Guardian Telecom ZONE 1 DTR-51-Z User manual

Ph: 403.258.3100 \ email:[email protected] \ www.guardiantelecom.com
Desktop Ringdown Telephones
DTR-51-Z & DTR-61-Z
“ZONE 1”
Installation & Operation Manual
P006813 Rev. G 160418 4/18/2016 10:12 AM

Guardian Telecom Inc. Installation and Operation
Desktop Ringdown Telephones DTR-51-Z & DTR-61-Z
Page 2
Table of Contents
Package Contents ...............................................................................2
Models.................................................................................................2
Accessories.........................................................................................2
Overview .............................................................................................3
Features ..............................................................................................3
Installation ...........................................................................................6
Wiring ..................................................................................................7
Retrofitting Supplemental Receiver, Strobe Light/Ringer .....................8
Field Repairs & Adjustments................................................................9
Operating the DTR-Z.........................................................................10
Cleaning Tips for Guardian Telephones.............................................10
Product Specifications .......................................................................11
Replacement Parts............................................................................12
EC Declaration of Conformity.............................................................13
Warranty............................................................................................15
Disclaimer..........................................................................................15
Warning.............................................................................................15
Service Telephone Number...............................................................15
Feedback...........................................................................................15
Guardian Product Return...................................................................16
Table of Figures
Figure 1 - Features..............................................................................4
Figure 2 - Overall Dimensions..............................................................4
Figure 3 - Wall Installation of Base ......................................................5
Figure 4 - Wiring..................................................................................5
Figure 5 - Example of Label.................................................................5
Figure 6 - Temporary Mounting for Wiring............................................7
Package Contents
(1) DTR-Z Hazardous Area Desk Top Telephone
(1) Installation & Operation Manual
(1) Parts bag containing handset clips & screws, 3mm Allen key for faceplate screws &
one Ring Detect Relay Enable jumper wire.
Models
P3022
DTR-51-Z - Volume Control on Handset and Curly Cord
P3023
DTR-61-Z - Volume Control on Handset and Armored Cord
Accessories
P3024
Zone 1 Supplemental Receiver Kit

Guardian Telecom Inc. Installation and Operation
Desktop Ringdown Telephones DTR-51-Z & DTR-61-Z
Page 3
Overview
Desk Top Ringdown Telephones ZONE 1
DTR-51-Z and DTR-61-Z referred to as “ZONE 1” Desk Top ringdown telephones provide safe,
reliable communications in hazardous areas that are prone to high humidity, chemical vapors, dust
and physical abuse. Hands Free operation is standard on all models. A Supplemental receiver option
is available that can be held against the ear opposite to the handset, in order to improve speech
recognition in noisy environments.
Features
Housing and Handset
•high impact thermoset – static dissipative
Mounting
•
desk top or wall mounted
Audio Mode
•
handset
Surge Arrestor
•protects the user in the event of a high voltage spike on the telephone
line
Resettable Fuse
•prevents damage to the electronic circuits in the event of a high
voltage spike on the telephone line
Magnetic Reed Hook Switch
•no moving parts
Built In Ring Detect Relay
•250VAC 5 Ampere Ring Detect Relay, (no need for an external RDR)
Handset Cord
•6’ heavy duty curly cord on DTR-51-Z
•armored cord on DTR-61-Z
Hearing-Aid Compatible (HAC) Receiver
•compatible with inductively coupled hearing-aid devices
Receiver Volume Control
•
Switch in handset provides 15dB of audio range
Wide Temperature Range
•
-30º C to +60º C (-22º F to +140º F) Refer to Specifications

Guardian Telecom Inc. Installation and Operation
Desktop Ringdown Telephones DTR-51-Z & DTR-61-Z
Page 4
Figure 1 - Features
Figure 2 - Overall Dimensions
ENTRY GLAND(DESK MOUNT) *
ALERTER DEVICE WIRING PLUG *
HEADSET/AUXILIARY RECEIVER WIRING PLUG
GLASS REINFORCED POLYESTER FACEPLATE
MAGNETIC REED HOOK SWITCH
CURLY CORD FOR DTR-51-Z
ARMORED CORD FOR DTR-61-Z
* BASE IS ROTATED 180° FOR WALL MOUNT
M20 ENTRY GLAND(DESK MOUNT) *
M20 ALERTER DEVICE WIRING PLUG *
GLASS REINFORCED POLYESTER FACEPLATE
MAGNETIC REED HOOK SWITCH
CURLY CORD FOR DTR-51-Z
ARMORED CORD FOR DTR-61-Z
* BASE IS ROTATED 180° FOR WALL MOUNT

