3 phase, 60Hz supply.

THIS APPLIANCE MUST BE EARTHED

Feed power cables through the gland provided and then wire the unit as
shown below.

An external humidistat can also be used to control the relative humidity in the
dehumidified area. If a humidistat is used then the wires should pass through
the gland provided and then wired as below.

-

Drawing : - TPC 401

PROCESS AIR

REGEN AIR

TEMPERATURE

STANDARD

HIGH

DEEP DRYING

Issue : - 5
Date : - 28/04/14

Control Settings

Once the unit is positioned correctly, required duct work attached and the
power supply connected, the fan speeds and temperature control need to be
set correctly.

The fan speed controls are located behind a removable cover, to the right of
the main controls. The controls are numbered 1 to 10, with 10 being the
maximum speed.

The temperature control regulates the temperature of the reactivation airflow
onto the desiccant wheel. The control can be set up to a maximum of 145°C
To adjust the temperature control simply press and hold the UP or DOWN
arrows until the required temperature is selected. Once the required set point
is reached release the buttons and the value is stored.

For normal (efficient) operation the process airflow should be set to 412cfm,
and the regeneration airflow set to 94. Measurements should be taken at the
duct outlets using a suitable instrument.
The temperature setting should be set to 90°C above the ambient
temperature of the area being dehumidified

If high moisture extraction is required it will be necessary to increase both the
process and regeneration airflows. The temperature control setting should
also be increased.

If very low humidity levels are required then the process airflow should be
reduced.

The following table should be used as a guide:

FLOW
(M³/H)

FLOW
(M³/H)

RISE

(K)

(EFFICIENT)

EXTRACTION

(LOW RH)

412 94 90

530 147 110

294 147 110

Drawing : - TPC 401
Issue : - 5
Date : - 28/04/14

FAN PERFORMANCE CURVES

For example:
If the total system resistance is 500pa then the process fan selector would
have to be set to No 7 to achieve the required airflow of 412 cfm

For example:
If the total system resistance is 300pa then the regen fan selector would have
to be set to No 8 to achieve the required airflow of 94 cfm

Drawing : - TPC 401

M

0

Issue : - 5
Date : - 28/04/14

OPERATION

The electrical controls are located on the front of the unit. They are:

• On / Off Switch

Dehumidifier in continuous operation

A

Dehumidifier operation by means of an external
humidistat

Dehumidifier OFF

• An hour counter is provided to display the total time the unit has been
in operation

• DRYING lamp – unit is in drying mode.

• HEATING lamp – indicates heating elements are on. Cycle on/off when

in drying mode.

• FAULT lamp – unit has a fault

To start the dehumidifier, turn the On / Off switch to position M.
After a slight delay the fans will operate – air can be felt blowing from the air
outlets and the heater will come on.
The unit will operate continuously at this setting.

If an external humidistat control is fitted, turn the unit to switch to position A.
Depending on the setting of the humidistat, the dehumidifier may switch off as
the relative humidity in the room decreases. As the humidity increase the unit
will automatically switch back on.

High Temperature Cut-Out:

The DD700 dehumidifier has been designed to work in ambient conditions of

-4ºF to +104ºF. Should the temperature in the room become excessive a
manual overheat protector will operate, switching off the heaters. The fans
and drive motor will continue to operate but the fault lamp will illuminate. Prior
to resetting the protector, check that the dehumidifier is installed correctly and
the ambient temperature does not exceed 104°F.

See repairs section for details on resetting device.

Drawing : - TPC 401
Issue : - 5
Date : - 28/04/14

SAFETY

-WARNING-

♦ DO NOT ALLOW CHILDREN TO PLAY WITH OR AROUND THE

UNIT. ENSURE THE UNIT IS INACCESIBLE TO CHILDREN
WHEN NOT ATTENDED.

