Hydrotech EBP75TFC-3SF User Manual

Replacing the Auto Shutoff With a Solenoid Valve on Economy
Reverse Osmosis C/W Booster Pump (Model # EBP75TFC-3SF)

The kit (Part #92374) consists of the following
a) Solenoid Valve 24V (Qty 1)
b) Blue Wire Nuts (Qty 2)
c) Blue ¼” Tubing (9” length)
d) Red ¼” Tubing (14” length)
e) Black ¼” Tubing (19” Length)
f) Pull Ties (2)
g) Elbow ¼” NPT X ¼” Quick Connect
h) Adapter ¼” NPT X ¼” Quick Connect
i) Screw for the mounting the solenoid to the RO Bracket

Please verify that you have received all the components in the kit as described above

Tools Required:

• 11/16” Wrench

• Knife or Wire Stripper

• Phillips Screwdriver

Replacement Instructions

1. Disconnect the booster pump power supply.

2. Unscrew the white compression nut from the membrane housing using 11/16” wrench and disconnect the white tubing.

RO Membrane

Housing

White

Compression

Nut

White Tubing

Disconnected

3. Remove the RO membrane housing from the clips and hang it to the side of the RO Module

#54920 1/11

4. Remove the white tubing from the Auto Shut off as shown below. This tubing is the other end of the tubing removed
from the RO membrane housing. Pull this white tubing out from the RO bracket/module and save it for future use for
this installation.

This is the same tube.

Disconnect Tubing

Auto Shutoff

Valve

Pull this tubing out from the module.

5. Remove the other three white tubings from the auto shut off valve and discard the auto shut off valve.

White Tubing #3White Tubing #2White Tubing #1

Below is what the RO would look like at this step.

6. Remove and discard the small white tube from the high pressure switch.

Auto Shutoff Valve

7. Remove the white tubing connection to the outlet of the booster pump.

Disconnect tube

from Booster

Pump outlet

8. Install the elbow (1/4” NPT X ¼” Quick Connect) supplied to the solenoid valve at the port where the arrow is pointing
towards. Install the adapter (1/4” NPT X ¼” Quick Connect) to the other side of the solenoid valve. Apply Teon tape on
the threads of the ttings. Note the black arrow on the solenoid valve.

Adapter

Fitting

Elbow
Fitting

9. Attach solenoid valve to the bracket with the screw provided. Please refer to the pictures below.

Solenoid Valve
attached to the

Bracket

Attach the

solenoid

with screw

provided.

10. Disconnect the white tubing from the tee as shown. Also disconnect the other end of this white tubing from the inlet of

the booster pump. Discard this white tubing.

Disconnect white

tubing from the tee.

Disconnect white

tubing from

booster pump

inlet.