Guardian Telecom Inc. Installation and Operation
Desktop Ringdown Telephones DTR-51-Z & DTR-61-Z
Page 5
Figure 3 - Wall Installation of Base
Figure 4 - Wiring
Note the above heading will be DTR-51-Z for P3022 and DTR-61-Z for P3023
Figure 5 - Example of Label

Guardian Telecom Inc. Installation and Operation
Desktop Ringdown Telephones DTR-51-Z & DTR-61-Z
Page 6
Installation
•The DTR ZONE 1 ringdown telephone utilizes the features of the PABX to route
calls to the desired location.
•Follow all appropriate electrical codes and use only approved electrical fittings for
the installation.
•If required install primary surge protection outside of the classified area.
•
Ensure that none of the electrical connection circuits are live by disconnecting the
Tip and Ring conductors at the demarcation block or PABX.
•If the built in Ring Detect Relay is to be utilized to activate an external alarm
ensure that the power conductors are not live.
•Using the 3mm Allen Key provided loosen the four faceplate captive screws to
detach the faceplate from the base.
•The telephone may be installed on a flat surface or wall mounted.
Desk Top Configuration
• If the telephone is to be desk top mounted set the base in the desired location.
Wall Mount Configuration
•If the telephone is to be wall mounted choose a location that is free of
obstructions and permits space for wiring. Mount the base with the deepest
dimension on the bottom. Mount as follows:
See: Figure 2 - Overall
Dimensions.
o
The telephone weighs 3.95 kilograms (8.68 pounds), ensure that the
mounting can support four times the weight of the unit; that is 15.8
kilograms (34.8 pounds).Wall anchors are not included; follow the
manufacturer’s instructions when installing anchors.
o
Mounting to concrete or cinder block. Lead expansion anchors with M4
(#8) screws are recommended.
oMounting to drywall. Hollow wall anchors (Molly Bolts) with M4 (#8)
screws are recommended.
oMounting to other surfaces. It is the responsibility of the installer to
ensure that the base is attached in such a way as to support the weight
specified above.
•Install the handset retainer clips on the faceplate using the hardware supplied.
Special Conditions for Safe Use (Gas & Dust)
(1) The enclosure must be opened in a non-hazardous location in order to make
the necessary connections. The connecting cable must be suitable for use in the
EX environment (see IEC60079-14 & IEC61241-14) and be secured using the
cable gland provided.
(2) The volt free contacts for the ring detect circuit must only be connected to
external equipment suitably rated for its end-use EX environment (see
IEC60079-14 & IEC61241-14) and be secured using the cable gland provided.
(3) During installation, it must be ensured that external wiring to connectors J1
and J2 must be sheathed to within 10mm of the terminals. External wiring shall
be rated for a minimum of 250V and run so that 50mm separation is maintained
between wiring and terminals/connectors other than J1 and J2.

Guardian Telecom Inc. Installation and Operation
Desktop Ringdown Telephones DTR-51-Z & DTR-61-Z
Page 7
Wiring
•WARNING: Use properly sized cable to ensure a gas/dust tight seal at
the cable gland, (M12 – 2 to 5mm), (M20 – 8 to 13mm). Take care not to
lose parts of the gland if the cap is removed.
Tip: If cable diameter is
not in the range of the
M12 or M20 glands
provided an approved
reducer and smaller
gland can be fitted.
See: Figure 6 -
Temporary Mounting for
Wiring
See: Figure 4 - Wiring
•If the telephone is wall mounted temporarily hang the faceplate on the right
side of the base using two of the faceplate screws. Be careful not to lose the
"O" ring retainers.
•Insert the Tip and Ring cable through the M20 gland and connect the
conductors to the Phone-Line-In terminal block.
•If an extension telephone is installed the phone line out terminals may be
utilized. A four conductor cable can be used, or an additional cable can be
run through the spare 20mm opening; if it is not occupied for other
purposes.
•Install the Supplemental receiver if provided. Tip: Refer to the
documentation provided
with this accessory.
See:
Figure 1 - Features &
Figure 4 - Wiring
•If an external alerter device is utilized remove the M20 plug, install an
appropriate cable gland and connect the wiring to the Ring Detect Relay
terminal block. Enable the Ring Detect Relay by inserting the jumper wire
provided across the Ring Detect Relay Enable terminals.
•Tighten the cable glands securely.
•
Mount the face plate and secure the captive screws to the base.
Tip: Torque screws to
1.65 ft/lbs (1.36Nm)
•Connect the Tip and Ring conductors at the demarcation block.
•If the built in Ring Detect Relay is utilized apply power to the conductors.
Programming
•Program the PABX if necessary.
Testing
•Test the unit by calling to and from another unit on the exchange.
Figure 6 - Temporary Mounting for Wiring

