Rain RN 150 User manual

Electric Valve
Users manual
2 years warranty
RN 150

• Pressure: min 1.0 bar - max 12.0 bar
• Temperature: +4° C - 70° C
• Flow rate: from 20 l/min to 50 l/min
• PA 6 30% berglass
• Single-piece diaphragm for reliable
• leak-free valve closing
• Self cleaning stainless-steel metering pin
• Stainless-steel diaphragm di󰀨erential
• spring for smooth closing
• PN12 tested piece by piece at 14 bar
• Bleed handle for manual opening with
• internal bleed
• Type 1, Operating control
• Independently mounted control
• Ratings: 24Vac, 200mA, 4.8VA
• Maximum water temperature: 25°C
• Suitable for Non-drinking water
• Intended to be Hand tightened
Operating conditions

Operating principle
Closed valve
Series Rn 150 Plus solenoid valves work
thanks to the di󰀨erential forces acting on the
internal diaphragm.
In fact, when the solenoid valve is statically
closed, the water pressure is the same in the
lower body as in the upper body.
However, if this force acts on surfaces of
di󰀨erent dimensions, the imbalance of forces
necessary for the solenoid valve to remain
closed is created.
As can be seen from the drawing, the surface
of the diaphragm (upper body), where the
water exerts its thrust, is larger than that of
the shutter, and therefore the latter is pushed
by the unbalanced force.
and therefore the latter is pushed by the
unbalanced forces to close the mouth of the
solenoid valve.
Open valve
The solenoid valve is opened by draining the
water in the upper body. This is because,
thanks to the lifting of the mobile core, a drain
with a larger
section larger than the water supply hole to
the upper body: in a short time, the upper
body will be almost empty and the
In a short time the upper body will therefore
be almost empty and the pressure of the
water on the shutter will lift it and allow the
passage of the water.

Solenoid
Mobile Nucleus
Manual opening
Flow control
Adapter
Upper Body
Spring
Diaphragm
Ring
Lower body
ON
OFF
Exploded view

Dimensions
92,00 92,00
141,00
140,00
165,00
114,00
710,00
33,00
116,00
114,00
46,00
710,00
114,00
46,00
710,00
114,00
710,00
26,00
115,00114,00
114,00128,00
42,00
710,00
710,00
42,00

Solenoid valve does not
open
The solenoid valve opens
manually
Check that the rain sen-
sor is correctly connected
Solenoid valve does not
open manually
Check that the communi-
cation hole with the upper
body is not clogged
Check that the communi-
cation hole with the upper
body is not clogged
Check that the voltage
at the solenoid is at least
22 Vac.
Check that the voltage
at the solenoid is at least
22 Vac.
Check that the pump
does not start before the
solenoid valve opens.
Troubleshooting

Droplet/Droplet
Check that the solenoid
is properly screwed in.
Check that the static
pressure is below 0.7 bar
Check that the movable
core seat is clean
Check that the movable
core seat is clean
Check that the plug and
lower body mouth are
free of sand
Troubleshooting

Does not close
The internal manual
opening is closed
The system pressure
upstream of the solenoid
valves is greater than
0.7 bar
The mobile core slides
freely
The bore of the
diaphragm unit is free
The lower body of the
solenoid valve has no
stones or sand inside.
Troubleshooting

Warranty and Declarations
RAIN spa warrants to its customers that its products will be free from defects in mate-
rials and workmanship for a period of two years from the date of purchase.
For a period of two years from the date of purchase, we will replace free of charge any
parts that are defective or prove to be defective when used under normal conditions of
use and maintenance (proof of purchase required).
We reserve the right to inspect the defective part before replacing it.
RAIN spa shall not be liable for any costs or incidental or consequential damages
caused by a defective product. RAIN spa’s liability under this warranty is limited exclu-
sively to the replacement of defective parts.
To exercise your warranty right, return the unit to your dealer with a copy of the purcha-
se receipt.
Rain spa reserves the right to evaluate the returned goods.
Warning: Any unauthorized modications to this unit that are not expressly approved
by RAIN spa may void the user’s authority to operate this equipment and the warranty.
Warning: This equipment is not intended for use by small children or incapacitated
persons without proper supervision.

RAIN s.p.a.
via Kennedy 38/40
20023 Cerro Maggiore
ITALY (MI)
www.rain.it
DESIGNED
IN ITALY MADE IN P.R.C.