795-92155
01/23/14
Graymills Corporation – 3705 N. Lincoln Ave. / Chicago, IL 60613 – Phone: 773.477.4100 Fax: 773.477.8673 –
4
RECOMMENDED NORMAL MAINTENANCE
Be sure electrical cord is unplugged and cleaning solution and heater coil is cool before performing any maintenance.
1. Check fluid level in unit daily.
2. Due to evaporation and drag-out, fluid should be topped off with Super Biotene
TM
cleaning solution as needed.
3. A new BIO-POUCH should be added to cleaning solution in tank reservoir every 30-40 days.
4. Inspect strainer basket daily. Remove and dispose of solid waste accumulation. To assure proper drainage rinse out vapor barrier
filter daily.
5. Check operation of liquid level control. Make sure that float switch moves freely up and down.
6. Unit is equipped with a blue temperature-sensitive label on the front of the reservoir. When solution is heated, the temperature
change will cause the label to change from blue to pink. The change will occur only at or below the liquid level, allowing the level to
be determined without having to look through the drain or remove the sink.
When control assembly is removed from reservoir, care must be taken not to damage components.
7. Inspect heating coil monthly, remove any deposits or build up with a soft wire brush.
Deposits and build up can cause premature failure of the heating coil.
8. Filter cartridge will require periodic replacement depending on the volume and types of soils involved. A significant reduction in the
flow through the flexible hose signals the need to replace the cartridge (see RECOMMENDED ANNUAL MAINTENANCE). Order
replacement cartridges, part number BIOFL1, from either your Graymills distributor or the factory.
9. After extended use, the gas spring used to assist in opening and closing the lid on model BIO436R may lose its ability to keep the
lid open. At the first sign of this, replace the gas spring immediately. Order part number 765-09631.
RECOMMENDED
ANNUAL
MAINTENANCE
Graymills recommends that the entire system be inspected and cleaned annually. To perform this maintenance:
Be sure electrical cord is unplugged and cleaning solution and heater coil is cool before performing any maintenance.
1. Remove sink drain filters and rinse.
2. Clean filter cartridge assembly:
a. Unscrew filter cartridge bowl.
b. Pour liquid from filter bowl into reservoir.
c.
Remove filter cartridge and dispose of in proper manner.
d. Remove clear plastic packaging from filter cartridge and remove BIO-POUCH from hollow center of cartridge.
e. Install new filter cartridge in the cartridge bowl.
f.
Re-attach filter cartridge bowl to filter body.
3. Unscrew sink hold downs.
4. Lift sink straight up until mounting ring clears reservoir and set to the side.
5. Lift off control assembly being careful not to damage heater, float switch or pump.
When control assembly is removed from reservoir, care must be taken not to damage components.
6. Visually inspect pump, pump inlet filter, heater float switch, and tubing for damage or wear.
7. Replace all parts as necessary. Make sure all “tie-offs” for pump, heater and float switch are still in place insuring proper separation
and alignment of these components.
8. Clean excess accumulation off heater coil with a soft wire brush.
9. Inspect surface of cleaning solution and skim to remove any oil, bio-mass or debris.
10. Pump cleaning solution into acceptable container for future reuse.
11. Rinse inside of reservoir tank with clean water.
12. Refill reservoir tank with saved solution from step 10.
13. If necessary, top-off cleaning solution with enough fresh Super Biotene
TM
cleaning solution to bring reservoir up to 30-gallon mark.
14. Add a BIO-POUCH to cleaning solution
15. Replace control assembly and sink.
16. Follow steps 8 through 14 in MACHINE INSTALLATION AND OPERATION to complete annual maintenance.
Save this manual for future training. Do not allow operation without reading and understanding these instructions.