Guardian Telecom Inc. Installation and Operation
Desktop Ringdown Telephones DTR-51-Z & DTR-61-Z
Page 8
Retrofitting Supplemental Receiver, Strobe Light/Ringer
•Disconnect telephone wiring at the demarcation block and ring detect relay
power at the breaker to avoid shock and explosion hazard.
See: Figure 6 -
Temporary Mounting for
Wiring
•Loosen the four captive screws in the faceplate and detach the face plate
from the base.
•If the telephone is wall mounted temporarily hang the faceplate to the right
side of the base using two of the faceplate screws. Be careful not to lose
the "O" ring retainers.
•Install the options following the instructions below.
•Tighten cable glands securely.
•Carefully replace the front plate and install all four screws. Tip: Torque screws to
1.65 ft/lbs (1.36Nm).
•Reconnect telephone and ring detect relay wiring.
•Test the unit by calling to and from another unit on the exchange.
Supplemental Receiver
Note: Supplemental
Receiver part no.
P3024 required.
•If wall mounted install the Supplemental Receiver hanger to the wall 4" to
6" to the right of the telephone.
•Remove the plug on the side of the face plate and install the M12
accessory cord gland.
See:
Figure 1 - Features
•Insert the Supplemental Receiver cord through the gland into the face
plate and tighten the gland.
•Connect the wiring to the headset earpiece terminal block. See: Figure 4 - Wiring
Strobe Light /Loud Ringer
•Remove the alerter device M20 wiring plug from the base and install an
approved cable gland.
See:
Figure 1 - Features
•Insert the cord through the gland into the face plate and tighten the gland.
•Connect the Strobe Light or Loud Ringer wiring to the Ring Detect Relay
terminal block. See: Figure 4 - Wiring
•Enable the Ring Detect Relay by inserting the provided jumper wire across
the Ring Detect Relay Enable terminals.

Guardian Telecom Inc. Installation and Operation
Desktop Ringdown Telephones DTR-51-Z & DTR-61-Z
Page 9
Field Repairs & Adjustments
Field repairs may only be carried out by qualified technicians using OEM parts.
Substitution of parts voids warranty and may pose a hazard to users of the
equipment.
See: Replacement
Parts
•Disconnect telephone wiring at the demarcation block and ring detect relay
power at the breaker to avoid shock and explosion hazard.
•Loosen the four captive screws in the faceplate and detach the faceplate
from the base.
•If the telephone is wall mounted temporarily hang the faceplate to the right
side of the base using two of the faceplate screws. Be careful not to lose
the "O" ring retainers.
See: Figure 6 -
Temporary Mounting for
Wiring
•Perform the necessary repairs or adjustments.
•Carefully replace the front plate and install all four screws. Tip: Torque screws to
1.65 ft/lbs (1.36Nm)
•Reconnect the Tip and Ring conductors at the demarcation block.
•Apply power to Strobe Light/Loud Ringer conductors.
Handset Replacement
•Disconnect the handset wiring from the terminal block. See: Figure 4 - Wiring
•If the phone is equipped with an armored cord handset, remove the
anchor screw from the armored cord lanyard.
•Loosen the handset cable gland and pull out the cord.
•Install the new replacement and tighten the gland.
•Rewire the replacement cord to the terminal block.
Supplemental Receiver Replacement
•Disconnect the supplemental receiver wiring from the terminal block. See: Figure 4 - Wiring
•Loosen the cable gland and pull out the cord.
•Install the new replacement and tighten the gland.
•Rewire the replacement cord to the terminal block.
Ringer Speaker Replacement
•Unplug the speaker connector from the main board.
•Remove the screws that hold the speaker cap to get access to the
speaker.
•Install the new speaker and gasket.
•Reconnect the speaker connector to the main board.
Main Circuit Board Replacement
•Label any wiring attached to the circuit board. Disconnect wiring and
ribbon cable.
•Remove the six screws holding the circuit board in place. Carefully
remove the board.
Tip: Torque screws to
2.5 in/lbs (0.28 Nm).
•Install the new board and replace the six screws and wiring.

