911-404 Rev. J 3/2003
Page: 1 of 2
RO BOOSTER PUMP SYSTEM
Installation and Operation Instructions
The SHURflo Reverse Osmosis (RO) Booster Pump System enables most RO filtration units to be used anywhere
there is electrical power and water. The system was developed for areas where the average incoming water
pressure may be below 40 psi., or even from a non-pressurized source (tank). The booster pump maintains a high
RO feed water pressure, ensuring a consistent production of high quality RO water. The system includes an
accumulator tank pressure switch, which turns off the booster pump once the tank is full. The compact design of
the system and minimal connections allow it to be easily installed under a sink. Quiet and safe, SHURflo RO
Booster Pump Systems will provide years of service.
♦
85 Series "High Flow" pumps are for RO filtration units that produce between 35–100 GPD
[132–284 LPD]
CAUTION: 85 Series RO Booster Pump Systems
MUST
be used in conjunction with RO filtration units rated to
produce at least 35 GPD Failure to do so may result in excessive pressure
(125 psi. [8.5 bar])
, resulting in
damage to RO membrane, filter housings, and possible premature wear to the booster pump.
♦
70 / 80 Series "Low-Flow" pumps are for RO filtration units that produce up to 35 GPD The 70-121 does not
require regulated inlet water, internal bypass is not affected by inlet pressure.
INSTALLATION GUIDELINES
1. The enclosure/pump should be placed as close to the RO unit as possible. Located in an area that is dry, with
ambient temperatures between 40°–90°F
[5°–35°C]
.
2. 70 Series pumps may be mounted in any position. If mounting vertically the pump head should be in the down
position so in the event of a leak, water will not enter the motor. Secure the rubber feet with
#
8 hardware (not
provided). DO NOT compress the feet. Compressing the feet reduce their ability to isolate vibration/noise.
3. 80 & 85 Series have a "keyhole" slot on the back of the enclosure for vertical mounting. A vertical position
ensures air can purge from the booster pump. If necessary, the booster pump may be positioned horizontally.
4. Turn OFF the incoming water supply line and relieve pressure at the water faucet.
NOTE: RO filtration units may be configured with an outlet connection at the Pre-Filter. RO units of this type permit
the booster pump to be plumbed between the "Pre" and "Post" filters. Refer to the alternate plumbing
routings shown in the illustration.
4. Connect the cold water Inlet (
1
/
4
" or
3
/
8
" O.D. flexible polyethylene) to the "
INLET
" port of the enclosure/pump.
Tubing ends should have clean, square cuts to prevent leaks. Install the tubing into the John Guest
®
Quick
Connect fittings by pushing the tube in firmly until it stops.
5. Connect a suitable length of tubing from the "
OUTLET
" of the enclosure/pump to the RO unit.
6. Install the tank pressure switch into the accumulator tubing. Insure proper connection of transformer and tank switch
7. Turn ON incoming water supply.
8. Plug the transformer into a
GROUNDED
outlet. The pump will operate until the accumulator tank is pressurized. The
pump will then operate whenever the accumulator pressure drops below the pressure switch "turn on" setting.
APPLICATION TIPS
