Maintenance of industrial paint cabins
Maintenance of industrial paint cabins
The experience gained in over 25 years in the maintenance of paint cabins means that AMIO Levage is able to offer a complete service tailored to surface treatment installations.
The two regions covered by the company's technicians are Brittany and Pays de Loire.
Response time for corrective maintenance is a maximum of 24 hours. As regards preventative maintenance, this is planned in conjunction with the client, who of course is able to consult their workload before fixing a date.
The various control devices required for the maintenance of paint cabins are subject to annual review and have a calibration certificate.
All technicians working on the paint cabins and tunnels have received technical training in certified centres on the operation of the propane gas, natural gas and heating oil burners, as well as "airstream" or blown gas heating systems.
The areas where AMIO Levage provides maintenance for industrial cabins are :
- Propane or natural gas burners
- Oil burners
- Airstream or blown gas heat generators
- Monitoring of flow rate of fresh and extracted air
- Static pressure
- Air velocity
- Examination of the various components of the installation
- Checking of compliance of filters compared to the original supply
- Verification of pressure loss in filters
- Verification of fan motors
- Verification of conveyor belts
- Verification of condition of turbine bearings
- Monitoring of all control and monitoring devices
- Verification of connections and control devices in the electrical cabinet
The maintenance contract proposed for paint cabins is compatible with all brands and types of industrial paint cabin and tunnels.
To ensure that installations are efficient and compliant with current standards, it is important to include some technical data regarding operations to be performed during preventative maintenance of paint booths and tunnels and their frequency :
| FILTRATION | FREQUENCY | MEASURE |
| Prefilters | 700 hours | Replace |
| Ceiling filters | 1 000 hours or once per year | Replace |
| Floor filters | 100 hours | Replace |
| Burner filter | 150 hours | Replace |
| MECHANISM | FREQUENCY | MEASURE |
| Motors | Once per year | Bearings, tightening of the frame, connections, isolation, wiring checks |
| Transmission | 300 hours | Check belt alignment, belt tension, condition of belts and pulleys, check condition of the bearings |
| Burner | 6 months |
Clean the burner |
| Ventilation ducts and conduits | Once per year | Complete cleaning |
| Fans | Once per year | Complete cleaning |
| Doors and curtains | Once per year |
Monitoring of seals |
| Electrical cabinet | Once per year |
Clean if necessary |
| Tests | At each use |
Perform complete testing in spray and then steaming positions |
Rules to follow in the maintenance of paint cabins and tunnels
Ventilation of cabins and tunnels
Clogging of dry filters and poor assembly systematically generate a loss of performance. To avoid this it is recommended that the filters are continuously monitored in order to maintain an air velocity throughout which meets the minimal requirements defined by the regulations.
To do this it is necessary to take measurements with an anemometer providing directional measurements. Its measuring range should cover at least 0.10 to 1 m/sec with an accuracy of +/- 0.05 m/sec. If ventilation is smooth, measurements every 60 seconds is correct. However, if ventilation is disparate, results obtained based on the same time as before, that is to say 60 seconds, could give different results in this time, in this case it is strongly advised to carry out these measurements over 200 seconds.
Vertically ventilated cabins
When referring to vertically ventilated cabins we must distinguish between three families of products. The first is used for cars and small vans. Cabins, which are often called tunnels, are designed to accommodate long vehicles such as lorries, buses and coaches. The last category is made up of cabins or tunnels for industrial processes such as construction of industrial and agricultural machinery, boiler works etc...
The difference between these three families of products is in the number of measuring points and positions of these inside each industrial paint cabin or tunnel.
10 measuring points are necessary, which should be distributed around the vehicle :
- 2 at the front
- 2 at the back
- 3 on the right side
- 3 on the left side
Their positions must be :
- 0.50 m from the vehicle sides
- 0.90m above the floor of the cabin
After having taken these ten measurements, the values ​​will be added together. The resulting total will then be divided by 10, which happens to be the number of measurement points. The result of this division will be the average of the measurements.
The average of the measurements must be greater than or equal to 0.4 m/sec and no measurement should be less than 0.3 m/sec
The measuring points to be distributed around the vehicle :
- 2 at the front
- 2 at the back
- measurement points will be between 1.50m and 2m on each side
Their positions must be :
- 0.50 m from the vehicle sides
- 1.50m above the floor of the cabin
The average of the measurements must be greater than or equal to 0.4 m/sec and no measurement should be less than 0.3 m/sec
The measuring points to be distributed around the vehicle :
- measurement points are spaced at a maximum of 1.50m
Their positions must be :
- 0.50m from the walls of the cabin
- 0.90m above the floor of the cabin
No measuring point must not be less than 0.3m/sec
Instead of the air coming from the ceiling as for vertical ventilation, it is pulsed horizontally from the walls of the booth. This different technology means that there are changes to the air velocity measurements.
First, measurements are taken in the empty paint cabin.
A minimum of 9 measurement points are required. They should be regularly distributed in the cabin:
- 3 along the height
- 3 along the width
The average of the measurements must be greater than or equal to 0.5 m/sec and no measurement should be less than 0.4 m/sec
The area in which the measurements are taken is:
- While the painter is working inside the cabin, the area corresponds to the movement plan in the cabin
- If the painter works in front of the opening of the cabin, the area corresponds to the opening design of the cabin