NR RT/E/C/27031 ISSUE 1 PDF

Introduction

The use of liquid concentrates in carriage washing machines offers a number of design and operating advantages which can be exploited in the design of new plant or conversion of existing plants. The principal benefits are :

a) Avoidance of the after-staining produced by exmover in hard water areas.

b) Improved finish due to the use of superior detergents in the DP10 blend.

c) Ability to select easily the optimum chemical process to suit conditions. This can lead to large savings in running costs where "detergent only" washing is sufficient for a significant proportion of stock.

d) Elimination of labour otherwise needed for chemical preparation.

e) Close control over solution strengths with less dependence on the human factor.

f) Scope for reduction in capital, maintenance and running costs.

g) Ability to adapt to revised formulations.

h) Ability to vary the proportions of acid to detergent in the final mix.

i) Ability to apply "special" treatments.

j) Possibility of remote selection of process.

k) Possibility, in future, of automatic process selection using the "transponder" vehicle identification system currently under development.

At the design planning stage consideration should be given to which of the "optional" benefits should be exploited.

Since chemicals are to be delivered and handled in concentrated form a number of disadvantages arise :

a) Potential hazards to staff.

b) Potential pollution of drainage systems.

c) Potential accident in transit.

d) Security and protection against trespass and vandalism.

e) Desirability of vehicular access to plant room.

Detailed appraisal of the above features must be made at the design planning stage. A main purpose of this code is to define standards to be maintained to protect against the potential hazards.