CLM Sirens
(Canadian Line Materials Limited. / CLM Industries)
CLM "Mailbox" Type 5263
CLM "Mailbox" Type 5263
This siren is a 220V 3-Phase 10/12 Port CLM Type 5263 "Mailbox" siren.
This siren is a 220V 3-Phase 10/12 Port CLM Type 5263 "Mailbox" siren.
Photo by Sirens & Thunderbolts 1003
CLM "Mailbox" Type 5223
CLM "Mailbox" Type 5223
This siren is a 220V 3-Phase 20/24 Port CLM Type 5223 "Mailbox" siren.
This siren is a 220V 3-Phase 20/24 Port CLM Type 5223 "Mailbox" siren.
This siren comes in two different voltages 550V and 220V.
This siren comes in two different voltages 550V and 220V.
These 20/24 port sirens have that many ports so it sounds close to a 3600 RPM 10/12 Port CLM while the motor is only running on 1500 RPM.
These 20/24 port sirens have that many ports so it sounds close to a 3600 RPM 10/12 Port CLM while the motor is only running on 1500 RPM.
Photo(s) by Sirens & Aviation and more
Rotating CLM Type 927xxDP
Rotating CLM Type 927xxDP
This siren is a Rotating CLM with 10/12 Port (The 12 port side is the most dominant tone heard due to the 10 Port stator on the back being blocked off to only 4 ports but the rotor is 10 port). This model siren came in two different model types.
This siren is a Rotating CLM with 10/12 Port (The 12 port side is the most dominant tone heard due to the 10 Port stator on the back being blocked off to only 4 ports but the rotor is 10 port). This model siren came in two different model types.
The models are: 92729DP and 92730DP both are 3-phase but come in two different voltages.
The models are: 92729DP and 92730DP both are 3-phase but come in two different voltages.
The Type 92729DP was set up for 550V and the Type 92730DP was set up for 220V.
The Type 92729DP was set up for 550V and the Type 92730DP was set up for 220V.
Photo(s) by Sirens & Thunderbolts 1003
CLM Type 5-WRS Air Raid Siren Controller
CLM Type 5-WRS Air Raid Siren Controller
Single-Phase Controller
Single-Phase Controller
This is a Canadian Line Materials (CLM) siren controller at the Arnprior Fire Department in Ontario. It is attached to a single-phase Type 5263. This controller's alert and all clear switches were removed and only the idle switch remains on the controller. The idle circuit spins the siren at 65-75 rpm depending on what the transformer taps are set to inside of the unit, this feature is used in the wintertime to run the siren quietly to keep the motor warm so it won't freeze. Near the bottom, there is an overload button in case the unit has an overload event. The ALERT and ALL CLEAR switches have been moved from the electrical room where the controller is mounted to the main area of the fire hall. The controller does not have any holding relays to keep the signal engaged because of that, it does not automatically cut off after a specific time like the early (1950s and later) Federal Sign & Signal AR/AF timers do. The switches keep the signal engaged and only turn off when someone turns the switch again.
This is a Canadian Line Materials (CLM) siren controller at the Arnprior Fire Department in Ontario. It is attached to a single-phase Type 5263. This controller's alert and all clear switches were removed and only the idle switch remains on the controller. The idle circuit spins the siren at 65-75 rpm depending on what the transformer taps are set to inside of the unit, this feature is used in the wintertime to run the siren quietly to keep the motor warm so it won't freeze. Near the bottom, there is an overload button in case the unit has an overload event. The ALERT and ALL CLEAR switches have been moved from the electrical room where the controller is mounted to the main area of the fire hall. The controller does not have any holding relays to keep the signal engaged because of that, it does not automatically cut off after a specific time like the early (1950s and later) Federal Sign & Signal AR/AF timers do. The switches keep the signal engaged and only turn off when someone turns the switch again.
Photo(s) by Random Things