Guardian Telecom Inc. Installation and Operation
Desktop Ringdown Telephones DTR-51-Z & DTR-61-Z
Page 10
Fuses
•There are no replaceable fuses in the DTR-Z.
•The phone line fuse on the circuit board of all models is of the resettable
type and is not replaceable. If the fuse trips due to an external event it will
reset in a short period of time. The duration will depend on ambient
temperature and other factors. If the fuse trips repeatedly check the
telephone system wiring. The fuse protects the Tip and Ring line from the
telephone system. It is usually powered at 48 volts DC and must not be
connected to 120VAC or 230VAC.
•The Ring Detect Relay fuse is a 5 Ampere, fast blow fuse. It is potted to
prevent an exposed spark. If the fuse blows the circuit board must be
replaced.
Operating the DTR-Z
Lift the handset and the telephone will dial automatically. Adjust the handset
volume to a comfortable level with the volume control switches on the handset.
When the call is completed replace the handset in the cradle.
Cleaning Tips for Guardian Telephones
Guardian Telephones may occasionally need to be cleaned to maintain appearance. Generally,
wiping the surface with a clean, water dampened cloth will remove most films or residues. If the
soiling is too stubborn for plain water, a mild detergent solution may be used. Be sure to wipe
away any detergent residue with a plain water dampened cloth. The Telephone may be
cleaned with any general-purpose household glass and surface type cleaner. Do not spray the
telephone directly! Spray the cleaner on a soft cloth then wipe the surface. Pre-treated cloths,
like those used for eyeglasses or cameras, may be used to clean the Telephone. Premoistened
towelettes may also be used, however, avoid those containing lanolin or aloe as they will leave
a slippery residue. The handset and surface of the telephone may be cleaned with disinfectants
used for general cleaning in a medical environment. Isopropyl alcohol may be used applied with
a cloth. Avoid using alcohol on silicon based keypads, since doing so may significantly degrade
legibility.
•Do not use furniture polishes, waxes or plasticizer-based cleaner (Armor All etc.)
•Do not use lanolin, aloe, glycerin or other skin care type products.
•Do not apply any solvent such as acetone, mineral spirits etc.
•Do not directly spray or immerse the handset.

