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Incubators (Model B)

Tempering processes up to +70°C play an important role in research, for example the microbiology, in the medical sector, and for a great variety of industrial and other applications. MEMMERT designed its incubators model BE (E-class electronically controlled) and BP (P-class equipped with electronic process controller) ... more

 Cleanroom Equipment
Home : Our Principals : ESCO : Cleanroom Equipment

Esco Air Shower

Esco Air Showers are self-contained air chambers installed at the entrance to cleanrooms in order to minimise the amount of particulate contaminants entering the cleanroom. Personnel move through the air shower while particulate contaminants are washed off with high velocity HEPA-filtered air jets. The high air velocity of 20-22m/s ensures efficient scrubbing action necessary to remove particulate matter. Contaminated air is then taken in through the base of the unit, filtered, and recirculated into the chamber.

FEATURES

EAS features a programmable microprocessor control, giving users a great extent of self-customization and autonomy. Because all processes are controlled by the microprocessor, there is a high level of precision with regards to the functions of the EAS.

Unlike conventional air showers which come with a pre-programmed mode of operation, EAS allows users a choice of all three modes just by the touch of a button.

THREE MODES OF OPERATION :

  • One-Way : Door at cleanroom interior is locked at rest, door at cleanroom exterior is unlocked. Person enters and door at cleanroom exterior locks. Air shower cycle starts. At end of cycle door at cleanroom exterior stays locked. Door at cleanroom interior unlocks. Person exits via the door at cleanroom interior. When door at cleanroom interior closes, it locks. Door at cleanroom exterior unlocks.

  • Two-Way One-Way : Only one door at a time can be opened. Both doors are unlocked at rest. Person enters door at cleanroom exterior. Air shower cycle starts. At end of cycle person exits via door at cleanroom interior. Alternatively, person can enter via door at cleanroom interior, proceed through unit and exit via door at cleanroom exterior without initiating the blowers.

  • Two-Way : Cycle runs in both directions. Only one door at a time can be opened. Person can go in either direction and the air shower will cycle.

CONSTRUCTION FEATURES

  • The body of the EAS is constructed from rigid and rust-proof electro-galvanised steel sheets. These sheets have an abrasion-resistant oven-baked powder-coated finish.

  • Adjustable stainless steel nozzles are durable and electrolytic zinc-coating on the electro-galvanized steel provides and additional barrier of protection against corrosion and rust as compared to convential uncoated cold-rolled steels.

  • Heavy-duty, durable aluminium framed door assemblies with clear glass windows. The doors are fitted with indicator lamps. The flooring is constructed using abrasian-resistant stainless steel which facilitates cleaning.

  • Industrial-grade electromagnetic locks have no moving parts and will not fail.

  • Emergency stop button mounted on both sides of the shower allows all doors to be unlocked instantly.

  • Convenient mains breaker switch mounted inside the work zone allows rapid shutdown and all doors to be unlocked instantly.

  • Indicator lights mounted on both sides of the air shower unit exterior regulate traffic flow in and out of the cleanroom.

  • Electronically ballasted lighting reduces energy costs compared to conventional electromagnetic ballasts. Diffusers ensure even and uniform lighting throughout the chamber.

  • Permanently lubricated direct drive centrifugal blowers are used in conjunction with stainless steel air nozzles. Together they provide high velocity air jets for an efficient scrubbing cleaning action.

  • Resettable circuit breaker for both the blower circuit and electronics boards for increased electrical safety.

  • >All electrical components are UL listed / recognised.

FILTRATION AGENTS

  • Contaminated air is filtered through secondary filters and HEPA filters featuring 99.99% efficiency in the removal of particles to 0.3 microns in size.

  • A disposable pre-filter with 85% arrestance extends the life of the main filter.

OPERATING FEATURES

  • Depending on the mode of operation currently in use, indicator lamps at the doors will be lit red or green according to accessibility based on the stage of shower. A red light will bar personnel from opening the door and entering / exiting while a green light gives clearance to enter/exit.

  • Besides choosing the mode of operation, users also have the autonomy to set the pre-purge time, shower time and reset duration.

  • To enhance cleanroom integrity, there is a pre-purge period set to activate the blowers when the air shower is just turned on. Users can choose to bypass the pre-purge by setting the duration to 0. The default duration is 10s while the maximum duration is 3 min.

  • Interlocking system prevents both doors from being opened at the same time, thus preserving cleanroom integrity.

  • The duration of shower is programmable from a minimum of 5s up to a maximum of 3 min. The default duration is 12s.

