Installation Guide

Symmons Industries, Inc. ■ 31 Brooks Drive ■ Braintree, MA 02184
[phone], [phone]
■ Fax [phone]
Website: www.symmons.com
■ Email: [e-mail]
© 2010 Symmons Industries, Inc. Printed in U.S.A.
■ ZV-971 ■ 121010
■ If piston appears restricted then do the
following:
(1) Tap the handle or stem end of the
spindle against a solid object to free
the piston.
(2) Try soaking in household vinegar
and repeat step (1).
■ If unable to free piston, replace control
spindle, p/n TA-10.
Important:
Do not attempt
removal of the piston.
Valve re-assembly
Reassemble by reversing above
procedures.
Aer the control spindle assembly (TA-10)
is threaded back into the spindle cap
assembly (T-12A) ensure control spindle
is rotated 1/2 turn clockwise from its
maximum counter clockwise rotational
position. Failure to do this will damage
assembly.
Service Instructions
Removing control spindle assembly
(Ref. parts assembly figure)
■ Shut o water supply to valve and
remove control valve handle and
dome cover.
■ Remove escutcheon plate by rst
removing escutcheon screws.
■ Turn valve’s control spindle to half
way position between minimum and
maximum rotation.
Important: Failure to
do this can damage
control spindle assembly.
■ Unscrew both spindle cap and control
spindle assembly.
Hot/Cold seat repair kit
Order p/n TA-4, T-35A and T-35B.
Installation requires both hot & cold removal
tools, p/n T-35A & T-35B.
■ Remove control spindle assembly.
■ Remove both seats with removal
tools.
■ Replace both seats even if only one
appears worn.
■ Install and tighten both seats to 15 foot
pounds of torque.
Control spindle washer repair kit
Order p/n TA-9.
■ Remove control spindle assembly.
■ Remove cold washer by holding spindle
using valve handle and unscrew cold
washer retainer using channel lock
pliers.
■ Remove hot washer by removing hot
washer screw.
Checking water pressure
balancing piston
e perforated end of the control spindle
assembly houses the water pressure-
balancing piston which is the heart of the
valve.
■ Remove control spindle assembly.
■ Shake spindle assembly and listen for
clicking noise. Piston should be free to slide
back and forth the full length of its travel.
Trouble Shooting Chart
Problem Cause Solution
Valve will not pass water.
Both hot and cold water supplies are
not turned on.
Turn on both supplies. Valve will not operate
unless both hot and cold water pressure is on.
Valve leaks when shut o.
Hot and cold washers are worn or
foreign matter (dirt, chips) is lodged
between washers and seat surfaces.
1) Replace washers using control spindle washer
repair kit, p/n TA-9.
2) Replace hot & cold seats using hot/cold seat
repair kit, p/n TA-4.
Temperature control handle is turned
from cold to hot (or hot back to cold)
and volume from spout or head is not
constant.
Pressure-balancing piston housed in
spindle assembly is restricted from
free movement by foreign matter.
1) Open valve halfway, remove handle and tap
spindle with plastic hammer.
2) Check water pressure balancing piston in
control spindle. See service instructions.
3) Replace control spindle, p/n TA-10.
Valve delivers sucient quantity of cold,
but little hot, or the reverse.
Same as above Same as above
Temperature varies without moving
handle.
Same as above Same as above
Valve delivery temperature reduces
gradually during use; handle must be
turned to hotter positions to maintain
constant temperature.
Overdraw on hot water supply (i.e.
running out of hot water).
Reduce maximum ow by using volume
control adjustment on valve or showerhead.
is will allow longer period of use before
overdrawing hot water supply.
Valve delivers hot water when initially
opened. Water turns colder as handle is
rotated in a counter-clockwise direction
toward the hot position.
Valve is piped incorrectly (i.e. the hot
supply is piped to the valve’s cold inlet
and the cold supply is piped to the hot
inlet.)
If piping is accessible, correct connections to
the valve. If piping is not accessible, order
a reverse seat and tool kit, p/n T-108. Older
installations may also require replacing the
hot seat, hot/cold seat repair kit, p/n TA-4.