Will the PMP Rapid Fire™ Pulser work with the older model Keytrol® mechanical consoles?
No, the PMP Rapid Fire™ Pulser PMP #48503 will not work with the older Keytrol® Model 250 mechanical consoles.
The reason is the PMP Rapid-Fire pulser was designed with a newer technology and a very narrow band width of 12ms. This narrow bandwidth will not activate the mechanical relays in older model consoles. These old model relays are often referred to as “Ice Cube” relays because they are clear plastic, about the size and shape of an ice cube.
How do I install a PMP Rapid-Fire® Pulser?
The Rapid-Fire Pulser is easy to install. Click on one of the links below for the installation instructions for your particular model:
- 48503 – 3-Position Switchable Rapid-Fire Pulser, UPPER Wheel Bank PMP Form No. 143
- 48504 – 2-Position Switchable Rapid-Fire Pulser, LOWER Wheel Bank PMP Form No. 144
- 48505 – 115 VAC - FR/W Rapid-Fire Pulser for Fill-Rite and Wayne meter-registers PMP Form No. 145
- 48506 – 12 VDC - FR/W Rapid-Fire Pulser for Fill-Rite and Wayne meter-registers PMP Form No. 148
Will the Rapid-Fire Pulser fit in pumps with two computers?
The Rapid-Fire Pulser easily fits in pumps with two computers. There is no need to remove the computers from the pump. The sensor is attached to the back tie bar of a VR-10 computer or a non-computer.
Click on the links for instructions:
Will I have to remove the computer to install the Rapid-Fire Pulser?
No. There is no need to remove the computer to install the Rapid-Fire Pulser. The sensor is easy to attach to the back tie-bar of a VR-10 computer by removing the two Torx screws that hold the tie bar. Then follow the instructions for your model:
How do I remove the Rapid-Fire sensor from a VR-10 computer or non-computer?
The Rapid-Fire sensor has an anti-backlash bearing to prevent false pulses due to computer wheel bounce. This creates a very positive engagement with the computer gear.
This positive connection can make it seem a little difficult to remove the sensor in the event it needs to be removed. With a little care it is quite easy.
- Remove the two Torx T20 screws holding the tie bar and sensor in place.
- Note how the tie bar fits over locating lugs that are cast into the side frames of the computer.
- Hold the tie bar at each end
- Move the left side of the tie bar toward you about ½” away from the computer.
- Gently rock the tie bar up and down as you pull slightly up and towards you.
- This rocking action will help release the connection between the sensor anti-backlash gear and computer gear.
- The sensor will disengage and the sensor and tie bar will be free from the computer.