Special Conditions For Safe Use; Hazardous Location Usage; Servicing And Maintenance - Pressure Tech LF-792 Series Operating And Service Manual

Table of Contents

4. Special Conditions for Safe Use

Turning the hand wheel anti-clockwise (with pressure on the outlet) should be

refrained on non-venting regulators. Pressure should be gradually reduced in this case

by venting downstream of the regulator and turning the hand wheel simultaneously

anti-clockwise.

For Air Actuated Regulators: Depressurizing the air supply to the actuator bonnet

(with pressure on the outlet) should be refrained on non-venting regulators. Pressure

should be gradually reduced in this case by venting downstream of the regulator and

simultaneously reducing the air supply gradually, to the actuator bonnet.

This equipment has not been manufactured specifically for use in potentially explosive

atmospheres and as such an ignition hazard assessment has not been carried out on

this product. If the user should wish to use this product in such an environment where

there may be a potentially explosive atmosphere, then it is the responsibility of the

user to conduct an ignition hazard assessment.

The product supplied may vary from the examples covered by this manual. Should any

assistance be required then please do not hesitate to contact the office.

Servicing and maintenance work on the LF-792 regulators should only be performed

after fully reading and understanding the Operating and Servicing Manual. Due to the

compressibility of gases, the operator should not endanger himself/herself or others

by working on this regulator without prior knowledge of the Health and Safety risks

relating to handling of technical gases. Any uncertainty should be clarified with

Pressure Tech before working on the regulator.

Pressure Tech Ltd recommends the use of Krytox GPL 205, as a lubricant for O-rings

and Molykote 1000 paste for the adjusting screw, during servicing.

Prior to commencing service, please ensure that:

The equipment has been de-pressurised

The load spring has been de-compressed by turning the adjusting mechanism

fully anti-clockwise

The air actuator bonnet has been de-pressurised

Applications involving toxic, flammable or corrosive media have been fully

purged

Table of Contents