Toro Multi Pro 1200 - Pressure Dampener

Multi Pro 1200/1250 Page 6 -- 11 Spray System
Pressure Dampener
Thepressuredampenerismountedtothe pressureline
atthespraypump(Fig.5)andisusedtosmoothsystem
pressure pulsation. Adjust air pressure on the pressure
dampenertoapproximately1/3ofthesprayingpressure
(e.g. if the spraying pressure is 45 PSI (3.1 bar), the
dampener pressure should be 15 PSI (1 bar)). If fluid is
presentwhenpressureinthedampenerischecked,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
andremovingspraysystemcomponents.Wearpro-
tective clothing, chemical resistant gloves, and eye
protection during repair.
1. Loosenandremovecapscrewsandnutsthatsecure
diaphragm between housings.
2. Remove diaphragm from dampener.
3. Replace diaphragm and reassemble dampener.
1. Spray pump
2. Pressure dampener
3. Pressure hose (1”)
Figure 5
2
1
3
1. Spray pump
2. O--ring
3. Hex nut (12 used)
4. Rear housing
5. Diaphragm
6. Front housing
7. Cap screw (12 used)
8. Air valve
Figure 6
4
1
5
7
8
2
3
6
Thread
Sealant
Thread
Sealant
RTV Silicone
Sealent
NOTE: ARROWS SHOW FLUID
FLOW DIRECTION
Spray
System