What are the basic considerations when planning the installation of a food waste disposer?
Consideration must be taken to place of work in the kitchens the disposer is to be installed. Disposers can be mounted under a sink unit, in a working top or free standing in a separate cabinet. The type and volume of food waste being produced must also be estimated.
Are installation instructions included with the delivery of the disposer?
Product leaflet(s) including photos, dimensioned drawings and article descriptions for the delivered equipment as per the delivery note are included with every delivery. Electrical connection and wiring diagram, Operation instruction (in plastic) and Service Instruction are also included.
What components, required for installation, are included with disposer when delivered?
Disposers are delivered with start & stop controller with motor protector, solenoid valve and line strainer.
Are auxiliary components connected ready for installation when the disposer is delivered?
These components are already connected when they are mounted inside a free standing cabinet, Model MB and MC. Auxiliary components such as line strainer, solenoid valve and control unit with motor protector are supplied as separate components with disposers for mounting under sink mounting or table top mounting. The actual positions where these items are to be installed is not known by the disposer supplier and are therefore their installation is the responsibility of the yard. The connections at contactor are made after the contactor has been mounted in position. The disposer is however supplied with a 2m length of cable connected at the motor terminals.
Further information is given in the installation instruction included with every delivered disposer.
What installation material is not included with disposer when delivered?
Electrical connection terminal / Mains switch, flexible hose, ½", back-flower preventer, and water trap are required and can be ordered from DISPOSER.
Does the disposer meet the requirements for CE approval?
To comply with EU Machine Directive, the BASIC disposer must be fitted with an appropriate assembly. These include ATF, ATV, BS, HK, and MI. MB- and MC-cabinet disposers are delivered with ready made and approved assembly from factory.
Do disposers in the 500 EXCELLENT Series meet with the requirement of MARPOL?
Det Norske Veritas (DNV) Approval for compliance of IMO MARPOL 73/78 ANNEX V for disposal of ground waste at sea applies to all disposers in the 500 EXCELLENT Series.
§ Regulation 5, Disposal of garbage within special areas, (2), c:"Such comminute or ground garbage shall be capable of passing through a screen with openings no greater that 25mm". (Page 362 - 363).
What if food waste jams the rotary shredder?
If the disposer stops or does not start, it could be because waste has jammed between the stationary and rotary shredder. A humming sound may be heard from motor and/or the motor protector disconnects the control circuit when it is jammed. A jam release wrench is used to dislodge the jammed waste material.
What is a jam release wrench?
The jam release wrench which is delivered together with the disposer is placed on the centre nut of the rotary shredder and then rotated back and forth until the cause of jamming is freed. See Operation Instructions for further details.
What is a cutlery trap and feeder?
To prevent cutlery and similar non-grindable objects from being flushed into the disposer, a cutlery trap is fitted into the inlet to ATF-, ATV- and BS-models. The cutlery trap does not completely cover the inlet but has slots that allow water to flush through when grinding. A rubber spade is attached to the axel of the cutlery trap to enable it to be used to scrape waste into the grinding unit.
Which size of disposer can be hung without supporting legs?
Models having a motor power up to and including 1.1 kW can in most cases be hung vertically under a sink for example. These models are supplied without legs as standard. Models having a motor power of 1.5 kW or more are supplied with 3 legs which are screwed to the bottom of the disposer. The 3 legs are adjusted to give a proper support against the floor.
What if there is a possibility that the disposer can rotate in the assembly?
The disposer must then be fixed with a torque protection bar fitted to the wall. See Installation Instruction.
There is a danger that the operator unintentionally puts his/her hand inside the grinding unit while the motor is still running. Is there a protection cover?
The assembly must include some kind of protection cover connected which activates a limit switch if the opening into the grinding unit is greater than 90mm. When the protection cover is raised the limit switch must break the control circuit and the disposer must stop immediately. Limit switches are included on HK- and MI- assemblies. MB and MC free standing cabinets have also limit switches mounted to the cover.
INSTALLATION OF FLUSHING WATER AND DRAINAGE
How much water is used with the disposer?
Between 12 - 20 l/min. Water is mainly used for transporting the ground food waste away from the kitchen (or galley). The amount of water to do this depends upon the distance, the slope and bends in the drainage piping and the type of food waste being transported. The optimal amount of water required for transport is found by adjusting the flushing water tap.
What is the diameter of the flushing water pipe?
A free flow of flushing water is essential for the operation of the disposer. Therefore the incoming water pipe (incl. accessories in the piping system such as vacuum valve, cut-off valve etc.) must have the same dimension as the connection to the disposer assembly, i.e. ½".
Flushing nozzle or flush pipe with air gap to sink, which is best?
In some countries flushing nozzle are not permitted even if a vacuum (back flow) valve is fitted into the water pipe. When a flushing nozzle is fitted in a sink / washing line, the nozzle is positioned as high up as possible and above the spillway. Place the flushing nozzle or pipe as far from the inlet to the disposer as possible so as to give the largest area for flushing without splash from the bottom of for example the sink basin.
What is a vacuum valve (back-flow preventer)?
