Circuit Board Cleaning Systems

Batch Format Aqueous Cleaning System

With Zero Discharge System

Requirements

**[General Machine Features and Capabilities:]{.underline}**

Cleaning system must be equipped with the following features:

1.  Wash solution filtration and re-use tank (15 gallons minimum)

2.  Built-in water heater

3.  Built-in drying system

4.  Built-in rinse water recycler

5.  Board rack with adjustable tines

6.  Computer controller

7.  SPC Data Logging

**[Spray System:]{.underline}**

Pumps:

Machine must be equipped with a separate wash and rinse pump.

Wash pump must be constructed of stainless steel. Wash pump must be
rated at least 3 HP and must produce at least 60 PSI of spray pressure.

Rinse pump must be constructed of stainless steel. Rinse pump must be
rated at least 3 HP and must produce at least 60 PSI of spray pressure.

**[Wash Tank:]{.underline}**

Machine must be maintain the ability to filter and re-use its wash
solution. Machine should be equipped with an internal wash-solution
recycler. The recycler must be equipped with a filtration system capable
of providing wash-solution filtration from 1 -- 20 microns.

**[Nozzles:]{.underline}**

System must provide a high-pressure spray pattern that emanates from
four sides of the cleaning chamber.

Nozzles must be removable and interchangeable. Vendor must offer a
selection of defusion patterns, flow rates, and pressure ratings.

Nozzles must be protected from clogging by a filter device.

**[Drying System:]{.underline}**

Cleaning system must be capable of drying parts / assemblies. Drying
function must be integrated and must not involve a manual transfer of
parts.

Drying system must consist of air heaters and a blower. Blower rating
must be at least 1,500 CFM to ensure thorough drying.

Drying system's heating device must consist of corrosion resistant
heaters.

Drying system's heaters must be programmable.

**[Safety Systems:]{.underline}**

Cleaning system must be manufactured for specific safety standards
recognized by UL or other listing agency and must be equipped with the
following safety devices:

1.  Water heater over-temperature shut-off device.

2.  Door-open warning device.

3.  Door open spray pump shut-off device.

4.  Chamber heater over-temperature shut-off device.

5.  Duct heater over-temperature shut-off device.

6.  Spray pump overheat shut-off device.

7.  Wash-solution holding tank low-fluid warning device.

8.  Wash-solution holding tank high-fluid shut-off device.

9.  Main power over-current shut-off device.

10. Main electrical cabinet lock.

**[Noise:]{.underline}**

Cleaning system noise must not exceed 64 dB.

**[Water Consumption:]{.underline}**

Total water consumption must not exceed six gallons per load.

**[Cycle Time:]{.underline}**

Total cycle time must not exceed 30 minutes (cleaning and drying)

**[Controls:]{.underline}**

Cleaning system's control system must be capable of storing the
parameters for the following devices:

1.  Wash Time (0 -- 20 minutes)

2.  Wash solution temperature (ambient - 170F.

3.  Quantity of rinse cycles (0 -- 50)

4.  Final cleanliness (0 -- 2,000,000 ohms)

5.  Drying Time (0 -- 60 minutes)

6.  Air temperature (ambient - 170F.

7.  Parameter memories (100 minimum)

The main controller must provide password protection to prevent
unauthorized editing or deletion of programmed parameters.

The main controller must provide historic process records of all
previous processes. All set and actual program information should be
available upon request.

Main control system must be networkable to allow remote access.

Preferred operating system is Windows 98 or higher.

**[Zero Discharge System]{.underline}**

The evaporator unit should include:

1.  All Plumbing be stainless steel.

2.  Exhaust stack be stainless steel.

3.  Interior of evaporator unit be stainless steel.

4.  Evaporator have capacity of 85 gallons

5.  Have exhaust fan

6.  Control panel be protected for outdoor usage.

7.  Have drain valve.

8.  Exterior of unit have baked on epoxy finish to protect unit against
    weather.

**[Manuals]{.underline}**

All applicable operation and maintenance manuals should be included with
all units.