Azbil HLS Series User Manual

Contents

Azbil HLS Series User Manual Manual pdf 9 page image

2-1Chapter 2. Installation2-1. Maximum lifting loads of eyeboltsThe diaphragm case has a pair of lifting eyebolts. These eyebolts primarily are for lifting theactuator alone. When using the eyebolts for other purposes (such as lifting an actuator bedto its valve body or other components), note that the allowable maxi.mum lifting loads of theeyebolts are as shown in the following table.Table 2-1. Maximum lifting loads of eyeboltsActuator Model No. Allowable Maximum LiftingLoad of EyeboltsWeight of Actuator AlonePSA1HA2HA3HA4160 kg160 kg160 kg220 kg8 kg16 kg32 kg68 kgNote: The eyebolts may be used to lift the actuator together with its valve buy (cast globevalve) of up to pressure rating “Class 600”. When doing this, be extremely careful so thatno shock or other abnormal force is applied to the actuator or the valve body.2-1. Installing valve in process pipe(1) Before installing the valve in the process pipe, remove foreign matter (such as scales andwelding chips) from both upstream and downstream sides of the pro.cess pipe.(2) Confirm that the direction of process fluid flow conforms with that of the arrow.headmark provided on the valve body.(3) Pay attention so that the pipe connection gaskets do not extrude into the process pipeinside. Be sure to use gaskets made of material which is suitable for the pro.cess fluid. Thewelding type of valve employ no gaskets.(4) Pay attention so that no excessively large stress is conveyed from the process pipe tothe valve body. Uniformly tighten the bolts of the process pipe connection flange. Thehigh pressure type of valves have no flanges, since they are connected to the process bywelding.(5) Before connecting the air pipes to the actuator and positioner, blow the pipes to cleanthem.(6) Do not install any heating or cooling provisions on the bonnet.