Guardian Telecom DTR-51, Installation & Operation Manual

Page: 9 / 20

Installation and Operation
DTR-51 & DTR-61 Ringdown Telephones
Page 9
Retrofitting Strobe Light/ Ringer
•
Disconnect wiring at the demarcation block and power breaker to avoid shock
hazard.
See: Figure 5 -
Temporary Mounting
for Wiring
•
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.
•
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.
Strobe Light /Loud Ringer
• Remove the M20 alerter device wiring plug from the base and install an M20
cable gland.
See:
Figure 1 - Features
• Connect the Strobe Light or Loud Ringer wiring to the Ring Detect Relay
terminal block.
•
Enable the Ring Detect Relay by inserting the provided jumper wire across the
Ring Detect Relay Enable terminals.