Troubleshooting - Pentek RO-2500 Installation And Operating Instructions Manual

6 - TROUBLESHOOTING

Leaks between bottom of housing and cap
1. Ensure sump is tightly screwed to cap. If it still leaks close the cold water supply and tank valves.
E
2. Clean black rubber O-ring and lubricate with clean silicone grease. With two fingers, insert
O-ring in groove below threads of housing and press into place. Tighten housing back onto cap.
N
3. Open the cold water supply and tank valve. If leaks persist, call your local plumber or installer.
G
Leaks on tank valve assembly
L 1. Open drinking water faucet to drain storage tank. Let drinking water faucet run until it drips. Turn off cold
water supply.
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2. Push in on white collar of tank valve fitting and pull out tubing. Unscrew the tank valve from the storage
tank. Rewrap threads on top of the tank with Teflon® tape. Screw tank valve back onto tank. Trim 1/2"
S
from end of tubing and reinsert 5/8" into tank valve fitting.
H
3. Open the cold water supply and shut off the reverse osmosis faucet. Let the system pressurize for several
hours and check for leaks. Check again after tank is fully pressurized.
Leaks on quick-connect fittings
1. Close the cold water supply and tank valve.
2. Depress plastic collar and pull out tubing.
3. Cut off 1" of tubing and place a mark 5/8" from end of tubing. Tubing should be cut squarely. The internal
and external burrs should be removed.
4. Push tubing 5/8" into fitting.
5. Open the cold water supply and tank valve. If leaks persist, call your local plumber or installer.
No flow or slow flow from the brine (drain) line
Less than 1
NOTE:
• Before checking brine (or reject) flow, make sure the system is producing water by turning off the valve
on the storage tank and opening the faucet. Water should drip from faucet.
1. Examine the P5 and EPM10 pre-filters. If clogged, replace (see Chapter "Replacing the Pre-Filter and
Post-Filter") and recheck the brine (or reject) flow rate.
2. If the pre-filters are not at fault, the brine (or drain) flow controller is probably clogged. Call your local
plumber or installer.
High TDS in Product water
If high levels of TDS (Total Dissolved Solids) are detected in your product water (approximately 30% or
greater of what is measured in your tap water, as determined with a conductivity meter or by a TDS monitor
faucet), the RO membrane may need to be replaced, or the brine (or drain) flow control tubing may be
clogged. See your dealer or plumber to check product water TDS.
Reduced production
Slow or no product water flow usually indicates either a clogged pre- filter or an exhausted membrane.
First, replace the pre-filters. If the production rate is not improved, replace membrane.
Gradual return of taste and odour
Gradual return of unpleasant taste and odour over a period of time may indicate that your filter cartridges
and/or RO membrane need to be replaced. See chapters"Replacing the Pre-Filters" and "Replacing the
Reverse Osmosis Membrane".
1 / " cups per minute
2
16