  • If the air chamber is idle it will reset to standby mode. During standby mode, blowers run at a lower speed at minimal energy while keeping the chamber clean. Ceiling lights are turned off if energy saving mode is chosen. The time that is taken to switch to standby mode is the reset duration. Users can choose from a duration of 5s up to 1 min. The default period is set to 10s.

  • The EAS is also orientation independent. Users are able to change the location of gray and clean sides without reprogramming the air shower or rewiring the doors.

  • The reset default option allows users to reset the shower period, pre-purge period and reset duration to default values. It also activates the energy saving mode. But for safety reasons, the mode of operation and the orientation of the air chamber are unchanged in the event of a reset or power failure.

  • The above mentioned options and customization can be conveniently deployed by accessing the menu. To prevent unauthorised access, an Administrator Password and PIN can be configured to prevent unauthorised modification to operation parameters.

  • To enhance safety, EAS has a function to detect illegal operation. Clear error messages will be displayed on a LCD screen should safety or cleanliness of the air chamber be violated. The LCD screen will also display a countdown of cleaning / shower period.

  • One key attraction of the EAS lies in the wide range of options it provides to its users as well as its decreased dependency on service engineers. The options are easy to customise with the user friendly interactive interface. Personnel using the air shower will also find the instructive message display and indicator lamps at doors easy to understand.

MICROPROCESSOR CONTROL FEATURES

  • Easy-to-clean soft touch control pad mounted centrally inside air shower chamber (no relays or switches which may corrode).

  • Backlit LCD display reports air shower cycle progress and operational status.

  • Clearly visible LEDs on the touch control and display pad indicate door interlock and shower sequence

  • 24 hour clock display on the LCD. Users are also able to customise the time setting according to their geographical locations.

  • The air shower sequence may be adjusted via the soft touch control pad. Any of the 3 standard Esco air shower sequences may be chosen (refer to catalog for description of 3 standard shower sequences). Shower duration is also easily adjusted via the control keypad using the intuitive menu interface.

  • ADMIN PIN feature restricts access and ensures unauthorised personnel are not able to change any operating parameters on the microprocessor control menu

  • Watchdog timer resets microprocessor in case of any internal failure, thus restoring the air shower to a safe state

  • All doors are unlocked automatically in case of a power failure for safety reasons

  • Special mode in which the fan may be operated continuously for service and air velocity checks

  • Optional energy saving mode may be enabled via the keypad to automatically turn off the lights in the air shower when no personnel are inside

  • Auto reset unlocks doors in case personnel open the air shower door but do not actually enter thus preventing accidental lock-outs

  • Customised sequence programming is available on request from Esco

Technical Data

A Series

MODEL

EAS-1A1

EAS-2A1

EAS-3A1

External Dimensions (L x W x H)

1260 x 1000 x 2050 mm (49.7" x 39.4" x 80.7")

1260 x 2000 x 2050 mm (49.7" x 78.7" x 80.7")

1260 x 3000 x 2050 mm (49.7" x 118.1" x 80.7")

Internal Work Zone (L x W x H)

790 x 920 x 1930 mm (31.1" x 36.2" x 76.0")

790 x 1920 x 1930 mm (31.1" x 75.6" x 76.0")

790 x 2920 x 1930 mm (31.1" x 75.6" x 76.0")

Air Change

371 per hour

356 per hour

351 per hour

Air Velocity

20-22 m/s or 3,937-4,330 fpm

Number of Nozzles

6

12

18

Air Shower Duration

Factory setting at 12 seconds (adjustable)

Persons Per Cycle

1

2-3

4-6

Personnel Flow [ Persons / Min. ]

4

8-12

15-23

Above figures based on: Total Cycle Time of 16 seconds (= 12 seconds of Air Shower + 4 seconds for buffer time / personnel entrance and exit)

Filtration Efficiency

Main Filter: >99.99% at 0.3 µm
Pre-Filter: Arrestance 85%, efficiency 20%

Filtration Elements

Main Filter: HEPA filter
Pre-Filter: Disposable and non-washable polyester .bers

Noise Level

<58 dBA (at initial blower speed setting; subject to ambient conditions)

Fluorescent Lighting

20W x 1

20W x 2

20W x 3

Main Body

1.5 mmt electro-galvanised steel / White oven-baked epoxy powder-coated finish

Power Supply Options

Choose from the following power supply con.guration codes when ordering (e.g. EAS-1A3, for 220-240VAC 60Hz)
1: 220-240VAC 50HZ 2: 110-130VAC 60HZ 3: 220-240VAC 60HZ 4: 110-130VAC 50HZ 5: 100-110VAC 50HZ/60HZ

