TROUBLESHOOTING GUIDE
I.
Flushometer does not function.
A. Control Stop or Main Valve is Closed. Open Control Stop or Main Valve.
B. Handle Assembly is worn. Install Sloan Handle Repair Kit (B-50-A) or
replace handle.
C. Relief Valve is worn. Replace Inside Parts Kit.
II.
Insufficient volume of water to adequately siphon fixture.
A. Control Stop not open enough. Adjust Control Stop for desired delivery
of water.
B. Urinal Flushometer Parts inside a Closet Flushometer. Replace Inside
Urinal Parts with proper Closet Flushometer Parts.
C. Low Consumption Flushometer installed on a non-Low Consumption
fixture. Replace A-41-A Inside Parts Kit with A-38-A Water Saver Kit.
D. Water Saver Kit installed in old, non-Water Saver bowl. Position Refill
Head A-170 so that SIDE 1 is in the UP Position.
E. Inadequate volume or pressure at supply.
• If no gauges are available to properly measure supply pressure or
volume of water at the Flushometer, then remove the Relief Valve
from the Inside Parts Kit, reassemble the Flushometer and open the
Control Stop. If the fixture siphons, more water volume is required.
If a 3.5 gpf Inside Parts Kit is installed in the Flushometer, then first
flip the Refill Head (under the Diaphragm) to obtain a 4.5 gpf volume.
If this volume is still inadequate, remove the Flow Ring from the Guide
to obtain a 6.5 gpf Kit. If additional flow is still required, try a Low
Pressure Guide Kit A-175-A (#0301104). IMPORTANT - Laws and
Regulations requiring Low Consumption Fixtures (1.6 gpf Water
Closets and 1.0 gpf Urinals) prohibit the use of higher flushing
volumes.
• If fixture does not siphon or if a Low Consumption fixture is installed,
or if the above steps do not prove satisfactory, steps must be taken
to increase the pressure and/or supply.
III. Flushometer closes off immediately.
A. Ruptured or damaged Diaphragm. Install Inside Parts Kit to correct
problem and update Flushometer.
B. Enlarged By-pass orifice from corrosion or damage. Install Inside Parts
Kit to correct problem and update Flushometer.
IV. Length of flush is too short (Short Flushing).
A. Diaphragm Assembly and Guide Assembly are not hand-tight. Screw
the two assemblies hand-tight.
B. Enlarged By-pass orifice from corrosion or damage. Install NEW Inside
Parts Kit to correct problem and update Flushometer.
C. A-19-AU (Black) Urinal Relief Valve in Closet Flushometer. Replace
Relief Valve with A-19-AC (White) Closet Relief Valve.
D. A-41-A Low Consumption Kit installed in non-Low Consumption fixture.
Replace with proper Inside Parts Kit.
E. Handle Assembly is worn. Install Handle Repair Kit B-50-A or replace
the Handle.
V.
Length of flush is too long (Long Flushing) or fails to close off.
A. Relief Valve (A-19-A) is not seating properly or By-pass orifice is clogged
because of foreign material, or By-pass orifice is closed by an invisible
gelatinous film from “over-treated” water.
Disassemble the working parts and wash thoroughly. NOTE: SIZE OF
THE ORIFICE IN THE BY-PASS IS OF UTMOST IMPORTANCE FOR
THE PROPER METERING OF WATER INTO THE UPPER CHAMBER
OF THE FLUSHOMETER. DO NOT ENLARGE OR DAMAGE THIS
ORIFICE. REPLACE INSIDE KIT IF CLEANING DOES NOT CORRECT
PROBLEM.
B. Line pressure has dropped and is not sufficient to force Relief Valve to
seat. Shut off all control stops until pressure has been restored, then
open them again.
C. A-19-AC (White) Closet Relief Valve has been used in a 1 or 1-1/2 gpf
Urinal. Replace with A-19-AU (Black) Relief Valve.
D. Inside Cover is cracked or damaged. Replace the Inside Cover (A-71).
VI. Chattering noise in Flushometer.
A. The A-156-A Segment Diaphragm has been installed upside-down.
Replace the Segment Diaphragm to the proper position as instructed by
markings on the Diaphragm.
B. The Inside Cover has become distorted from wear, freezing or abuse.
Replace Inside Cover.
VII. Leaking at Handle Assembly.
A. The B-39 Seal is worn or deteriorated. Install new B-39 Seal. NOTE: The
B-39 Seal will easily slide onto the B-40 Bushing if it is wet.
B. Handle gasket has been omitted. Install A-31 Handle Gasket or Sloan
Handle Repair Kit (B-50-A).
C. Valve Handle Bushing is worn. Install Sloan Handle Repair Kit (B-50-A).
Refer to the Regal Flushometer Maintenance Guide for additional
Troubleshooting and Repair Part information.
If further assistance is required, please contact the Sloan Valve Company
Installation Engineering Department at 847/671-4300.
