Transfilling between SCBA's

WARNING! 

• Do NOT try to transfill SCBA with a 5500 psi operating system.
• Do NOT do transfilling between SCBAs if the donor's primary low-pressure warning device is in alarm or the HUD/control module lights are flashing red.

Failure to obey this warning can result in a shorter escape time to return to fresh air, causing serious personal injury or death.

 

Do transfilling between SCBAs ONLY during life-threatening emergencies or simulated training exercises.

The SCBA with the higher pressure reading is the donor. The SCBA with the lower pressure reading is the receiver. Both donor and receiver must return to fresh air immediately following the transfilling procedure.

If the donor's primary low-pressure warning device goes into alarm or the HUD/control module lights start to flash red during transfilling to indicate that pressure in the cylinder has been reduced to 35% of its rated working volume, the donor should disconnect and use the remaining service time to escape to fresh air.

If the donor's primary low-pressure warning device is not in alarm, the HUD/control module lights are not flashing, and there is sufficient air to transfill to a receiver (more than 2000 psi for 4500 psi SCBAs), do the following:
1. Remove the emergency transfill hose from its protective pouch.
2. Remove the rubber dust cap from both female fittings on the emergency transfill hose.
3. Remove the rubber dust cap from the male inlet fittings on the UAC fittings on both SCBAs.

4. Push the female fitting of the Quick-Fill hose onto the male fitting of the UAC until the hose clicks into position.
5. Pull on the emergency transfill hose to make sure the connections are secure.

When both female fittings are fully engaged with the UAC fittings, filling starts immediately.

After approximately 60 seconds, the pressure between the donor and receiver SCBA cylinders will be equal.

WARNING! 

If there is leakage from either female fitting or anywhere along the emergency transfill hose, disconnect the female fittings and return to fresh air immediately.

Failure to follow this warning can result in serious personal injury or death.

6. To disconnect the emergency transfill hose from the SCBA, pull the gray sleeve back on both ends.

The hose fittings and the UAC fittings will separate.

A hissing or popping sound may occur as the fittings separate and the high-pressure air is sealed off.
7. Immediately install the rubber dust cap on the UAC fitting to make a redundant seal and prevent dirt, water, and debris from going into the fitting.