Figure 5-10. - Washer.
Machines equipped with automatic supply injection may also be operated manually at any time. To operate manually, however, you must turn the chart to the uncut position. When required, the Milnor washer can be supplied with an electrically operated tempering control to thermostatically control the temperature of the water for the washer.
Milnor washers, when required, can be furnished with a device to inject supplemental steam automatically when called for by the formula chart and raise the water temperature above that available from the hot-water source. This device can also be used to maintain minimum hot-water temperature in the generate enough hot water to keep up with the hot-water demand of the plant or to raise the water washer when the normal hot-water source is unable to tern perature near the boiling point.
The steps required to install the Milnor washer are as follows:
1. Install the washer on a steady, level floor, or foundation. Make sure the machine is properly bolted down to prevent vibration.
2. Assemble the water inlet valves on the rear shell of the washer. (The water inlet valve assembly and two water inlet valve strainers are shipped inside of the washer.) Assembling the inlet valves consists of plugging in a twist-lock connection to the rear of the Miltrol timer or plugging bullet connectors into rubber sleeves, as shown on the inside of the Miltrol box.
On some models, the inlet valves are permanently attached and wired to the control and do not require installation.
3. Connect the hot and cold waterlines to the hot- and cold-water inlet valves. (The hot-water valve is on the left, and the cold-water valve is on the right when you face the front of the washer.)
4. Install one of the strainers in each of the waterlines just ahead of the solenoid valve. Note that some machines have water valves that do not require strainers, so when this type of valve is used, no strainers are shipped inside of the washer cylinder.
5. Some models are furnished with a "Steam Boil" circuit to allow any or all of the washing operations at boiling temperature. In such cases, connect the steam line to the steam solenoid valve near the bottom of the washer shell at the rear of the machine.
6. To eliminate water hammer when the inlet valves close, connect the inlet valves to the water main with a short piece of rubber hose (about 15 to 24 inches long) between the water main and the upstream side of the strainers. The elasticity of the rubber hose prevents the pounding noise that might otherwise occur every time an inlet valve is closed.
7. Water inlet valves are rated to handle a maximum of 90-psi pressure. A pressure- reducing valve should be used to limit water pressure when the pressure exceeds this figure. The steam valve (when furnished) is rated to handle a maximum of 110-psi pressure, and a pressure-reducing valve should be used to limit steam pressure when it exceeds this figure.Continue Reading