Guardian Telecom Inc. Installation and Operation
Desktop Ringdown Telephones DTR-51-Z & DTR-61-Z
Page 11
Product Specifications
PERFORMANCE
AUDIBLE RANGE FREQUENCY RESPONSE
300 –3400 HZ
R
ECEIVER
V
OLUME
A
DJUSTMENT
8
S
TEPS
,
2 dB/S
TEP
CONFORMS TORESIDENTIAL AND INDUSTRIAL AREAS
ETSI TBR 38: MAY 1998 (ACOUSTICS)
ETSI TBR 21: JANUARY 1998 (TELEPHONE NETWORK)
R
INGER
O
UTPUT
>85
dB
@
1M
RINGER IMPEDANCE WITHOUT RING DETECT RELAY >7K OHMS @25 HZ,30-90 VAC
>4K OHMS @50HZ,30-90 VAC
R
INGER
I
MPEDANCE
W
ITH
R
ING
D
ETECT
R
ELAY
>4K
O
HMS
@25
H
Z
,
30-90
VAC
(RDR
N
OT
R
ECOMMENDED
@
50H
Z
)
SET IMPEDANCE
600 OHMS NOMINAL
M
AXIMUM
L
OOP
15,000
F
T
(4,600
M
)
OF
22
AWG
C
OPPER
ELECTRICAL
R
INGER
S
ENSITIVITY
40
–
100
V,
16
–
25
H
Z
LINE VOLTAGE
24 –56 VDC
L
OOP
C
URRENT
22
-
100
mA
CONNECTION METHOD
TERMINAL BLOCKS
F
USE
-
M
AIN
T
ELEPHONE
CCT
250
mA
–
A
UTO
R
ESET
FUSE –RING DETECT RELAY
5AMP 250 VOLT FAST BLOW
ENVIRONMENTAL
INGRESS PROTECTION RATING
IP66
O
PERATING
T
EMPERATURE
-30
O TO
+60
O
C
(-22
O TO
+140
O
F)
STORAGE TEMPERATURE
-50
O
TO +80
O
C(-58
O
TO +176
O
F)
H
UMIDITY
0
TO
95%
RH
DUSTPROOF
FULLY GASKETTED ENCLOSURE
MECHANICAL
HOOK SWITCH (CRADLE SWITCH)LIFE
>1 000 000 OPERATIONS
H
OUSING
M
ATERIAL
G
LASS
F
ILLED
P
OLYESTER
(C
ARBON
L
OADED
)
HANDSET MATERIAL
GLASS FILLED POLYESTER (CARBON LOADED)
D
IMENSIONS
(H
X
W
X
D)
W
ALL
M
OUNTED
281
X
246
X
158
MM
(11.1
X
9.7
X
6.2
INCHES
)
NET WEIGHT
3.95 KG (8.68 LBS)
M
OUNTING WALL STRENGTH
R
EQUIREMENT
15.8
KG
(34.8)
LBS
MICROPHONE
NOISE CANCELING
R
ECEIVER
H
EARING
A
ID
C
OMPATIBLE
(HAC)
MOUNTING
DESK OR WALL
W
IRING
A
CCESS
2
X
M20
C
ABLE
G
LAND
E
NTRY
P
OINTS

Guardian Telecom Inc. Installation and Operation
Desktop Ringdown Telephones DTR-51-Z & DTR-61-Z
Page 12
COMPLIANCE
0518
N
OTIFIED
B
ODY
SIRA CERTIFICATION SERVICES
CERTIFICATE NUMBER TRAC09ATEX21205X
DECLARATION OF COMPLIANCE BY GUARDIAN TELECOM AVAILABLE
D
ECLARATION OF
C
ONFORMITY ON
F
OLLOWING
S
HEET
ATEX coding
II 2G Ex e ib mb IIC T5 Gb
II 2D Ex ib mb tb IIIC T100°C Db
-30°C < Ta < +60°C
II 2G Ex e ib mb IIC T6 Gb
II 2D Ex ib mb tb IIIC T85°C Db
-30°C < Ta < +45°C
Replacement Parts
Part No.
Description
P006608
Handset, coil cord
P006921
Handset, armored cord
P007198 PCBA, DTT/DTR Main circuit board
P006690
M20 Gland, ATEX compliant
P006668
M20 Plug, ATEX compliant
P006679
M12 Gland, ATEX compliant
P006862
M12 Plug, ATEX compliant
P006692
M4 Faceplate screws (4 required)
P006696
0-Ring gaskets for faceplate screws (4 required)
P006675
Faceplate gasket
P002254
Magnetic reed hook switch
P004123
Nylon fastener for hook switch
P007197 Telephone housing base
P007180
Telephone faceplate
P006656
Receiver cartridge
P007013
Microphone cartridge
P006819
Ringer Speaker
P006614
Handset retainer
P006617
Allen key for faceplate screws

Guardian Telecom Inc. Installation and Operation
Desktop Ringdown Telephones DTR-51-Z & DTR-61-Z
Page 13
EC Declaration of Conformity

Guardian Telecom Inc. Installation and Operation
Desktop Ringdown Telephones DTR-51-Z & DTR-61-Z
Page 14

