Overview
Smith “GT” Series Semi-Automatic Draw-off Grease Interceptors offer the same intercepting efficiency as the Traditional manually cleaned models, but minimize the effort involved in the unsanitary and undesirable job of removing the accumulated grease manually.

The Semi-Automatic Draw-off Interceptor eliminates:
• Cover removal and
• Manually removing accumulated grease.

Since cleaning a “GT” interceptor is simple, fast and efficient, maintenance personnel will more likely follow the regular cleaning schedule. This is a distinct advantage over the Traditional units which are frequently left unattended. The Semi-Automatic Draw-off Grease Interceptors are designed for floor mount installation.

When to Use the Semi-Automatic Unit
The Semi-Automatic Draw-off Grease Interceptor is recommended for areas where a regular cleaning schedule is difficult to maintain, and when no one wants to deal with removing the accumulated grease from a Traditional Grease Interceptor. The Semi-Automatic Draw-off Grease Interceptor makes it easy for maintenance personnel to extract grease, fat, oil, or other similar line-clogging contaminants that would otherwise enter the drainage line. Like the Traditional Grease Interceptors, the Semi-Automatic Draw-off is ideal for plumbing drainage systems in any restaurant, cafeteria, hotel, school, hospital, institutional or commercial building, or food processing plant having facilities for preparing and serving food in quantity. The frequency of the draw-off cycle is determined by the use load factor of the interceptor. The cleaning cycle can be set after the unit is in operation for several weeks. By observing the amount of grease collected and the frequency of use, the operator can determine a practical cleaning cycle.

Additional Links:
Multiple Fixture Installations
Typical Single Fixture Installations
Dishwasher Installation

How the Semi-Automatic Interceptor Works
1. Unit in normal use has the line shut-off valve open and draw-off valve closed. When cleaning is required*, run a full stream of hot water through interceptor. It is preferable to have this water at 140° or higher, running for a period of at least two minutes.

2. Turn off hot water running into the interceptor and wait for a period of three to five minutes for the grease to liquefy.

3. Draw-off cycle can now be started. Close the line shut-off valve (A). 4. Open draw-off valve (B) at top of the interceptor and place a container underneath this valve. Run hot water through interceptor at a rate between 1-1/2 and 2-1/2 G.P.M.

5. After water has run into interceptor at this rate for a short period, the unit will fill. Accumulated liquefied grease will be raised into cone (C) and draw-off piping.

6. Allow accumulated liquefied grease to flow out of draw-off valve until clear water appears.

7. When clear water appears, shut off flow of hot water into interceptor, turn line shut-off valve to open position.

8. Close draw-off valve at top of interceptor.

9. Interceptor at this stage is ready again for normal use. stainless steel.