Max. Power Consumption

During Operation

245W

490W

735W

During Standby

113W

226W

339W

Gross Weight

520 kg / 1146 lbs

1040 kg / 2293 lbs

1560 kg / 3440 lbs

Net Weight

355 kg / 783 lbs

710 kg / 1565 lbs

1065 kg / 2348 lbs

Crating Size Fully Assembled

1420 x 1220 x 2210 mm (55.9" x 48.0" x 87.0")

(1420 x 1220 x 2210) x 2   --  (55.9" x 48.0" x 87.0") x 2

(1420 x 1220 x 2210) x 3 -- (55.9" x 48.0" x 87.0") x 3

Crating Size Unassembled

2180 x 1150 x 900 mm -- 85.8" x 45.3" x 35.4"

(2180 x 1150 x 900) x 2 -- (85.8" x 45.3" x 35.4") x 2

(2180 x 1150 x 900) x 3 -- (85.8" x 45.3" x 35.4") x 3

B-Series1

MODEL

EAS-1B1

EAS-2B1

EAS-3B1

External Dimensions (L x W x H)

1530 x 1000 x 2050 mm (60.2" x 39.4" x 80.7")

1530 x 2000 x 2050 mm (60.2" x 78.7" x 80.7")

1530 x 3000 x 2050 mm (60.2" x 118.1" x 80.7")

Internal Work Zone (L x W x H)

790 x 920 x 1930 mm (31.1" x 36.2" x 76.0")

790 x 1920 x 1930 mm (31.1" x 75.6" x 76.0")

790 x 2920 x 1930 mm (31.1" x 115.0" x 76.0")

Air Change

743 per hour

712 per hour

702 per hour

Air Velocity

20-22 m/s or 3,937-4,330 fpm

Number of Nozzles

12

24

36

Air Shower Duration

Factory setting at 12 seconds (adjustable)

Persons Per Cycle

1

2-3

4-6

Personnel Flow [ Persons / Min. ]

4

8-12

15-23

Above figures based on: Total Cycle Time of 16 seconds (= 12 seconds of Air Shower + 4 seconds for buffer time / personnel entrance and exit)

Filtration Efficiency

Main Filter : >99.99% at 0.3 µm
Pre-Filter : Arrestance 85%, efficiency 20%

Filtration Elements

Main Filter : HEPA filter
Pre-Filter : Disposable and non-washable polyester .bers

Noise Level

<58 dBA (at initial blower speed setting; subject to ambient conditions)

Fluorescent Lighting

20W x 1

20W x 2

20W x 3

Main Body

1.5 mmt electro-galvanised steel / White oven-baked epoxy powder-coated finish

Power Supply Options

Choose from the following power supply con.guration codes when ordering (e.g. EAS-2B5, for 100-110VAC 50HZ/60HZ)
1: 220-240VAC 50HZ 2: 110-130VAC 60HZ 3: 220-240VAC 60HZ 4: 110-130VAC 50HZ 5: 100-110VAC 50HZ/60HZ

Max. Power Consumption

During Operation

458W

916W

1374W

During Standby

162W

324W

486W

Gross Weight

1420 kg / 3131 lbs

1420 kg / 3131 lbs

2130 kg / 4696 lbs

Net Weight

824 kg / 1817 lbs

824 kg / 1817 lbs

1236 kg / 2725 lbs

Crating Size Fully Assembled

(1680 x 1220 x 2210) x 2 --- (66.1" x 48.0" x 87.0") x 2

(1680 x 1220 x 2210) x 2 --- (66.1" x 48.0" x 87.0") x 2

(1680 x 1220 x 2210) x 3 --- (66.1" x 48.0" x 87.0") x 3

Crating Size Unassembled

(2180 x 1150 x 1200) x 2 --- (85.8" x 45.3" x 47.2") x 2

(2180 x 1150 x 900) x 2 --- (85.8" x 45.3" x 35.4") x 2

(2180 x 1150 x 900) x 3 --- (85.8" x 45.3" x 35.4") x 3


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Garment Storage Cabinet
Soft Capsule Soft Wall Cleanroom
Cleanroom Transfer Hatch
Pass Box
Air Shower Pass Box

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Biotechnology Equipment ESCO
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Sentra Niaga Puri Indah Blok T3-10
Jakarta 11610 - Indonesia
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