Guardian Telecom Inc. Installation and Operation
Desktop Ringdown Telephones DTR-51-Z & DTR-61-Z
Page 15
Warranty
Guardian Telecom warrants your product to be free of defects in material and workmanship for a period
of one year. Guardian Telecom will repair or replace any defective unit that is under warranty free of
charge.
This warranty is null and void if any non-authorized modifications have been made to this product, or if
it has been subjected to misuse, neglect, or accident. This warranty covers bench repairs only; such
repairs must be made at Guardian Telecom or an authorized service depot. Guardian Telecom is not
responsible for costs incurred for on-site service calls, freight, or brokerage.
A return authorization must be obtained prior to warranty claims or repairs.
Disclaimer
The products covered by this manual are designed for use in Industrial Environments and/or Hazardous
Locations. Due to the range of possible applications for these instruments the manufacturer will not be
responsible for damages or losses of any kind suffered as a result of the use of this product, including
consequential damages.
Warning
This device may be opened and reassembled by qualified personnel only, for the purposes of installing
the product, making adjustments and replacing components, following the instructions in the product
manual. Before opening this telephone disconnect the wiring at the demarcation block.
High voltages may be present in this product when connected to telephone wiring.
Service Telephone Number
1-800-363-8010
Guardian Telecom provides a customer service telephone number which is toll-free within North
America. If you need assistance when installing or operating this product, please call the toll-free
telephone number between regular business hours (8:00AM-5:00PM), Mountain Standard Time. If you
are calling outside of regular business hours, please leave a detailed message, and a member of
Guardian Telecom’s Service Department will return your call as soon as possible. If your product
requires service, Guardian personnel will supply you with an RMA (return materials authorization)
number over the telephone or through our web site product return page. This number must be included
with your return address and the name of the person to contact.
Guardian Telecom Inc.
Toll-free 1-800-363-8010
Ph. [phone]
Fax. [phone]
www.guardiantelecom.com
Feedback
Guardian Telecom continually strives to make reliable, durable, and easy to use products. If you, as an
installer or user of our equipment, have any suggestions for improvements to this or any of our products
or documents, including this manual, we would appreciate hearing from you.

Guardian Telecom Inc. Installation and Operation
Desktop Ringdown Telephones DTR-51-Z & DTR-61-Z
Page 16
Guardian Product Return
Guardian products have been quality tested and are in full working order when shipped from
the factory, given the rugged nature of these products shipping is not expected to damage a
unit. In the unlikely event of a malfunction Guardian follows the three step procedure below.
Step I - On-Site Correction
•The most common source of difficulties with a new product is improper installation in one of
two ways: incorrect wiring connections or connection to an incorrect power source.
•Product wiring needs to be properly connected to the on-site wiring. Correct wiring
instructions are shown in the user manual included with the product.
•Connecting a telephone to a standard power source, rather than tip & ring, will trip the
telephone’s internal resettable fuse. In the event that the fuse trips, disconnect the
telephone from the power source and reconnect following the wiring diagrams provided
with the product.
Step II - Return Materials Authorization (RMA)
•When a product has been installed following user manual instructions, and the unit fails to
operate, the user must contact Guardian Telecom to obtain authorization to return the
product. This can be done by completing a RMA form online at
www.guardiantelecom.com, or by calling the service telephone number given in this
manual.
•After providing information on the product, the owner and the nature of the problem,
Guardian will issue a RMA number, to be shown on documentation returned with the
product.
•In addition to the RMA number, shipping documents should include name, address and
telephone number of the owner along with contact information for the person responsible
for the repair and/or the user who identified the malfunction.
•(Where a product is being returned for repair from outside of Canada, customs
documentation must show the product’s serial number, date of export [date of purchase],
and a notation that the equipment is: “Canadian goods returning.”)
Step III - Factory Authorized Service
•Once received, each product is carefully inspected and tested. If the product is under
warranty, repairs are completed and the product returned to the owner, generally within
five working days of receipt by the factory.
•A product that has been subjected to misuse, neglect or accident or is beyond the warranty
period will be evaluated. The service department will provide the owner’s representative
with a repair cost estimate. Once approved, repairs are completed and the product
returned, generally within five working days.

Guardian Telecom Inc. Installation and Operation
Desktop Ringdown Telephones DTR-51-Z & DTR-61-Z
Page 17
Notes:
Model No.
Part No.
Serial No.
Date of Purchase

THIS PAGE INTENTIONALLY LEFT BLANK

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Guardian Telecom Inc.
Toll-free 1-800-363-8010
Phone [phone]
Fax. [phone]
www.guardiantelecom.com
E-mail: [e-mail]
(CTRL + Click to open message box)
CONNECTED. PROTECTED.
© Guardian Telecom Inc. 2016