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Powers ES200/400 Emergency Tempering Valves User Manual

Page 3

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TI ES200/ES400 v2

Page 3

CALIFORNIA PROPOSITION 65 WARNING

WARNING: This product contains chemicals known to the State of
California to cause cancer and birth defects or other reproductive
harm.

(Installer: California law requires that this warning be given to the
consumer.)
For more information: www.wattsind.com/prop65

What to look for if:
• The flow of water is less than desired.

a. Stop valves or supply to Hydroguard not fully open.
b. Clogged checkstop strainer screens.
c. Accumulation of lime deposits around valve seats.
d. Low supply pressures or unusual supply temperatures.

• The flow of water is completely shut off.

a. Stop valves or supply valves are completely closed.
b. Valves downstream from Hydroguard fully closed.
c. Loss of cold water supply pressure.

MAINTENANCE AND TROUBLESHOOTING

5. Remove four (4) body screws and carefully remove lower

body.

6. Slide out hot water poppet and bypass assembly.
7. Loosen plug on bottom of lower body. Remove plug,

spring, and cold water poppet.
CAUTION: The plug is under spring pressure.
Use care when removing.

8. Remove the “O” rings from the body.

• Inspection:

1. Inspect the body for any damage, deposits, or pitting -

clean or replace as necessary.

2. Check the poppets, springs, and bypass assembly for any

damage, deposits, or pitting. If any component appears
stuck, worn, or damaged, replace all the internal
parts.

3. Check the actuator for proper operation. Measure and

note the entire length of the actuator at room temperature
or mark the stem with a piece of tape. Place the actuator
in hot water (105-115

°

F) for one (1) minute. Measure the

length of the actuator. Actuator should be at least 1/8"
longer than when at room temperature.

DISASSEMBLY AND REPAIR INSTRUCTIONS

INSTALLATION INSTRUCTIONS

1. IMPORTANT: Flush all piping thoroughly before installing.

2. Locate the Hydroguard as close as possible to the fixture

being supplied.

Note: Remove body screws to turn outlet to any of four
positions. The Hydroguard body can be rotated to any
position due to the union inlets. Install thermometer in
discharge using supplied fittings.

Make certain the body screws and unions are tightened
securely to prevent leakage.

3. CAUTION: When the Hydroguard supplies tempered water to

self-closing and/or solenoid valves, provide a shock
absorber (Powers Part No. 460-353) on the discharge line.
This protects the Hydroguard thermostatic motor from dam-
age by water shock waves generated by the quick closing
valves.

4. Consult proper medical/safety authorities for the opti-

mum temperature for your application. Before use, check
for proper discharge temperature. Reset if necessary.
Valve is preset for 85

°

F (29.4

°

C).

ADJUSTMENT AND TESTING

1. Replace adjustment screw and set to proper

temperature. Open all fixtures and verify all outlet
temperature is adequate.*

2. Verify adequate flow rate from fixtures.
3. Close the cold water checkstop. Verify that flow shuts

down immediately.

4. Open cold water checkstop, and close hot water

checkstop. Verify adequate flow from fixture(s).

5. Open hot water checkstop, verify temperature returns to

set temperature.

6. Record test data on maintenance tag which should be

attached to the valve.

*Contact factory for high temperature readjustment

procedure.

Consult proper medical/safety authorities for optimum
temperature for your application. Before use, check
for proper discharge temperature. Reset if necessary.

Per ANSI Z358.1-1998, Emergency fixtures should
be tested weekly. Any unit failing any of the above
tests should be repaired or replaced immediately.

Due to the safety nature of this product, we recommend removal
of the valve and a full inspection of all components whenever the
valve is disassembled for any reason.
• Disassembly:

1. Close supply valves and/or checkstops. Take apart unions

between the valve and the checkstops.

2. Remove valve from its outlet piping. Work should be

performed on a clean table or workbench. Use caution
when disassembling the valve as there are several
small springs and parts inside.

3. Remove bonnet screws with a 3/15" hex wrench.
4. Remove bonnet and actuator.