GAI-Tronics Clean Phone 295F, Clean Phone 295W User Manual

Pub. 42004-146H

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. GAI­Tronics 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.

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

610-777-1374  800-492-1212  Fax: [phone]

V

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

Pub. 42004-146H

Model 295F and 295W Clean Phone™ Telephone Page:

2 of 17

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.

N

OTE: 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

d:\standard ioms - current release\42004 instr. manuals\42004-146h.doc

11/05

Pub. 42004-146H

Model 295F and 295W Clean Phone™ Telephone Page:

3 of 17

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

d:\standard ioms - current release\42004 instr. manuals\42004-146h.doc

11/05

Pub. 42004-146H

Model 295F and 295W Clean Phone™ Telephone Page:

4 of 17

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

d:\standard ioms - current release\42004 instr. manuals\42004-146h.doc

11/05

Pub. 42004-146H

Model 295F and 295W Clean Phone™ Telephone Page:

5 of 17

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.

d:\standard ioms - current release\42004 instr. manuals\42004-146h.doc

11/05

Figure 3. Mounting the Model 295W

Pub. 42004-146H

Model 295F and 295W Clean Phone™ Telephone Page:

6 of 17

Pow er and Wiring Information (Le v el C Po wer)

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.

d:\standard ioms - current release\42004 instr. manuals\42004-146h.doc

11/05

Figure 4. Model 237 Power Supply Wiring