GAI-Tronics Clean Phone 295F Bedienungsanleitung

Pub. 42004-146H

GAI-Tronics Corporation P.O. Box 1060, Reading, PA 19607-1060 USA

610-777-1374 800-492-1212 Fax: 610-796-5954

VISIT WWW.GAI-TRONICS.COM FOR PRODUCT LITERATURE AND MANUALS

GAI-TRONICS® CORPORATION

A HUBBELL COMPANY

Model 295F and 295W

Clean Phone™ Telephone

Confidentiality Notice

This manual is provided solely as an operational, installation, and maintenance guide and contains

sensitive business and technical information that is confidential and proprietary to GAI-Tronics. GAI-

Tronics retains all intellectual property and other rights in or to the information contained herein, and

such information may only be used in connection with the operation of your GAI-Tronics product or

system. This manual may not be disclosed in any form, in whole or in part, directly or indirectly, to any

third party.

General Information

The GAI-Tronics Model 295F Flush-Mount and Model 295W Wall-Mount Clean Phone™ Telephones

are designed for the exacting requirements of clean rooms. They are constructed of stainless steel and

have a completely smooth polyester front panel that will not trap particulate matter. Calls are made by

pressing one of the two auto-dial buttons or by using the fully functional keypad. The Flash button

allows the phone to use the features of a PBX system. The oversized, clearly labeled buttons allow for

easy operation with gloved hands.

Auto-Dial Buttons

The Model 295 Clean Phones feature two auto-dial buttons to store frequently dialed telephone numbers.

If using the auto-dial feature, it is important to program the Auto-dial Time Delay option, which sets the

amount of time lapse between the auto-dial button press and the actual dialing operation. The default

time period of ten seconds could be too long if the feature is to be used for emergency communication.

This feature is fully explained in the Programming Information section.

Auto-Answer

The Model 295 also offers a programmable activation/deactivation of the Auto-answer feature. When

activated, this feature determines how many rings must elapse before auto-answering. The Auto-answer

feature allows the telephone to go off-hook automatically so technicians do not have to leave their work

stations to answer the telephone.

A light under the ON portion of the ON/OFF button is activated to indicate if the telephone is off-hook.

If the Auto-answer feature is not activated, the telephone will not go off hook until someone actually

touches the ON/OFF button.

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Local or Remote Programming

The Model 295 can be programmed locally or remotely using another DTMF telephone. The

programming mode, whether local or remote, must be entered through a series of button presses.

NOTE:The local programming password is factory-programmed as # 1 2 3 and cannot be changed.

The remote password is factory-programmed as 0 2 9 5, but can be changed to any four-digit number

using the programming instructions provided.

Model 295 can also be programmed to use either a long (350 ms) or short (50 ms) called-party loop

current disconnect mode. Determine your system configuration before completing this sequence.

Touch-Tone or Pulse Dialing

The Model 295 can be programmed for touch-tone (also known as dual-tone multifrequency [DTMF]) or

pulse dialing. To determine what kind of dialing you require, contact your local telephone company.

Safety Guidelines

When installing any GAI-Tronics telephone equipment, please adhere to the following guidelines to

ensure the safety of all personnel:

•NEVER install telephone wiring during a lightning storm.

•NEVER install telephone jacks in wet locations unless the jack is specifically designed for wet

locations.

•NEVER touch uninsulated telephone wires or terminals unless the telephone line has been

disconnected at the network interface.

•USE CAUTION when installing or modifying telephone lines.

If you have any questions, please call our toll-free number: 800-492-1212

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Installation

Feedback problems can be avoided by installing each clean telephone in a separate room and wall.

Model 295F Mounting and Wiring

1. Refer to Figure 6 on page 17 for a drilling template.

2. Use the template dimensions as a guide to mark the wall, and make the required cuts.

3. Place the back bracket in the wall. Locate the mounting holes.

4. Drill two holes in the lower right corner and the upper left corner, to secure the bracket. Drill the rest

of the holes you intend to use, and secure the remaining holes.

