Troubleshooting Guide - STA-RITE S7MD60 Owner's Manual

1. Short Cycle Time:
NOTICE: Cycle Time will vary with each installation
and between different areas of the country. The follow-
ing causes and remedies are for cycle times shorter
than normal for your area.
A. Chlorine residual too low; maintain proper residual
(consult pool professional for recommendation).
B. Flow rate too high; restrict flow to rated capacity
of filter (see instruction plate on filter or specifica-
tions on Page 6).
C. Filter is too small; install an additional filter.
D. Improper/insufficient precoat; see precoat instruc-
tions under "Initial Setup" (Page 7).
E. Filter module is dirty or plugged; thoroughly
clean the filter (see No. 4, "Plugged Module
Cloth" (below), and "Module Cleaning
Procedure", Page 10).
F. Too much DE; check for clogged filter module.
G. Water is chemically out of balance; consult pool
professional.
H. Algae in the pool. Apply heavy dose of chlorine or
algicide as recommended by the pool manufacturer.
2. Low Flow/High Pressure:
A. Filter Module plugged; clean module thoroughly
(see Pages 10 and 11).
B. Pipe blocked downstream from filter; remove ob-
struction.
C. Piping too small; use larger pipe (consult dealer
for sizing).
D. Filter area too small; install an auxiliary filter (con-
sult dealer for recommendation).
E. Outlet port check valve obstructed (if applicable);
remove obstruction to allow valve to open.
3. Low Flow/Low Pressure:
A. Pump too small; consult dealer for recommenda-
tions.
B. Plugged pump or plugged hair and lint trap; clean
thoroughly.
4. Plugged Module Cloth:
NOTICE: The pleated filter material may look matted
after use. However, as long as the DE adheres to the
pleated cloth, the filter is operating properly.
A. Insufficient precoat; see precoat instructions
(Page 7).
B. Insufficient cleaning; follow cleaning instructions

TROUBLESHOOTING GUIDE

closely and clean thoroughly (see Pages 10 and
11).
C. Water is chemically out of balance; consult pool
professional.
D. Excessive air in filter; non-precoated areas may
plug. Vent air from tank and check for pump suc-
tion pipe leaks. Clean air bleed filter in grid as-
sembly with a hose and soft flow nozzle.
E. Filter is too small. Install an additional filter.
F. Pool water contains iron. See "Special Cleaning
Instructions", Page 11.
G. Algae in pool. Apply heavy dose of chlorine or
algaecide as recommended by the pool manufac-
turer.
H. Use of incorrect chemicals with PHMB sanitizers.
Replace filter module.
I. Not enough D.E. precoat. See Table IV, Page 6.
5. Pool Water Not Clean:
A. Chlorine residual too low; maintain adequate chlo-
rine residual (consult pool service technician for
recommendation).
B. Broken filter module passing DE into pool; replace
defective module.
C. Insufficient or improper precoat; follow precoating
instructions and use recommended amount of DE
(see Pages 6 and 7).
D. Inadequate turnover rate; consult dealer to verify
that equipment is properly sized for your pool.
E. Pump is too large and is overpumping. Reduce
the flow rate.
F. The filter inlet and outlet are plumbed backwards.
Re-plumb them correctly.
G. Pool water contains iron. See "Special Cleaning
Instructions", Page 11.
H. Heavy or improper application of powdered chlo-
rine tablets using a binder. See "Special Cleaning
Instructions", Page 11.
I. Algae in the pool. Apply heavy dose of chlorine or
algicide as recommended by the pool manufacturer.
6. Pool Accessories Stop Working:
A. Clean filter and observe performance of acces-
sories.
B. If accessories perform better after filter has been
cleaned, use a shorter cleaning cycle for the filter
(that is, clean the filter after a pressure rise of less
than 10 PSI).
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