Bag Filter - PPL0 pages

FLTIN REV E 3/5/97 ECR 363R

INSTALLATION, OPERATION AND MAINTENANCE INSTALLATION:

INSPECTION

Upon receipt of the bag filter, inspect it for damage that might have occurred during transit. Report any damage to the carrier immediately. >

LOCATION AND SUPPORT

The Hayward bag filter should be installed not less than 24 down stream of a Hayward strainer. The bag filter must be bolted to the floor to insure proper piping installation. A integral flange on the base of the bag filter will accept 3/4Ԕ studs. DO NOT FORGET THE O-RING. >

PIPING INSTALLATION

WARNING: METAL PIPING SHOULD INCLUDE A MINIMUM OF 20 OF PLASTIC PIPE UPSTREAM AND DOWNSTREAM OF THE FILTER VESSEL.

For installation in metal piping systems it is recommended that the Hayward flanged version FLT4202F or FLT4201F be installed. From the Hayward strainer, a 2Ԕ line is required to the inlet of the bag filter. Connect 2 line to a valve and then to the upper 2Ԕ NPTF (inlet) of the bag filter. A 2 line must be piped from the bag filter 2Ԕ NPTF bottom port (outlet) to a determined suction source (system pump suction). A 2 valve such as a Hayward Diaphragm or Butterfly valve is required on this outlet line. It is recommended that a 2Ԕ drain valve be installed on the unused bottom 2 NPT port The vent fitting must be installed on the top of the unit. A 3/8Ԕ ID tube should be attached over the barb and secured with a hose clamp on the vent fitting. This hose will be used to direct the flow from the vent fitting. The top of the vent fitting is normally plugged. This plug can be removed and replaced with a pressure gauge that measures inlet pressure to the bag filter. It is recommended that a gauge guard be installed between the filter vent and the gauge. THREADED CONNECTION: Threaded end connections are manufactured to ASTM specifications D2464-88. F437-88 and ANSI B2.1. Wrap threads of pipe with Teflon tape of 3 to 3-1/2 mil thickness. The tape should be wrapped in a clockwise direction starting at the first or second full thread. Overlap each wrap by, 1/2 the width of the tape. The wrap should be applied with sufficient tension to allow the threads of a single wrapped area to show through without cutting the tape. The wrap should continue for the full effective length of the thread. Pipe sizes 2 and greater will not benefit with more than a second wrap, due to the greater thread depth. To provide a leak proof joint, the pipe should be threaded into the end connection ԓhand tight. Using a strap wrench only . (Never use a stillson type wrench) tighten the joint an additional 1/2 to 1-1/2 turns past hand tight. Tightening beyond this point may induce excessive stress that could cause failure. Flange bolts should be tight enough to slightly compress the gasket and make a good seal, without distorting or putting excessive stress on the flanges. Suitable washers should be used between the bolt head and flange and the nut and flange. Bolts should be tightened in alternating sequence. RECOMMENDED FLANGE BOLT TORQUE FLANGE FLANGED CONNECTION: SIZE BOLT DIAMETER. TORQUE FT. LBS. >

2 5/8 15-25

NOTE: USE WELL LUBRICATED METAL BOLTS AND NUTS. USE SOFT RUBBER GASKETS. >

OPERATION:

OPERATING INFORMATION

The Hayward polypropylene bag filter is designed as an integral part of the Hayward filtration-bag filter system. Installed down stream of the Hayward strainer, the Hayward bag filter concentrates the solids, and provides convenient, economical removal of the solids from the process with very low liquid loss. Large solids are separated from the liquid with the Hayward strainer while smaller solids are accumulated by the bag filter . The bag filter concentrates the solids in a disposable bag, while clean liquid is piped back to the process. >