Duro clean IF Mode D'emploi page 14

PROBLEM
1. Water is clear when drawn, turns
red upon standing (stain producing)
2. Water is red when drawn from tap
3. Excessive pressure loss through
filter
4. "Milky" or "bubbly" water (appears to
contain small bubbles
Trouble Shooting Guide
CAUSE
A. Insufficient air drawn by hydrocharger
B. Bypass open or leaking
C. Filter bed backwashed at improper
intervals
D. Presence of manganese or tannins
E. Flow rate excessive for model
F. Check-valve located between hydrocharger
and pressure tank, disrupting water flow
G. Pumping cycle too short. pH of treated
water too low (should be 7.0 or higher;
with manganese, pH must be 8.2)
A. Filter bed overloaded with precipitated iron
due to insufficient backwash flow rate
B. Filter bed backwashed at improper
intervals
C. Solenoid valve malfunction or inadequate
supply system pressure/flow rate
A. Filter bed overloaded with precipitated iron
B. Control inlet/outlet valve(s) not fully open
C. Sand, silt or mud collecting in filter media
D. Filter bed not properly "classified"
E. "Cementing" or "channelling" of filter media
A. Excess hydrocharger air-draw
B. Excess gases in water (carbon dioxide,
hydrogen sulfide, methane)
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CORRECTION
A. Check hydrocharger adjustment. If unable to adjust for
long enough draw, check pumping rate.
B. Close bypass valve and/or repair as necessary.
C. Refer to backwash frequency chart in operation
manual to ensure unit is set correctly. Do not increase
the backwash frequency unless required to based on
the chart, since the media needs to be somewhat
iron-fouled for best performance (in more severe iron-
fouling cases, filter bed may need chemical cleaning -
contact dealer).
D. Recheck water analysis.
E. Re-read Sec. 2: Facts to Remember When Planning
Your Installation, Page 4.
F. Relocate check-valve.
G. Lengthen pump cycle time. Replenish MpH
component in media (contact dealer).
A. (a) Recheck well pumping rate and repair or replace
as required. (b) Check for obstructions or kink in drain
line, or (c) for improper drain line flow controller (see
specs). Upon correction of this problem, if manually
backwashing does not clear bed of iron, filter bed may
need chemical cleaning - contact dealer.
B. Refer to backwash frequency chart in operation
manual to ensure unit is set correctly. Do not increase
the backwash frequency unless required to based on
the chart, since the media needs to be somewhat iron-
fouled for best performance (in more severe iron-
fouling cases, filter bed may need chemical cleaning -
contact dealer).
C. Replace solenoid valve malfunction or inadequate
supply system pressure/flow rate.
A. Refer to Section 2A above.
B. Open valves.
C. Check well for these conditions.
D. Manually backwash to reclassify.
E. Prod (stir) filter bed to break up hardened layer,
increase backwash frequency to prevent recurrence.
A. Check adjustment for duration of draw in excess of
one-third pumping cycle (see Section 3, Step 8,
Page 6).
B. May require cleaning or installation or air-relief control
(contact dealer).