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17
REMEDIES
Install new membrane ele-
ment(s). See Spare Parts List
(Section 2.20).
Check the flow rate manually
with a stop watch and a cali-
brated container.
Flush and/or clean machine.
Replace the O-rings, check
the sealing surfaces on the
O-ring groove and end caps.
Replace damaged parts.
Replace with new membrane
elements. See Spare Parts
List (Section 2.20).
Calibrate the meter with a DS
standard solution or check the
readings with another conduc-
tivity meter. Replace or clean
the probe. Check the connec-
tions between the probe and
monitor. Refer to Section
2.16.2 (Deluxe Model).
Ensure machine is
plugged in.
POSSIBLE CAUSES
Useful life of membrane
element(s) expired
Inaccurate permeate flow meter
(DLX only)
Dirty or fouled membrane
element (s)
O-rings on membrane ele-
ment(s) unseated or
damaged parts
Useful life of membrane ele-
ment(s) expired
Change in incoming
water quality
No power to machine
PROBLEM
Low permeate production
(continued)
Low concentrate flow with
normal or high operating
pressure
Declining rejection
(high permeate
conductivity)
ON/OFF switch ON:
machine not running
TROUBLESHOOTING GUIDE