Graymills Bed Filter OMI User Manual

Operation and maintenance instructions

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795-92645 03-13

Operation and

Maintenance Instructions

Heavy Duty

Coolant Tank/

Bed Filter/

Magnetic Separator

BFTS40 Bed Filter with 31-gallon pump/tank combination

Magnetic Separator for BFTS40

BFTS80 Bed Filter with 41-gallon pump/tank combination

Magnetic Separator for BFTS80

BFTS120 Bed Filter with 54-gallon pump/tank combination
MS120 Magnetic Separator for BFTS120

BFTS160 Bed Filter with 67-gallon pump/tank combination
MS160 Magnetic Separator for BFTS160


You will find various types of safety information on the

following pages and on the labels attached to Graymills

equipment. The following Safety Statements explain their


This is the safety alert symbol. It is used to alert you

to potential personal injury hazards. Obey all safety

messages that follow this symbol to avoid possible

injury or death.

DANGER indicates a hazardous situation

which, if not avoided, will result in death or

serious injury.

WARNING indicates a hazardous

situation which, if not avoided, could result

in death or serious injury.
CAUTION, used with the safety alert

symbol, indicates a hazardous situation

which, if not avoided, could result in minor

or moderate injury.
CAUTION, used without the safety alert

symbol, indicates a situation the could result

in damage to the equipment or components

not related to personal injury.

Never work with equipment you feel may be unsafe. Contact

your Supervisor immediately if you feel a piece of equipment is

in an unsafe condition.


The Graymills combined Coolant Tank, Bed Filter and

(optional) Magnetic Separator are designed to keep your

cutting, grinding, drilling and milling machinery operating

at peak performance. By filtering out harmful contaminants,

coolant life is greatly extended, saving both replacement and

labor costs.
Coolant flows into the diffuser tray, which separates larger

chips and milling by-products. The liquid then pours onto

the filter bed where it is sieved by the filter media. As the

contaminants accumulate and clog the filter media, the solution

rises in the filter bed until the float switch is triggered. This

starts the motor that moves the chain conveyor/filter media

along, until it is replaced by clean material. The soiled filter

media is moved to a sludge box.
The benefits are:
• Keeps the coolant clean. Reduces frequency of coolant

replacement. Reduces operating costs.

• Keeps the workpiece surface cleaner.
• Grinding wheel does not need to be dressed as often.

Increases productivity and grinding wheel life.