Zurn Wilkins 375XL Bedienungsanleitung

Lies die bedienungsanleitung für Zurn Wilkins 375XL (4 Seiten) kostenlos online; sie gehört zur Kategorie Nicht kategorisiert. Dieses Handbuch wurde von 24 Personen als hilfreich bewertet und erhielt im Schnitt 4.9 Sterne aus 12.5 Bewertungen. Hast du eine Frage zu Zurn Wilkins 375XL oder möchtest du andere Nutzer dieses Produkts befragen? Stelle eine Frage

Model 375XL, 375XLB LEAD-FREE*

Reduced Pressure Principle (1-1/4”- 2”)

*This product contains a weighted average lead content less than 0.25% for wetted surfaces.

*Meets the requirements of NSF/ANSI 61

CAUTION: Installation of Backow

Preventers must be performed by quali-

ed, licensed personnel. The installer

should be sure the proper device has

been selected for the particular instal-

lation. Faulty installation could result

in an improperly functioning device.

ZURN WILKINS Model 375XL Reduced

Pressure Principle Backow Preventers

are for use on potable water lines where

a health hazard could exist if a backow

situation were to occur.

Proper performance is dependent upon

following these installation instructions and

prevailing governmental and industry stan-

dards and codes. Failure to do so, according

to ZURN WILKINS Limited Warranty "...

releases ZURN WILKINS of any liability

that it might otherwise have with respect to

that device." Such failure could also result

in an improperly functioning device.

Damage to the device could result wherever

water hammer and/or water thermal expan-

sion could create excessive line pressure.

Where this could occur, shock arresters

and/or pressure relief valves should be

installed downstream of the device.

1. Before installing a Model 375XL

Backow Preventer, ush the line

thoroughly to remove all debris, chips

and other foreign matter. If required, a

strainer should be placed upstream of

the Backow Preventer.

CAUTION: Do not use a strainer in

seldom used emergency waterlines

such as re lines.

2. Provide adequate space around the

installed unit so that the test cocks

will be accessible for testing and

servicing.

3. WARNING: If installation of a Model

375XL is in a building, a suitable

drain arrangement be providMUST-

ed to drain off spillage from the relief

valve. An air gap at least two times

the pipe diameter must be provided

between the relief valve and the drain

piping to prevent a cross-connection.

Air Gap AG-12 not intended to sup-

port weight of drain pipe.

CAUTION: Do not pipe the relief valve

solidly to a oor drain, sewer or sump.

CAUTION: An adequately sized drain is

required to prevent possible water damage

due to relief valve discharge.

375XL REDUCED PRESSURE PRINCIPLE

1. Start with both shut-off valves

closed. Slowly open the inlet shut-off

valve until the backow preventer

is completely pressurized. A brief

discharge from the relief valve may

occur while the device is pressurizing.

The discharge should cease by the

time the shut-off valve is fully open.

Device should function properly. If

the discharge does not stop, refer to

"MAINTENANCE INSTRUCTIONS"

for repair procedures.

2. After the device has been pressur-

ized, vent all trapped air from both

check valves by slightly opening each

of the four test cocks.

3. Slowly open the downstream shut-off

valve. The Model 375XL Reduced

Pressure Principle Backow Pre-

venter is now in service.

4. If "spitting" or intermittent discharges

from the relief valve are noted, it

could be a result of pressure uctua-

tion and/or a water hammer condition

in the system. If such conditions exist,

install water pressure reducing valves

or water hammer shock arresters in

compliance with industry standards

as needed.

5. After the Model 375XL has been

properly installed, test the device (see

"TEST PROCEDURES"). If the de-

vice fails the test, remove the rst and

second check valves and thoroughly

ush the device. If the relief valve

fails to operate properly, inspect the

sensing passage for clogging (see

"MAINTENANCE INSTRUCTIONS").

Clean rubber seals of all debris and

place unit back in service.

4. Install valve at least 12 inches above

surrounding ood level.

5. Always consult local codes for

installation methods, approvals and

guidance.

OUTDOOR INSTALLATION

Model 375XL Backow Preventers may

be installed outdoors only if the device

is protected against freezing conditions.

Exposure to freezing conditions will result

in improper function or damage to the

device. The installation location must be

kept above 32°F. All the basic installation

instructions apply.

If installation is in a pit or vault, the Backow

Preventer must never be submerged in

water because this could cause a cross-

connection. Make sure that the pit or vault

always remains dry by providing ample

drainage.

INDOOR INSTALLATION

Indoor installation is preferred in areas

that are subject to freezing conditions. All

the basic installation instructions apply to

such installations.

PARALLEL INSTALLATION

Where uninterrupted service from a single

meter connection must be maintained, two

or more Backow Preventers may be con-

nected in parallel. All the basic installation

instructions apply to parallel installation.

Be sure to allow adequate room between

the units for testing and repair.

PLACING THE DEVICE IN SERVICE

After the installation of a Model 375XL has

been completed, place the unit in service

as follows:

 Installation Testing Maintenance Instructions

1

INLET SHUT OFF

DIRECTION OF FLOW

30" MAX.

12" MIN.

ENCLOSURE

AIR GAP

OPTIONAL

WATER METER

FLOOR

DRAIN

3" PIPE (DRAIN LINE CAN

BE ANY STANDARD PIPING MATERIAL)

WILKINS

XL

PROTECTIVE

1

ZURN WILKINS

1747 Commerce Way, Paso Robles, CA 93446 Phone:855-663-9876 Fax:805-238-5766

®

www.zurn.com

®

! WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

! ADVERTENCIA: Cáncer y daño reproductivo - www.P65Warnings.ca.gov

! AVERTISSEMENT: Cancer et néfastes sur la reproduction - www.P65Warnings.ca.gov

Produktspezifikationen