MAC/MTT-OPS-1
26 FEB 2019
SECTION 4
Normal Operations
4-7
7. Ensure water pump and suction hoses are full
of water before operating pump.
Do not operate the water pump in a dry sump.
Dry operation will result in shaft seal damage.
8. Ensure foot valve remains submerged in water.
9. Start chassis engine.
10. At LOW IDLE turn SYSTEM/POWER switch ON.
11. (DiSCS® Only) AUX2 - ON
12. Turn PUMP Switch – ON
Do not engage/disengage the water pump
above LOW IDLE. Engaging/disengaging the
water pump above low idle will result in water
pump component damage and reduced
service life.
13. Increase engine RPM to HIGH IDLE.
When unit is full of water
14. Reduce engine RPM to LOW IDLE.
15. PUMP Switch – OFF
Do not engage/disengage the water pump
above LOW IDLE. Engaging/disengaging the
water pump above low idle will result in water
pump component damage and reduced
service life.
16. AUX2 - OFF
17. SYSTEM/POWER Switch OFF.
18. Turn engine OFF.
19. Disconnect, drain and stow suction hoses.
AFTER OPERATIONS
These procedures are used to perform a walk-
around inspection after using the MEGA water
tanker systems. This inspection is in addition to
and does not replace the vehicle manufacturer’s
inspection requirements.
1. Vehicle parking brake – ON
2. Cab Control Switches – SET OFF
3. Chocks – As Required
4. Water Cannon – CHECKED & SECURED
5. Vehicle Hydraulic Tank - CHECKED
6. Tank Lines and Hoses – SECURED
7. Tank Drain Petcocks – As Required.
8. Spray Heads – SECURED & SET
9. Water Pump – CHECKED
a. Water Pump – Check for damage and volute
case drain valve set as required.
10. Hose Reel – CHECKED
11. Solenoid Control Box – CHECKED
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