Maintenance Instructions
PROBLEM
Valve will not flow water.
Hot and cold water not turned on.
Service Stops not open.
CAUSE
Be sure both supplies are turned on
and service stops are open. Valve will
not operate unless both HOT and
COLD water inlets have pressure.
Replace Hot and Cold washers and
inspect top surface on hot and cold
seats for damage.
Pressure balancing piston housed in
control spindle assembly is blocked
from free movement by foreign
matter.
With valve open half way, remove
temperature handle and tap spindle with
plastic hammer. If problem is not solved,
remove spindle assembly completely
and tap handle end against a solid
object to free piston. Rinse out control
sample assembly. Soaking in
household vinegar will help free foreign
debris matter buildup.
Water volume from valve is
inconsistent during operation.
Reduce maximum flow rate out of valve
or shower head. This will allow longer
period of use before reduction of hot
water supply.
Supply system is running out of hot
water.
Temperatures out of valve reduces
gradually during use.
Hot and cold water washers are worn,
or foreign matter (solder, chips, etc.)
are between washers and seat
surfaces.
SOLUTION
Temperatures fluctuates without
moving temperatures handle.
Valve delivers an insufficient quantity of
Hot or Cold water.
This is a design function of the valve.
Water is allowed to trickle from the tub
spout when diverter is set in shower
position; in accordance to national
standards.
While using a tub & shower valve with
integral diverter set for shower, a trickle
of water runs from tub spout.
Back to Back Installation Drawings
6 1/4"
MIN.
3 1/8"±1/2"
SHOWER DISCHARGE
1/2" COPPER
2 3/8"±1/2"
HOT & COLD
INLETS
2 5/8±1/2"
TUB DISCHARGE
1/2" COPPER
3/4" COPPER
COLD
FINISHED
WALL
STANDARD
VALVE
REVERSE CORE
VALVE
HOT
HOT
COLD
COLD
Valve makes loud noise.
Piston in stem is moving back and forth
because of a large pressure
differential between the HOT and
COLD water lines.
Alter the water system such that the
pressure differential at all shower
valves is no more then 5 psi.
NOTE:
It is recommended that when any TG1 shower valve is first installed on a new large system or in an excessively dirty system,
that the hose bibb flushing out kit (
RK7000-20HB
) be used to clean the valve of debris from the installation of the water system. To
do this, remove the spindle assembly per the service instructions and replace with the hose bibb bonnet nut. Attach a garden hose
to the bibb to direct the water to a drain. Open both service stops and allow the water to run for several minutes. Once the system
is completely flushed out, replace the hose bibb with the spindle assembly. Open valve to flush out any debris that may be in the
spindle.
NOTE:
If the shower valves are going to remain unused for an extended period of time (over 3 months) then the water should be
shutoff to the valves (via service stops or system control valve) and each valve should be opened to allow the water in the valve to
evaporate. This is to keep the piston from sticking, due to stagnant or hard water, once the valve is in use again. If piston does stick,
soak the valve assembly in vinegar per the maintenance instructions.
Valve leaks when shut-off.
The ZURN TEMP-GARD Pressure Balancing
Shower Valve is equipped with an adjustable
limit stop screw. The limit stop device is to be
used to limit the valve handle from being turned
to undesired hot water discharge temperatures.
To adjust the limit stop screw, remove handle
and escutcheon, turn valve to maximum desired
temperature and turn the limit stop screw until it
seats.
IMPORTANT: Failure to adjust the limit stop
screw properly increases the chances for
serious injury.
Form #
CF1007
Date:
08/22/14
Product #
IS7000
C.N. No.
SAN006742
Rev.
K
Sheet:
3 of 4
