40-500 Gas
July 27, 2018
3
(9)
The two brown wires returning from the micro switch (white on older models, pre 2011) go
to power the coil on the ratchet relay. The green wire on the ratchet relay coil goes to the
ground
(12)
. These two terminals are not polarity sensitive.
(8)
The micro switch on the grout cylinder (page 2) is a momentary contact, normally open,
switch that sends power to the coil from the brown wire on the ratchet relay when in contact
with the grout piston. This pulls the plunger
(14)
up inside of the coil and moves the white
plastic rocker
(16)
to one side or the other causing power to be sent to either the black wire
N.C. 2 terminal
(20)
or the red wire N.O. 3
(18)
terminal and out of electric box through 14-2
cable down to either coil attached to hydraulic solenoid valve
(32)
.
Please note that the ratchet relay coil plunger must fully extend back down with the help of the
spring on each cycle. If the plunger does not retract, one of the two micro switches on the grout
cylinder may be stuck in the on (or closed) position not allowing pump to reverse direction or
dirt-dust contamination will cause it to stick also. The box cover must be in place to prevent
electrical component damage.
(12)
Ground Lug
(9)
2 brown wires from grout cylinder
micro switch to ratchet relay coil
(14)
Ratchet relay
coil plunger
(16)
Plastic rocker
18
20