When a flushing nozzle is fitted in a sink, washing line or other type of assembly, a vacuum valve must be installed at the top of a lyre-shaped incoming water pipe above the sink assembly. See Installation Instruction. The vacuum valve prevents re-suction during a possible overflow in the sink. The vacuum valve is not included as standard delivery. No vacuum valve is necessary when a flush pipe with air gap to sink, washing line or other type of assembly, is fitted.
Should a reinforced flexible hose be connected between the disposer and flushing water supply?
A reinforced flexible hose ½" should be fitted between the incoming water pipe mounted on the wall and the connection for flushing water on the disposer assembly. The hose absorbs the compressive push in the pipe when the flushing water is turned on, and absorbs any small vibrations which may occur during the grinding process of the disposer. The reinforced flexible hose is not included as standard with the disposer but is available as an option from Disposer. The distance between the water connections on the wall and the disposer must be given when ordering.
How is the flushing water regulated?
A solenoid valve connected into the flushing water pipe opens the flow of water to a nozzle or flush pipe with air gap when the control circuit is activated by pressing start button. The solenoid coil has therefore the same voltage as the control voltage of the disposer. When the operation of the disposer is completed and the stop button is pressed then the solenoid valve closes and no water flushes through the disposer.
Can the time and sequence for the flushing water be regulated?
Timer control units are available for various sequences of running the disposer and the flushing water. See for example product sheet TIM-00-01-01 - two timers regulate the running time of the motor and the flushing water. The operation is started by pressing the start button. Initially, the motor and the flushing water run simultaneously for a pre-set time after which the motor stops. The flushing water continues to run after the motor has stopped for a further pre-set period.. These timer units are supplied upon request.
What is the size of the waste water outlet from the disposer?
For all models having a motor power under 2.2 kW the size is 2", and for all models having a motor power of 2.2 kW or more the size is 2 ½". The water trap and the drain pipe must have the same dimension as the outlet of the disposer, in order to allow the free flow of waste water from the disposer. Larger dimensions than those given above should be avoided as this would reduce the speed of the waste water flowing from the disposer.
What factors should be considered before installing the waste water drain?
a) The depth of the water trap shall be as small as possible in order to obtain the best possible flow with the largest amounts of food waste. The depth of water trap must also be approximately 50 mm.
b) The water trap and all bends in the drain pipe must be drawn without sharp bends and curves according to local standards.
c) The level difference must be at least equal to the inner drain pipe diameter, i.e. 2" for disposer models having a motor power under 2.2 kW, and 2 ½" for models having a motor power of 2.2 kW or more.
d) The installation of horizontal drain pipes must be avoided at all times. Normally, the slope of the drain pipe must not be less than 2:100. However, when, for example, the flow of food waste is large and/or the distance from the disposer to the floor drain is great, a slope of not less than 5:100 should be maintained.
Water traps are available from Disperator as option.
See Installation Instruction for further details.
ELECTRICAL INSTALLATION
What happens when the start button is pressed?
The coils of motor contactor and the solenoid valve are energised and providing all safety switches are closed the motor will start and the water will flush through the disposer. Regular checks must be made of all safety devises to make sure they are functioning correctly.
The motors on DISPERATOR disposers can be connected to many different supply voltages. How is that possible?
The motor windings at the motor terminal can be connected in either "Y" or "D" configuration and by so doing different supply voltages can be used. The motor windings are also constructed to withstand a broader voltage span. The supply voltage, rated current, frequency, etc for the supplied disposer is seen on the serial number plate attached to the housing. For the specified and ordered supply voltage the motor protector is correctly adjusted to the rated current when the disposer is delivered. The motor protector must never be adjusted to a greater value than the rated current.
Does the disposer rotate in a clockwise or anti-clockwise direction?
The disposer's grinding and pumping operations function correctly irrespective of the motor's rotational direction. It is therefore irrelevant in which sequence the electrical phases are connected. Refer your customer to § 5: Electrical connection, the disposer?s direction of rotation in the "Installation Instruction".
Is the motor contactor with protector supplied as one unit?
The contactor, auxiliary (start) contact and the thermal overload relay (motor protector) are never supplied as individual components. Before delivery these components are always assembled together in the control box.
Are the internal and external wiring connections made before delivery?
The internal wiring connection inside the control box and the external wiring connection for mains supply, motor cable, safety switches, the solenoid valve etc have always been made, without any problems, by the electricians on site. This is an internationally accepted procedure. Detailed electric diagrams are included in every delivery to support the work on site.
Why are the internal and external wiring connections not made before delivery?
At the request of our customers, the internal wiring connections are made at the same time as the external wiring for the mains supply, motor connection, solenoid valve etc. Time is saved because it is less complicated when no connections have already been made in the control unit.
Is the solenoid valve connected to the control unit before delivery?
The connections at contactor are made after the contactor has been mounted in position. The disposer is however supplied with a 2m length of cable connected at the motor terminals. Further information is given in the installation instruction included with every delivered disposer. The size of the motor protector is dependent upon the rated current of the motor. Instructions regarding the adjustment of the motor protector are given in the installation instruction a copy of which is attached. These principles also apply to the installation of the line strainer and solenoid valve.
500 Excellent Series