Graco MP-25 Operation page 41

Pre-run setting and test
The following must be conducted by a supervisor or a qualified individual experienced in
electro-mechanical equipment.
Ensure that there are no persons close to the machine.
Ensure that there are no obstructions in or around the machine.
Turn the speed selection knob to speed 1.
1. Attach a suitable water feed – (see note) hose to the machine using the "Geka"
style hose tail supplied, and turn the water on at the spigot.
Note – the water feed must be able to support 4GPM @ 40 PSI or 7GPM @ 40PSI
MINIMUM.
2. Press the "water prime" button for a couple of seconds, to expel air from the
hosepipe and to allow some water into the mixing chamber of the machine. (The
lower plug can be removed and be used as a "level". Once water flow from the
lower port, the prime button should be released and the port plug replaced.
3. Press the START button and observe the machine to turn the drive shaft and in
turn the pump unit. PRESS THE STOP button,
4. Turn the direction switch from FWD to REV, and hold in position, as it is spring
returned, to prevent excessive reverse running.
5. Press the start button and observe the machine to turn the drive shaft and in turn
the pump unit, in reverse. PRESS THE STOP button within 5 seconds, or damage
will result to the pump unit.
Note It maybe necessary to try reverse prior to forwards as this often take less power than
forwards when initially breaking free a rotor unit.
6. The machine is now ready for use, by trained and qualified operators.
Page 41