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STEP 3
Tighten Bolts - Establish a uniform pressure over the fl ange
face by tightening the bolts in 5 ft. lbs. increments following a 180° opposing
sequence as shown in the table above. Care must be taken to avoid
"BENDING" the fl ange when joining a Spears
DO NOT USE BOLTS TO BRING TOGETHER IMPROPERLY MATED
FLANGES.
MAINTENANCE & SERVICE INSTRUCTIONS
The Screen Support Housing can be easily accessed from the Bonnet Nut
for screen replacement or internal component service. CAUTION: Before
servicing, the system should be shut down, depressurized and drained.
STEP 1
Remove Bonnet Nut by turning it in a counterclockwise direction.
NOTE: Screen housing is attached to the inside of the bonnet nut and will
slide out when nut is removed. Remove Screen Support Ring and Screen.
Clean all components and replace as necessary. To service or replace O-ring,
remove Retaining Clip from top of Bonnet Nut and separate Screen Support
Housing from Bonnet Nut. Examine O-rings for debris or damage. Clean or
replace as necessary.
Plug
O-ring
Bonnet
Screen Support
Housing
Housing O-ring
Screen
Screen
Support Ring
STEP 2
Reinstall Screen into Screen Support Housing, and then install
Screen Support Ring. NOTE: Make sure that tabs on Screen Support Ring
are aligned properly with end of Screen Support Housing before snapping
into place. Apply a mild soap & water solution to O-ring and slide the
reassembled Screen Support Housing back into the Strainer Body. NOTE:
If O-ring was serviced, insert Screen Support Housing into Bonnet Nut and
reinstall Retaining Clip. Turn Bonnet Nut in a clockwise direction until properly
seated.
fl ange together.
®
Retaining Clip
Magnetic Plug
(Optional)
Strainer Body
5
QUICK FLUSH
STEP 1
Depressurize system (Or install a Bleed-off valve) and remove
O-ring sealed Drain plug.
STEP 2
Flush to remove debris.
STEP 3
Reinstall Drain plug.
Tighten snug.
PRECAUTIONS AND WARNINGS
CAUTION:
The system must be designed and installed so as not to pull the
components in any direction. Pipe system must be cut and installed in such
a manner as to avoid all stress loads associated with bending, pulling, or
shifting. All piping systems must be supported.
CAUTION:
BEFORE THE STRAINER IS CYCLED, all dirt, sand grit or
other material shall be fl ushed from the system. This is to prevent scarring of
internal components.
WARNING:
System should not be operated or fl ushed out at fl ow velocities
greater than 5 feet per second
.
NOT FOR USE WITH COMPRESSED AIR OR GAS
WARNING: Do not use compressed air or gas to test any PVC or CPVC
thermoplastic piping product or system, and do not use devices propelled
by compressed air or gas to clear the systems. These practices may result
in explosive fragmentation of system piping and components causing bodily
injury or death.
All air must be bled from the system during the initial fl uid fi ll. Pressure testing
of the system must not be made until all solvent cement joints have properly
cured. Initial pressure testing must be made at approximately 10% of the
system hydrostatic pressure rating to identify potential problems prior to
testing at higher pressures.
Read all applicable instructions and procedures thoroughly before starting.
Suitability of the intended service application must be determined prior to
installation. Please review "Material Considerations in Application and
System Design", in the Materials section of Spears
VALVE PRODUCT GUIDE & ENGINEERING SPECIFICATIONS, V-4, for
important additional considerations related to valve installations. Plastic
piping systems must be engineered, installed, operated and maintained
in accordance with accepted standards and procedures for plastic piping
systems. It is absolutely necessary that all design, installation, operation
and maintenance personnel be trained in proper handling, installation
requirements and precautions for installation and use of plastic piping
systems before starting
SPEARS
MANUFACTURING COMPANY
®
CORPORATE OFFICE
15853 Olden Street, Sylmar, CA 91342
PO Box 9203, Sylmar, CA 91392
(818) 364-1611 • www.spearsmfg.com
© Copyright 2007 Spears
Manufacturing Company.
®
Printed in the United States of America 08/07.
THERMOPLASTIC
® '
All Rights Reserved.
YS-3A-0906
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