SOLUTION (S)
Unscrew cap on bottom of spray pistol, push out brass spindle and replace the o-
rings and washer.
PROBLEM 4 “B”
The sprayer will not pressurize
– you pump but no pressure is built up – the unit
only sprays when you pump.
CAUSE (S)
The pump module (tube) has lost the air pressure head. All the air has escaped
from the top of the pump module due to improperly tightened siphon, nut, and
hose assembly. The washer that comes with the siphon, nut, and hose assembly
has deteriorated and is no longer sealing properly 2. Split or cracked pump
module.
SOLUTION (S)
Empty sprayer of spraying solution. Unscrew cap (nut) from the top of pump
module and remove. Turn sprayer up side down in order to empty pump module,
be careful not to lose the stainless steel ball inside pump module. Once pump
module is empty, put stainless steel ball back inside pump module and place
siphon tube back in pump module, tighten cap (nut) with wrench provided. Make
sure it is very tight. Unit should be ready to operate. 2. Tighten the nut at the top
of the pump module with the small wrench provided. 3. If cap is tightened,
replace washer in siphon nut hose assembly. 4. If pump module is cracked
replace with spare parts available on our website.
Click here for SPO breakdown:
http://mkrittenhouse.com/ca/backpack-sprayer-sp0-parts
http://mkrittenhouse.com/us/backpack-sprayer-sp0-parts
Click here for SP1 breakdown:
http://mkrittenhouse.com/ca/swissmex-backpack-sprayer-sp1-parts
http://mkrittenhouse.com/us/swissmex-backpack-sprayer-sp1-parts
PROBLEM
5 “A”
Your unit has been in use for some time. You pump the unit, however you can’t
build pressure, infect, if you stop pumping, very little liquid will come out.
CAUSE (S)
1.The O-rings and the check valve on the pump module have been attacked by
chemicals and are no longer sealing. There are two o-rings, one large, one small
and one check valve.
2. The pressure chamber has expanded due to pressure and/or chemical attack.
SOLUTION (S)
1. Change the O-rings and seals from the pump module Kit 12. If these seals
have deteriorated you should change all rubber seals in the unit. If the above