5. Feed the wiring through the supplied bushing.

6. Snap the cover off of the modular wall jack. Refer to Figure 1 as a wiring guide. Wire the incoming

tip wire to the green wire of the modular jack. Wire the incoming ring wire to the red wire of the

modular jack, the (COM) wire to the yellow wire of the modular jack, and (-48 V) wire to the black

wire of the modular jack.

Figure 1. Modular Wall Jack Wiring for Model 295F

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7. Replace the modular jack cover. Plug the modular connector from the front panel assembly into the

modular wall jack. Take the front panel of the clean telephone and align it with four slots in the

mounting bracket.

8. Using the pressure points shown in Figure 2, push the panel firmly in and then down.

Figure 2. Front panel with pressure points shown

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Model 295W Mounting and Wiring

1. Position the back box on the wall, making sure the box is level. Drill the two corner holes in the

upper left and lower right, and secure it with the screws.

2. Drill the remaining holes, and secure the remaining screws.

3. Feed the wires through the bushing.

4. Snap the cover off the modular wall jack. Refer to Figure 3. Wire the incoming tip wire to the green

wire in the modular jack, the incoming ring wire to the red wire in the modular jack, the (COM) wire

to the yellow wire, and the (-48 V) wire to the black wire. DO NOT REMOVE the blue and white

wires. Replace the modular wall jack cover.

5. Plug the modular connector from the front panel assembly into the modular wall jack.

6. Take the front panel of the clean telephone and align it with the four slots in the mounting bracket.

7. Using the pressure point shown in Figure 2, push the panel firmly in and then down.

Figure 3. Mounting the Model 295W

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Power and Wiring Information (Level C Power)

The Model 295F and 295W Clean Phones are powered from a 48 V dc @ 250 mA power supply. The

power supply should be Nationally-Recognized Testing Laboratory (NRTL) listed per UL specification

UL 1012 or equivalent.

If these clean telephones are powered through the black and yellow “spare pair” in the telephone cable,

the power to these wires must be limited to UL Level C power. To meet the requirements for Level C

power, the current to the telephone must be limited to 1 ampere maximum at 48 V dc.

The GAI-Tronics Model 237 Power Supply is a 48 V dc @ 250 mA UL listed power supply that can be

used to power a single Model 295 Clean Phone. See Figure 4 for wiring details for the Model 237 Power

Supply.

The distance between a telephone and the 48 V dc power source is limited only by the maximum

allowable wire resistance, (32 ohms). See the table for calculated distances for standard wire sizes.

Calculated Distance for Standard Wire Sizes

AWG Feet Meters Miles

24 620 190 0.11

22 985 300 0.18

20 1585 480 0.30

19 1985 605 0.37

18 2500 760 0.47

16 3980 1210 0.75

14 6350 1935 1.2

Refer to the table provided above. When using 24 AWG wire, the 48 V dc power source can be located

up to 620 feet, 190 meters, or 0.11 miles away from the phone. Paralleling pairs of the same gauge wire

will increase operating distance by a factor of two.

Figure 4. Model 237 Power Supply Wiring

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Microphone Sensitivity and Speaker Volume Adjustment

The speaker volume and microphone sensitivity controls are factory-set to a nominal value. This value

may not be suitable for the particular noise environment where Model 295 phone is to be installed. To

obtain the best performance possible in your particular area, we recommend that the following adjustment

procedure be performed after Model 295 is installed in its final location and in typical ambient noise

conditions. You will need a small standard screwdriver for the adjustments.

1. Remove the unit from its wall mounting, but do not unplug it.

2. Call someone, or have someone call you from a handset type telephone. They should be outside your

location and should read a few paragraphs of text.

3. See Figure 5. While they are

reading, locate the MIC adjustment

on the rear of the unit, and turn it

counterclockwise until it is all the

way down.

4. Locate the SPEAKER adjustment.

Turn it until the speaker volume is

set to a level that the person talking

can be comfortably understood

when you are a few feet from the

telephone.

5. Turn the MIC adjustment clockwise

until the speaker starts to “cut out”

the speech from the person

talking—when it sounds like the

first syllable of every word is

missing.

