Decommissioning Process - Cornelius QUEST ELITE 4290 Installation Manual

Table of Contents

Before carrying out this procedure, it is essential that the technician is completely familiar with the equipment and all

its detail. It is recommended good practice that all refrigerants are recovered safely. Prior to the task being carried

out, an oil and refrigerant sample shall be taken in case analysis is required prior to re-use of recovered refrigerant.

It is essential that electrical power is available for recovery-equipment use before the procedure is commenced.

Decommissioning Procedure

1) Become familiar with the equipment and its operation.

2) Isolate the system electrically by disconnecting all AC power sources.

3) Before beginning the procedure, ensure that:

Mechanical handling equipment is available, if required, for handling refrigerant cylinders;

All personal protective equipment is available and being used correctly;

The recovery process is supervised at all times by a competent person;

Recovery equipment and cylinders conform to the appropriate standards.

4) Pump down the refrigerant system, if possible. NOTE: If a vacuum is not possible, make a manifold so that refrigerant can

be removed from various parts of the system.

CAUTION:

Do not overfill cylinders (no more than 80% volume liquid charge).

Do not exceed the maximum working pressure of the cylinder, even temporarily.

CAUTION:

When the cylinders have been filled correctly and the process completed, make sure that the cylinders and the equipment

are removed from site promptly and all isolation valves on the equipment are closed off.

CAUTION:

Recovered refrigerant shall not be charged into another REFRIGERATING SYSTEM unless it has been cleaned and checked.

CAUTION:

DO NOT switch recovery system on/off near the source of flammable refrigerant that may be leaking out or may leak out

during recovery-system line connection/disconnection.

Recovery Requirements and Guidelines

When removing refrigerant from a system, either for servicing or decommissioning, it is recommended good practice that all

refrigerants are removed safely.

When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery cylinders are employed.

Ensure that the correct number of cylinders for holding the total system charge is available. All cylinders to be used are

designated for the recovered refrigerant and labeled for that refrigerant (i.e. special cylinders for the recovery of refrigerant).

Cylinders shall be complete with pressure-relief valve and associated shut-off valves in good working order. Empty recovery

cylinders are evacuated and, if possible, cooled before recovery occurs.

The recovery equipment shall be in good working order with a set of instructions concerning the equipment that is at hand and shall be

suitable for the recovery of all appropriate refrigerants including, when applicable, FLAMMABLE REFRIGERANTS. In addition, a set of

calibrated weighing scales shall be available and in good working order. Hoses shall be complete with leak-free disconnect couplings and in

good condition. Before using the recovery machine, check that it is in satisfactory working order, has been properly maintained and that

any associated electrical components are sealed to prevent ignition in the event of a refrigerant release. Consult manufacturer if in doubt.

The recovered refrigerant shall be returned to the refrigerant supplier in the correct recovery cylinder, and the relevant waste

transfer note arranged. Do not mix refrigerants in recovery units and especially not in cylinders.

QUEST ELITE 4 Flavor Installation, Service & Decommissioning Manual