Pressure Dampener - Toro Multi Pro 1200 Service Manual

Pressure Dampener

The pressure dampener is mounted to the pressure line
at the spray pump (Fig. 5) and is used to smooth system
pressure pulsation. Adjust air pressure on the pressure
dampener to approximately 1/3 of the spraying pressure
(e.g. if the spraying pressure is 45 PSI (3.1 bar), the
dampener pressure should be 15 PSI (1 bar)). If fluid is
present when pressure in the dampener is checked, the
diaphragm in the pressure dampener is damaged and
should be replaced.
Dampener Service (Fig. 6)
IMPORTANT: Make sure to neutralize and remove
chemicals from pump and hoses before loosening
and removing spray system components. Wear pro-
tective clothing, chemical resistant gloves, and eye
protection during repair.
1. Loosen and remove cap screws and nuts that secure
diaphragm between housings.
2. Remove diaphragm from dampener.
3. Replace diaphragm and reassemble dampener.
Multi Pro 1200/1250
3
1. Spray pump
2. Pressure dampener
6
7
8
NOTE: ARROWS SHOW FLUID
FLOW DIRECTION
1. Spray pump
2. O- -ring
3. Hex nut (12 used)
4. Rear housing
Page 6 - - 11
2
1
Figure 5
3. Pressure hose (1")
RTV Silicone
Thread
Sealent
Sealant
3
2
4
5
Thread
Sealant
Figure 6
5. Diaphragm
6. Front housing
7. Cap screw (12 used)
8. Air valve
Spray System
1