♦ DO NOT USE THIS UNIT IN AN ENVIRONMENT CONTAINING

FLAMMABLE FUMES

♦ DO NOT USE THIS UNIT IF THE CABINET OR POWER CORD IS

DAMAGED

♦ DO NOT INSERT OBJECTS INTO ANY OF THE GRILLES ON

THE MACHINE

♦ DO NOT COVER OR OBSTRUCT AIRFLOW FROM THE

GRILLES

♦ DO NOT OPERATE THE UNIT WITH THE COVERS REMOVED

♦ DO NOT ATTEMPT ANY REPAIRS SHOULD THE UNIT FAIL TO

OPERATE

♦ DO NOT STAND ON THE UNIT

♦ DO NOT LIFT THE UNIT WHEN SWITCHED ON

♦ DO CHECK THE PLUG ON THE EQUIPMENT MATCHES THE

SUPPLY

♦ DO USE THE UNIT FOR THE PURPOSE FOR WHICH IT WAS

DESIGNED

♦ DO ENSURE THE POWER CORD AND SUPPLY IS EARTHED

CORRECTLY

♦ DO USE A RESIDUAL CURRENT DEVICE “RCD” WHERE

POSSIBLE

♦ DO KEEP THE UNIT DRY. NEVER USE A HOSE OR PRESSURE

WASHER TO CLEAN THE UNIT.

Drawing : - TPC 401

WARNING:

Issue : - 5
Date : - 28/04/14

ROUTINE MAINTENANCE & REPAIR

To ensure continued full efficiency of the dehumidifier, maintenance
procedures should be performed as follows:

ENSURE THAT THE POWER CORD TO THE MACHINE HAS

BEEN DISCONNECTED BEFORE CARRYING OUT ROUTINE

MAINTENACE.

SWITCH OFF THE DEHUMIDIFIER APPROXIMATELY 15

MINUTES PRIOR TO REMOVING ANY PANELS, ALLOWING

THE HEATER TO COOL DOWN

• We recommend that the filters are checked at least once a month.
Intervals for cleaning or replacement of filters will depend on the
installation

• Never operate the dehumidifier without the filters, as the rotor can be
damaged by dust.

To carryout the following, it is necessary to remove the side panels.

This machine should be serviced by qualified Ebac Industrial Products Ltd
personnel or other persons having technical competence in servicing
electrical equipment following the instructions in this Service Manual.

• The rotor is maintenance free. However, should it be necessary to
clean the rotor, compressed air should be used to carefully blow dirt
from the rotor.

• The heaters are maintenance free. However should it be necessary to
clean the heaters, compressed air should be used to carefully blow dirt
from the heaters.

• Check that the fans are firmly secured and that the fan rotates freely.

• Check all wiring connections.

• Check the belt tensioning at regular intervals.

• The overheat protector is located inside the unit, below the desiccant

wheel. To reset this device press the red button.

• Should an electrical component fail, consult the Factory Service Center
to obtain the proper replacement part.

Drawing : - TPC 401
Issue : - 5
Date : - 28/04/14

F ANY OF THE PRECEDING PROBLEMS OCCUR, CONTACT THE EBAC

I

INDUSTRIAL PRODUCTS LTD SERVICE CENTER PRIOR TO CONTINUED

OPERATION OF THE UNIT TO PREVENT PERMANENT DAMAGE

TROUBLESHOOTING

SYMPTOM

CAUSE

REMEDY

.

Little or no

dehumidification

capacity

Dehumidifier does

not start

Rotor does not

rotate

No Dry or Wet Air

Airflow

Filter clogged

No regeneration heat Check Heaters / OHP

Reduced airflow Check fans / duct

No rotation of Rotor Check belt tension / drive motor

Air leakage Check sealing

No power Check fuse

Correct switch setting Check Auto / Manual switch

Loose electrical wiring

Drive belt slipping Check belt tension

Drive belt broken Replace drive belt

Rotor jammed Check centre shaft, rim of rotor

Drive motor faulty Check supply /Replace motor

Filter clogged Clean or replace filters

Fan faulty Check supply / fan

Ducts blocked Check duct for obstruction

Clean or replace filters

Check wiring diagram - fault

find & repair

Fan loose Check fans secured firmly

Noisy

Loose fastenings Tighten all fastenings

Drawing : - TPC 401
Issue : - 5
Date : - 28/04/14

1

3

OF

SHEET

1/10

1

W DAGLISH

1

DD700

DRG.NO.

DRAWN :

CAD SCALE :

N/A

GENERAL ASSEMBLY / OVERVIEW

1003.

