Pump Operations Guide

1. Startup & Engagement

Turn On Sequence:
Battery (Wait)
Button (Wait)
Start

Transmission:
Drive Shaft: 3 on Engine
(2 = Driving, 1 = Pump)

Pump Shift:
Shift x2 → Select D (Drive)

2. Water Supply (Keystone)

1 Cover off
2 Handle out
3 Air release (crack open)
4 Pull "Fill Tank" lever
5 Primer fire pump
(look under truck for water)

                    5" Supply Line Ops:

                    Throw towards hydrant → Make loops → Go Wide. 

                    Hydrant Pressure:

                    70 PSI = OK 

                    90 PSI = Good

3. Pump Control & Safety

Cab Check: PAR Tag → Rt/Left/Down → Close Door → PAR Tag

Control Mode (Idle):

Dial to 150 PSI (w/ throttle)
Open "2" to keep system cool
Shut tank fill when full
Tip: Mark PSI gauge with crayon

Specs:
Limit: 1500 GPM
Tank: 500 Gallons

4. Hose Lengths

Location	Length
Bumper	150 ft
Crosslays (1,2,3)	200 ft (ea)
Pre-connect	300 ft
Attack Pack	200 ft total
5" Supply	850 ft (+50 shorty)

5. Nozzle Pressures (PSI)

Standard Flow: 150 GPM

Line	SM 20 (15/16)	Chief XD (7/8)
Bumper	110	95
Crosslay	120	110
300 ft	130	130

6. Rules of Thumb

                    Conservation:

                    Can flow 10 PSI under to conserve water.

                    Elevation:

                    Going Up: +5 PSI per floor

                    Basement: -5 PSI

⚠️ Troubleshooting

🔊 Problem: "Rocks in the Pump"

This is Cavitation. You are trying to pump more water out than is coming in. The water is literally boiling inside the pump.

Action: Throttle Down immediately.

🔥 Problem: Pump Overheating

You are "Dead Heading" (pumping with nozzles closed). Friction is heating the water.

Action: Open Recirculate / Tank Fill.

🧮 The "Why" Behind the Math

Friction Loss (FL):
Water rubbing against the inside of the hose slows it down. Smaller hose = More friction. This is why we have to pump higher than the nozzle rating.

Elevation Pressure (EP):
Water is heavy (8.34 lbs/gal). Lifting it fights gravity.

Going Up? Add 5 PSI per floor (Gravity fights you).
Going Down? Subtract 5 PSI (Gravity helps you).

📚 Critical Definitions

Water Hammer:
Closing a nozzle or valve too fast. The moving water slams into the valve like a physical hammer. Can explode hoses or damage the pump. Always close slowly.
Drafting:
Pulling water from a static source (lake, pool) using a hard suction hose, instead of getting pressure from a hydrant.
Changeover Valve:
The pump has two "gears": Pressure (Series) vs Volume (Parallel). Usually kept in Volume mode unless pumping high-rises.