6. Back the MIC adjustment off until

the speech comes back to normal

but no farther. This adjustment

should require only an eighth to a

quarter turn in the counter-

clockwise direction.

7. Try a test conversation on the line. If the quality of communication is unsatisfactory, begin with Step

1 of this section, and readjust Model 295.

Model 295 is now fully adjusted for the acoustics and noise conditions within your area.

Figure 5. Microphone and Speaker Adjustments

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Programming Information

The GAI-Tronics Model 295 Clean Phone is programmable. There are a number of features that can be

customized, or you may use the factory settings (defaults).

The programmable features include setting the auto-dial numbers, setting the auto-dial time delay, setting

the number of rings before Model 295 automatically answers, selecting DTMF or pulse dialing, and

selecting the remote programming password.

Model 295 Clean Phone can be programmed in two ways—local and remote. The front panel of the

Model 295 Clean Phone is used for local programming with the local password. To program the unit

remotely, you must call the Model 295 Clean Phone, and enter the password (from a DTMF phone).

Programming the unit is the same whether the programming mode is entered locally or remotely except

that each mode has its own unique password. The unit must be in the programming mode before

attempting to program any functions. After each programming key sequence, either a confirmation tone

(a single beep) or an error tone (a high-low tone) will sound. A confirmation tone indicates the command

was accepted, and that the new input has been saved. Any fully completed programming sequence is

saved in the permanent memory. If, however, you begin programming a function, and do not complete all

the steps, it will not be saved, and all the information for that function must be re-entered.

The Programming Table lists the programmable functions on the Model 295 Clean Phone and the input

codes for each of these functions. The table also lists the defaults (factory settings).

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Local Programming

Entering the Local Programming Mode

To program the Model 295 Clean Phone locally, you must enter the local programming password, which

is fixed and cannot be changed. Enter the key sequence # 1 2 3to access the local programming mode.

The unit will emit a high pitch beep for each correct key pressed. The light under the front panel

ON/OFF button will begin blinking at a slow rate to indicate the programming mode has been entered. If

an incorrect key is pressed, you will hear a single low pitch beep to warn that the password is incorrect.

Following the correct entry of the local programming password, the unit is in a programming mode where

the user may program the unit as desired. For programming instructions, see the Programming Table.

Each digit of the local programming password must be entered within 5 seconds of the one before it. If a

digit is not entered within the 5-second limit, the unit will emit a single low pitch beep and exit the local

programming mode. If the unit times out waiting for the password, or if the password entered incorrectly,

the unit will automatically exit the local programming mode.

The unit will ignore any incoming calls when in the local programming mode.

Exiting the Local Programming Mode

There are two ways to exit the local program mode:

•If there is no keypad activity for 20 seconds, the unit automatically exits the local program mode.

•The user can terminate the mode at any time by pressing the ON/OFF button.

•The unit will emit a short low pitch beep and turn off the light under the ON/OFF button

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Remote Programming

Entering the Remote Programming Mode

Using a DTMF telephone, dial the unit’s telephone number, wait for an answer tone, and enter the unit’s

password. If you have not changed the password, enter 02 9 5. The password provides two benefits—

first, it allows Model 295 to be programmed from any DTMF telephone, and second, permits only

authorized personnel (those informed of the password) to reprogram the unit. If there is a security leak,

the password can be updated in a matter of seconds. The password can be changed through local or

remote programming.

The unit will answer the call (following the programmed number of rings), then send a short tone (answer

tone). The password must be entered within two seconds of hearing the answer tone. The remote

programming mode can only be entered when the entire password has been entered in the allotted time.

The unit will immediately hang up (disconnect) if the password is entered incorrectly. Failure to begin

entering the password after the answer tone will result in an intercom call.

The front panel light under the ON button will blink slowly, indicating that the unit is in the programming

mode. All front panel keys and incoming calls are ignored during the remote programming mode.

Exiting the Remote Programming Mode

There are three ways to exit the remote programming mode:

•The unit detects the caller has hung up.

•The caller enters *for at least two seconds.

•The unit times out waiting for a digit (20 seconds).

In any event, the unit will go on-hook and extinguish the light under the ON button.

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