2

PROCESS

AIR INLET

1 12/02/13 ORIGINAL

ISS. DATE COMMENTS

4

REGENERATION

AIR INLET

TITLE

MATERIAL

DD

D
NN

ND
AA

AN
LL

LA
KK

KL
CC

CK

MM

M

UU

UC

AA

AM

AA

AU

HH

HA

DD

D

A

RR

RH

NN

ND

PP

P

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UR

AA

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IS

oo

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E

B

C

EE

EN

BB

BI

CC

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DIMENSIONS IN m.m.

N/A

2

FINISH

1

0.25

0.5 DEGREE

0.05

OTHERWISE STATED

ANGULAR

TOLERANCES UNLESS

0.0

0.00

0.

DO NOT SCALE

77

7
99

3

133 314

4

65 451

301

263

634

3

97

3RD ANGLE PROJECTION

99

99
1

11

19

4

718

1

40

40

7

5

IF IN DOUBT ASK

3

4

5

POWER

ISOLATOR

ELECTRICAL

CONNECTIONS

PANEL

MAINS INLET GLAND

200

150

n

6

D D

AIR OUTLET

REGENERATION

C C

n

580

PROCESS

AIR OUTLET

301.7

851.7

290

1

7

B B

HUMIDITY SENSOR

WIRING GLAND

6

A A

2

3

OF

SHEET

1/10

1

W DAGLISH

1

DD700

DRG.NO.

DRAWN :

CAD SCALE :

N/A

GENERAL ASSEMBLY / OVERVIEW

N/A

2

1 12/02/13 ORIGINAL

ISS. DATE COMMENTS

3

TITLE

MATERIAL

DD

D
NN

ND
AA

AN
LL

LA
KK

KL
CC

CK

MM

M

UU

UC

AA

AM

AA

AU

HH

HA

DD

D

A

RR

RH

NN

ND

PP

P

UU

UR

AA

AN

OO

OP

DD

DU

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D

GG

GL

..

.

SS

SH

NN

NG

II

IS

oo

o.

E

B

C

EE

EN

BB

BI

CC

Co

DIMENSIONS IN m.m.

OTHERWISE STATED

TOLERANCES UNLESS

77

7
99

97

3RD ANGLE PROJECTION

99

99
1

11

19

4

2

FINISH

1

0.25

0.5 DEGREE

0.05

ANGULAR

0.0

0.00

0.

DO NOT SCALE

IF IN DOUBT ASK

3

4

5

6

D D

C C

B B

A A

5

6

3

3

OF

SHEET

1/8

1

W DAGLISH

1

DD700

DRG.NO.

DRAWN :

CAD SCALE :

N/A

GENERAL ASSEMBLY / OVERVIEW

N/A

2

1 12/02/13 ORIGINAL

ISS. DATE COMMENTS

DETAIL A

SCALE 1/3

3

TITLE

MATERIAL

DD

D
NN

ND
AA

AN
LL

LA
KK

KL
CC

CK

MM

M

UU

UC

AA

AM

AA

AU

HH

HA

DD

D

A

RR

RH

NN

ND

PP

P

UU

UR

AA

AN

OO

OP

DD

DU

LL

LA

HH

HO

D

GG

GL

..

.

SS

SH

NN

NG

II

IS

oo

o.

E

B

C

EE

EN

BB

BI

CC

Co

DIMENSIONS IN m.m.

OTHERWISE STATED

TOLERANCES UNLESS

77

7
99

97

3RD ANGLE PROJECTION

99

99
1

11

19

4

2

FINISH

1

0.25

0.5 DEGREE

0.05

ANGULAR

0.0

0.00

0.

DO NOT SCALE

IF IN DOUBT ASK

3

4

5

A

6

D D

C C

B B

A A

5

6

Drawing : - TPC 401

UK Head Office

American Sales Office

German Sales Office

Issue : - 5
Date : - 28/04/14

Ebac Industrial Products Ltd

St Helens Trading Estate

Bishop Auckland

County Durham

DL14 9AD

Tel: [phone]

Fax: [phone]

www.eipl.co.uk

[e-mail]

Ebac Industrial Products Inc

700 Thimble Shoals Blvd.
Suite 109, Newport News

Virginia, 23606-2575

Ebac Industrial Products Ltd.

Gartenfelder Str. 29-37

Gebäude 35

D-13599, Berlin

USA

Tel: [phone]

Fax: [phone]

www.ebacusa.com

[e-mail]

Tel: [phone]

Fax: [phone]

www.eip-ltd.de

[e-mail]

Germany