Bronz-Glow COATING
MAINTENANCE REQUIREMENTS

General

The BG coating systems are based on a special technique with properties to achieve a long lasting nominal performance, guaranteed, worldwide. The coating systems can be applied before assembly of the machine, before installation or even years after installation. The heat-exchanging surface of the aluminium fin package determines the cooling capacity and consequently energy consumption. However pollution in between the fins can have a disastrous effect on cooling capacity. This procedure should be strictly followed in case of coil maintenance; otherwise any warranty will be void. If the coil is blocked by pollution, it is regarded as non-regular maintenance and certified BG applicator must execute the cleaning.

Maintenance

Maintenance is conducted with a High Pressure Cleaner such as a Karcher. The frequency is depending the polluting conditions of the environment, but at least half-yearly, monthly in marine and industrial environments or weekly in the case of severe salt crystal build up. BG UK should conduct non-regular cleaning. Non-regular cleaning is regarded as persistent polluting particles like dust and grease. Cleaning to include Coils, Headers & Returns and cases if requested.

 

Evaporators

The maintenance frequency for evaporators under normal circumstances is at least every half yearly. For typical harsh environments a weekly maintenance is required for removal of aggressive pollution.

 

Tools and chemicals

  1. Vacuum cleaner, explosion free, high capacity, water resistant with a soft brush top.
  2. A high-pressure cleaner 5 to 6 litres per minute.
  3. Use only an ENVIRO COIL CLEANER as cleaning agent (pH neutral detergent). This can be disposed of in the sewer system and does not affect the coating or other steel parts. Enviro Coil is to be mixed at 8:1 this will make 45 litres from 5 litres
  4. Make sure that hot water (> 40 0C) and electricity is available.
  5. Do not apply non-pH neutral cleaning agents, any warranty will be void

Bronz-Glow  MAINTENANCE PROTOCOLS Preparation of work

Before commencing the checklist of environment and safety must be checked.

Safety Check List

  • Do all the applicators wear PPE, and is it  appropriate?
  • Is the ventilation adequate?
  • Does the equipment work as specified?
  • Is the power supply safe and earth linked?
  • Are the chemicals and coatings stored in a safe place?
  • Is the packing of the chemicals in the right condition?
  • Are all material Safety Data Sheets, Product Information sheets and possible Transport Documents present?
  • If on location check if there is special Safety Regulation valid.

Environmental Checklist

  • Is there any special requirement for sewer wastage water?
  • Are any other chemicals present which may cause a chemical reaction?
  • Are all necessary items present preventing the chemicals and coatings from entering the environment as mentioned in the MSDS?

Cleaning Procedure

1
Demount fans and grills, disconnect the electronic wires from the fans and protect them from being damaged. Store the Grills and fans at a place where no damage can come to them.
2
Put a soft brush cap at the tip of the vacuum cleaner.
3
Move the tip lightly along the fin pack with the brush on the coil in between the tube rows until all lose dirt particles are removed.
4
If necessary repeat at the outlet side.
5
The Enviro Coil detergent is applied for cleaning the coil. The lance is put straight to the coil surface. Maximum pressure of four bar and moved row by row in between the rows, app. 10 cm or 4 inches from the surface at a speed of one meter per second. If ready, repeat, but from the other side. Keep the lance straight to prevent fins from bending.
6
Remount Grills and fans; dispose of all left over material meeting the local waste procedures.

IF YOU FOLLOW THE BASIC GUIDELINES the fins will not bend:

Never use more pressure than 4 bar

Always follow the direction of the fins

Move smoothly up and down and use at least 5ltrs per sqm

Always start cleaning from the inside to prevent fixing of dirt in between the fins

If the cleaning is executed in the right way the soap comes out of the other side of the coil.
ALWAYS CLEAN FROM THE INSIDE, to prevent pushing dirt deeper into the coil.
 
Clean also from the outside. It is very handy to have an extension of the pistol for easy access, if you have to clean from the inside of the machine through the fan openings.

If executed the right way, the water pours out at the other side like a small waterfall.

REMEMBER TO KEEP THE LANCE STRAIGHT TO PREVENT THE FINS FROM BENDING.

The end result of the BG application is determining the quality of the cleaning process.

If you do not feel confident with the end result, please repeat.

Certificate of Coating
Sample Warranty
Safe Contractor ISO 9001 ISO 14001 CPD CIBSE Approved Aqua Aero