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Watts ZRO-4 User Manual

Watts ZRO-4
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Troubleshooting
Problem Cause Solutions
Low/slow production Excessive air pressure in tank Relieve pressure at schrader valve on tank
(set to 7psi with the tank empty)
Pump not operating Wiring connection broken (plug 110 AC wall
plug back in at wall and/or reconnect the 24
VAC wire harness connectors)
Replace pump if needed
Fouled membrane Replace membrane
Plugged pre-filters Replace filters
Crimped tubing Check tubes to make sure they are
not kinked
Angle stop or water line valve Ensure valves are opened by turning valve
not fully opened handle counter clockwise until it stops
Milky colored water Air in the system Air in the system is a normal occurrence
with initial start up of the RO system. This
milky look will disappear during normal use
within 1-2 weeks. If condition reoccurs after
filter changes, drain tank 1 to 2 times.
Faucet Dripping Needs adjustment see page 12
Pump short cycles Ball valve on tank closed Open the ball valve on the top of the tank
Blue tube blocked between Remove kinked/damaged section and
the tank and RO system replace if necessary Call for
Faulty pressure switch technical support
Bowl leaks at the top after Damaged/Dry O-ring Lubricate with water soluble lubricant
changing the filters or replace O-ring as necessary
(Do not use Vaseline
®
or other
petroleum based lubricants)
Pump constantly running Electrical fault Call for technical support. Close faucet
Faucet left on and let tank fill for 2 to 3 hours.
Plugged pre-filters Replace filters
11
Checking air pressure in tank
Note: Check air pressure when tank is empty.
Step 1 Open faucet and drain the tank.
Step 2 Using a digital air gauge check the air pressure in the tank. There should
always be between 5-7psi.
Step 3 If you have more than 7psi release air and recheck. If you have less than
5psi, add air. Air can be added with a bicycle pump.

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Watts ZRO-4 Specifications

General IconGeneral
BrandWatts
ModelZRO-4
CategoryWater Filtration Systems
LanguageEnglish

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