Hydrotech PURA QCRO Series Quick Change Reverse Osmosis Drinking Water System - Manual (Page 29)

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If a problem cannot be corrected through the use of this troubleshooting guide please have the following information
ready prior to calling the 1-800 number on the back of this manual:
• Serial #
• Model #
Problem Possible Cause Remedy
1. Insufficient
quantity of
product water
available to
service.
a. Service greater than unit’s specified
output.
a. Use optional large tank for more storage
capacity.
b. Insufficient feed water flow. b. 1. Clogged shut-off valve or feed tubing;
clean out or replace.
2. Clogged prefilter; replace.
3. Clogged manifold; clean or replace.
c. Insufficient feed water pressure c. 1. Same as (b) above.
2. Change in line pressure; install booster
pump.
d. Increase in feed water TDS. d. 1. Same as (a) above.
2. Install booster pump.
e. Reduced feed water temperature. e. Same as above.
f. Plugged prefilter. f. Replace filter element.
g. Plugged polishing filter. g. Replace polishing filter.
h. RO membrane fouled with sediment. h. Replace RO membrane and prefilter
elements.
i. Shutoff malfunction. i. Clean or replace shutoff.
2. Poor product
water quality.
a. All of (1) above except (a) and (e). a. All of (1) above except (a), (e), and (g).
b. RO membrane filter worn out. b. Replace RO membrane.
d. Shutoff malfunction. d. Replace shutoff.
3. Bad tasting product
water.
a. Decrease in product quality; see (2)
above.
a. Same as (2) above.
b. Foreign matter in storage tank. b. Clean, sanitize, and flush storage tank.
c. Polishing filter exhausted. c. Replace polishing filter
d. Plugged capillary tube. d. Replace capillary tube; replace prefilter, if
necessary.
e. Storage tank bladder is ruptured. e. Replace storage tank and check
precharge pressure.
Troubleshooting Guide