HomeMy WebLinkAbout313.015 - Pump and RollEffective Date: December 2015 Section 313.015
Current Revision Date: 3/31/2022 ADA
Next Revision (1) Date: 3/31/2025 Page 1 of 4
300 Training and Equipment Manual
SECTION 313.015 PUMP AND ROLL
PURPOSE
To define standard operation procedures for Power-Take-Off (PTO) Pump-and-Roll
applications.
APPLICATION
PTO auxiliary (aux) pumps are designed for pump-and-roll operations only. If an aux
pump is used in a static pumping operation, catastrophic damage and injury may
occur. A thorough understanding of Fresno Fire Department (FFD or Department)
aux pump characteristics must be obtained prior to using any PTO auxiliary pump.
(See Training and Equipment Manual Section 303.012, PTO Auxiliary Pumps.)
OPERATIONAL POLICY
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OPERATIONAL GUIDELINE
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PROCESS
To prevent damage from overheating an auxiliary pump, the pump should not be
generating pressure for a prolonged period of time without flowing water through hose
lines. Prior to engaging the aux pump, the following steps should occur:
1. Staff one or two reel lines and confirm they are ready for water.
2. Open the Auxiliary Tank-to-Pump valve.
3. Open the Aux Pump Pressure Discharge valve, if equipped.
4. Ensure the Auxiliary Pump Cooler valve is open.
Fresno City Fire Department
Effective Date: December 2015 Section 313.015
Current Revision Date: 3/31/2022 ADA
Next Revision (1) Date: 3/31/2025 Page 2 of 4
Note: On Hi-Tech and newer apparatus, water cannot be circulated
back to the water tank through the Tank-Fill valve.
5. Confirm all deployed hose lines are secured and kept a safe distance
from all apparatus wheels and snags.
6. Engage the PTO switch in the cab.
7. Open the reel line discharge valve(s).
8. Place your foot on the brake.
9. Place the transmission in drive and release the parking brake.
10. Confirm the firefighters are ready to safely advance.
INFORMATION
Pump-And-Roll operations have some significant challenges:
Operations off road in low visibility are always high risk.
Producing high discharge pressures while keeping slow travel speeds
requires a braking while accelerating technique with many of the
Department’s apparatus.
Constantly assess the safety of the firefighters.
Constantly assess your dash gauges.
Always watch for soft ground.
Avoid depressions and high spots in the terrain.
When possible stay in the black.
o Keep moving; protect your tires against hot spots.
Effective Date: December 2015 Section 313.015
Current Revision Date: 3/31/2022 ADA
Next Revision (1) Date: 3/31/2025 Page 3 of 4
Low Visibility
Low visibility due to smoke creates some of the biggest hazards with pump-and-roll
operations. Often times, driver/operators rely on the observations of the firefighter(s)
in evaluating terrain conditions. A constant line of communication, audible or visual,
must be maintained at all times. When a firefighter operating a hand line needs to
communicate to the driver/operator and conventional means are ineffective, the
universal distress signal will be that the firefighter directs a stream of water at the
windshield of the apparatus. This technique is to be reviewed prior to beginning any
pump-and-roll operation.
Maintain Proper Discharge Pressure
Producing high discharge pressures may require higher than idle engine RPMs.
Higher RPMs may produce travel speeds too fast for pump-and-roll operation. A
technique used to keep speeds down while keeping discharge pressures up is to keep
slight pressure on the brake with one foot while keeping the other foot applying slight
pressure on the accelerator. Great caution must be exercised with this technique.
Use only enough accelerator to keep the engine RPM above an idle. The brake
system is not designed to overcome engine horsepower. If this technique is not done
carefully, damage will occur.
During longer operations, be aware of overheating your brakes. During fire attack
when lower pressures are sufficient, discontinue this technique, allowing brakes to
cool whenever possible.
Parking Brake and Transmission Interlocks During Aux Pump Operations
When the parking brake is set, the foot accelerator is disabled and the
hand throttle at the engineer’s panel is activated.
On Smeal and E-One apparatus, when the parking brake is released
and the transmission is in Drive, an interlock will disallow the
transmission to shift beyond first gear; it will not shift up to allow faster
travel speeds.
2010 Hi-Tech and 2015 Smeal apparatus are equipped with a centrifugal
clutch that drives the aux pump. If travel speeds exceed approximately
10 mph, the clutch releases the aux pump drive and it becomes
disengaged. Once the aux pump is disengaged, the transmission will
shift automatically into higher gears as travel speed increases. When
travel speeds reduce to approximately 5 mph and engine RPMs reduce
Effective Date: December 2015 Section 313.015
Current Revision Date: 3/31/2022 ADA
Next Revision (1) Date: 3/31/2025 Page 4 of 4
back to an idle, the aux pump will re-engage on its own, providing the
PTO switch remains activated.
Discontinuing PTO Operations
Upon setting the apparatus parking brake, always place the transmission in neutral
and disengage the PTO. Never leave the aux pump generating pressure for a
prolonged period of time without flowing water.
DEFINITIONS
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CROSS REFERENCES
Training and Equipment Manual
Section 303.012, PTO Auxiliary Pumps