RIDGID metal detector User's Guide download pdf (Page 136)

Maintenance

Never immerse the Pneumatic Actuator as internal corrosion and permanent damage will

result.

Cleaning solutions

Detergents are typically alkaline solutions. Disinfectants typically contain Chlorine or Ammonia. Every

3-4 weeks it is typical to revert to acid based cleaning solution to remove any build up of lime scale on

stainless steel parts.

For specific cleaning applications please refer to the supplier of the cleaning solutions. Always

observe safety data sheet provided by the manufacturer of the cleaning solutions.

If chlorine based cleaning solutions are used on grade 304/304L stainless steel there is a risk of

corrosion appearing within a short time. A higher specification ‚marine grade‘ 316 stainless offers

more resistance to corrosion by virtue of its molybdenum content.

Cleaning will reduce/eliminate microbiological contamination to an acceptable level. Prior to a

production run a swab test should be carried out to ensure that the required level of hygiene is

maintained for food production.

Both the Standard and Harsh versions of the metal detector have been designed and tested to meet

IP69K water pressure between 1160 - 1450 psi @ between 3.69 - 4.2 gallons per minute @ 80

centigrade.

Water is sprayed @ a distance between 3.9 - 5.9 inches @ angles of 0, 30, 60 & 90 degrees for 30

seconds @ each angle. Nema equivalent is PW12 which is slightly less rigorous.

Prior to starting cleaning procedures ensure that the head control panel cover fixing screws

have been tightened to 4Nm torque to maintain the integrity of the IP69K rating for the head;

preventing ingress of water or condensation.

Belt conveyor versions

■ Isolate the electrical and pneumatic supplies to the conveyor.

■

If your conveyor system uses a harsh construction search head (white plastic liner) then hose

down or steam cleaning can be used in place of washing with mild detergents.

■ If fitted remove the reject container. Empty and wash with mild detergent.

■

Brush any loose debris off the exposed conveyor surfaces and belt scraper if fitted.

■

Wash conveyor, detector aperture, rollers, skid plate and underside of belt using mild

detergent.

■ Rinse and dry thoroughly all washed areas.

■

Inspect the conveyor belt for signs of damage.

■

Where an air regulator unit is fitted check the water build up in the trap and drain off as

described in Air Regulator Unit Maintenance.

■ Check the security of all conveyor-guarding systems.

■

Reconnect power and air systems.

■

Where interlocked guarding is fitted check the conveyor stops when the guards are opened.

■

For PU belted conveyors check the belt tension and belt tracking. Belt tensioning and tracking

is described in Setting the Belt Tension and Tracking.

■ For plastic modular belt conveyors check for belt damage. For replacing individual sections

see Plastic Modular Belt Conveyor Versions – Belt Section Replacement.

■ Check the correct operation of the reject system. Advice can be found in the Good Practice

section.

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RIDGID metal detector User's Guide Page 136

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