Page 1
USER / INSTALLATION INSTRUCTIONS FOR SMART
CLEAN ROOM PHONE MODEL-CRIII SS (AD)
1) Connect EPABX EXTENSION line to the unit.
2) Connect A/C mains input to the unit.
3) Switch on the supply to the unit.
Telephone operation:-
PROGRAMMING AUTODIAL:
1) PRESS AUTODIAL KEY
2) SWITCH ON POWER SUPPLY TO THE TELEPHONE
3) RELEASE AUTODIAL KEY
4) DIAL REQUIRED EXTENSION NUMBER TO BE AUTODIALED
5) DIAL # ( HASH ) TO COMPLETE PROGRAMMING
OUT GOING CALLS:
1) Press ON, dial tone will be heard on speaker dial required extension number.
2) On connection communicate hands free.
3) Call get Auto disconnect after communication is over in few seconds.
4) To AUTO DIAL PRESS ON FOLLOWED BY AUTODIAL ON GETTING
DIALTONE
INCOMING CALLS:
1) The telephone will ring on incoming call.
2) The inbuilt Ringer wills energies.
3) To communicate press ON and Speak Hands free.
4) Call get auto disconnect after communication is over.
Kindly note: Use 100 mA fuse for telephone & 250mA for
external driver only
Page 2
CONNECTION DIAGRAM OF CLEAN ROOM PHONE WITH
EPBAX
EPBAX
AC IN 220/110 VAC
AC IN 220/110 VAC
CLEANROOM
PHONE CR-III SS
Page 3
TROUBLESHOOTING GUIDE
NATURE OF FAULT
CHECK POINTS
SYSTEM DEAD
CHECK MAINS CORD
CHECK FUSE
CHECK INPUT VOLTAGE 110 V / 220 V AC
NO ACTIVATION
CHECK AC MAINS
CHECK TELEPHONE LINE
CHECK TELEPHONE LINE VOLTAGE, SHOULD BE
SAME AS THAT AT MDF ( 24 V / 48 V )
ABNORMAL OPERATION
CHECK LINE VOLTAGE WITH RESPECT TO EARTH,
ONLY ONE LINE SHOULD SHOW VOLTAGE, OTHER
SHOULD SHOW ZERO
NO COMMUNICATION
CHECK MOUTH PIECE
CHECK PRESS TO TALK SWITCH
NOISY EARPIECE
CHECK THE MIC (RESISTANCE 125 TO 200 OHMS)
LOW Tx VOICE
SPEAK CLOSER TO MIC
CHECK MIC
NO DIAL TONE
CHECK TELEPHONE LINE
CHECK AC MAINS, LED SHOULD GLOW
NO DIALING
CHECK THE CABLE FROM DIAL PAD TO PCB
CHECK EXCHANGE SHOULD SUPPORT TONE DIALING
HUMMING ON LINE/
ABNORMAL SOUND ON
PAGE MODE
CHECK TELEPHONE LINE
NO OPERATION OF
EXTERNAL RINGER
CHECK WIRE
CHECK FUSE ( USE 250 mA FUSE ONLY )
IF ANY OF THESE PROBLEMS PERSISTS THEN CHANGE THE MAIN PCB
Page 4
TECHNICAL SPECIFICATIONS CLEAN ROOM PHONE
MODEL CR-IIIAD
Electrical Performance:-
Ringer sensitivity
40 – 100 V AC@ 16 – 25 Hz.
Dialing method
DTMF
Dialing frequency-lower group
697, 770, 852, 941 Hz
-Higher group
1209, 1336, 1477 and 1633 Hz
Distortion
< 20 db
Frequency tolerance
(+ / -) 1.3%
DTMF transmitting level resistance
0.155Vrms @ 5K ohm Load
Ringer output
70 dB at 1 Mtr.
Speaker output
50 dB at 1 Mtr
Set impedance
600 OHMS nominal
Inbuilt Amplifier
3 Watts (RMS)
Electrical Requirement:-
Line voltage
24 -56 V DC.
Loop current
20 - 120 mA.
Fuse
0.25 Amp 2AG fast blows.
Environmental:-
Temperature
0 to +60c
Humidity
0 to 95% Rh non-condensing.
Enclosure
Dust proof.
Mechanical:-
Body construction
18 SWG steel, powder coated body
with FRONT SS DIAL plate.
Dimensions
230 x 230 x 60 mm.
Net weight
2.5 Kgs
Voizlink
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AMRAWATI ROAD, WADI,
NAGPUR –440023.MAHARASHTRA, INDIA.
Cell: - +9198226 95746, +919145610269, +919822941190.
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