Clemco Enviraclean Systems M Z Series User manual

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TS OM535 Date of Issue 13.07.04 Hodge Clemco Ltd
Auto MZ Filter Units
Owners Manual
TSOM 535 Date of Issue: 13.07.04
Hodge Clemco Ltd
Orgreave Drive, Sheffield
South Yorkshire. S13 9NR
Tel:[phone]
Fax: [phone]
Email:[e-mail]
www.hodgeclemco.co.uk
Hodge Clemco Ltd

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TS OM535 Date of Issue 13.07.04 Hodge Clemco Ltd
Installation Operation and Maintenance Instructions for Auto M Z-Series
mechanically cleaned Dust Control Units, suitable for use with
potentially explosible dusts.
Unit designation:
The product range comprises eight basic unit sizes: -
Auto M Z 7.5, -Z 15, -Z 25, -Z 30, -Z 50, -Z 60, -Z75 and Auto M Z 90.
Exhaust ventilation fans, ranging from 0.75kW to 15.0kW, may be fitted, with the kW
rating added to the unit designation thus: - for example Auto M Z 25/7.5.
Description of Unit and its intended use.
The Auto M Z Series is a range of robust, self contained mechanically cleaned dust filter /
collector units. It is designed to extract dust laden air from non-continuous processes, that
is, so that the fan can be temporarily stopped from time to time to allow the mechanical
cleaning to operate.
The unit may also be supplied without hopper, for direct fixing to a silo or container to
ventilate displaced air, either naturally or with the aid of an exhaust ventilation fan.
Main Features
1. Filter body with filter bags
2. Hopper section
3. Access door
4. Shaker frame and linkage
5. Internally mounted shaker motor
6. Electrical controller (separate
item)
7. Fan
8. Dirty air inlet
9. Cleaned air outlet from silencer
10. Top discharge air silencer *
11. Quick release dust collection bin
*Note other silencer configurations
available
10
9
5
4
1
3
11
1
2
8
7

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TS OM535 Date of Issue 13.07.04 Hodge Clemco Ltd
Shipment.
Normally the filter is delivered in two parts with a bolted joint between the filter body and
hopper. Smaller units may be manufactured and shipped as a single complete unit.
Unit assembly.
If the unit is supplied in one piece, then transport upright and lift as shown below.
Note that the silencer is
supplied loose and two eye-
bolts are fitted to the unit
before despatch Two or four
may be used for lifting.

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TS OM535 Date of Issue: 13.07.04 Hodge Clemco Ltd
Installation.
Safety note: Installation should be performed only by suitably qualified and
experienced personnel.
The unit should be positioned according to the installation drawing, ensuring that space is
allowed for access to the front and to the electrical terminal box.
Particular care should be taken when siting a filter fitted with an explosion relief panel so
that it complies with national regulations. Please also see Appendix 1 below. It must be
free to open with no obstructions. A safety exclusion zone outside the relief panel must be
established. If in doubt, please contact.
If the hopper is supplied as a separate item, lift into position with a suitable crane or forklift
onto a prepared base. If required, it may be bolted to the ground. Units fitted with
explosion panels or in exposed locations should be fixed to their foundations.
Add mastic sealant to the hopper top flange then position the filter top section complete
with fan, but with the silencer removed, using a crane or forklift truck. Refer to the
diagram above for sling angles etc.
Insert screws into the vertical joining flange.
Remove the lifting eyebolts and position the silencer (if supplied).
Ductwork connections.
Duct connections within work places must comply with current local regulations. In some
applications with explosive dust types, explosion vents or non-return dampers in the inlet
and outlet ducts may be required.
Safety note: In order to prevent unintentional access to rotating parts all duct joints up
to 1 meter from rotating elements (e.g. screw conveyor, rotary valve) should have
flanged joints or similar so that access is only possible by using tools.
Electrical connections.
Normally Auto M units are supplied with a combined fan and shaker controller.
Important: this controller must not be mounted directly onto the filter unit because of
vibration during the cleaning cycle. Typically it would be mounted on an adjacent wall.
Location
inside a
building
Location
outside,
preferred

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TS OM535 Date of Issue: 13.07.04 Hodge Clemco Ltd
The Auto M fan and shaker motors are pre-wired to a terminal box mounted on the unit.
Specific connections are shown in the circuit diagram supplied with the controller. Check
correct rotation of the fan. A symbol on the fan case indicates correct direction of rotation.
Direction of rotation of the shaker is not important. All associated electrical installations
must comply with national wiring regulations.
Operation.
First start.
Before using the Auto M for the first time, check that the installation is sound and ductwork
complete.
Start the fan and check that its operation is smooth. Measure the fan motor current and
check this against the motor full load current. If the current is too high, stop the fan
immediately, check for correct fan rotation or refer to the fault-finding section in the
Operating Instructions.
The Auto M unit may have a sliding damper on the cleaned air side, fitted to the fan or
silencer outlet. This should be set to regulate the airflow when commissioning.
Stop the fan in order to check the operation of the shaker. There should be a time delay of
approximately 2 minutes before the shaker starts, to allow the fan to stop. The shaker
should then run for approximately 8 seconds.
Normal operation.
1. Check that dustbins are not overfilled. They would normally be emptied at the end of
each operating period, when the automatic after-cleaning has finished and the dust
has settled. If the bin is fitted with a “bin-balance” connecting pipe to the filter body,
then it is essential that a plastic bin liner is fitted before use.
2. Start the fan by pressing the “start” button on the controller.
3. After use press the “clean” button on the controller. This will de-energise the fan and
start the cleaning cycle.
If in doubt, please refer to the Technical Office for assistance.
Maintenance
Safety note: All maintenance operations should be performed only by suitably
qualified and experienced personnel. Isolate electrical supply before commencing. Use
only original spare parts for repairs.
For filters with a controller not supplied by, an exact equivalent approved by should be
used. If not, then please consult or the guarantee on the product may become void.
If the filter is normally out of site of the operators....
If the dust control unit is part of a plant where the filter is normally out of sight and where a
defective filter function may lead to a dangerous situation, the operation of the filter must
be monitored by means of a differential pressure indicator located in a prominent position,
or an alarm switch, so that any malfunction can be notified immediately.

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TS OM535 Date of Issue: 13.07.04 Hodge Clemco Ltd
Filter housing. No maintenance is required other than normal occasional cleaning.
Integral fan. The built in fan requires no regular maintenance. If any vibration arises
during operation, this will probably be caused by dust deposits on the fan impeller. The fan
impeller should be cleaned and the source of the dust leakage investigated. Do not allow
persistent vibration as damage will result.
Fan and shaker motors. These motors are maintenance free. For special motors,
maintenance instructions will be supplied as appropriate.
Planned Maintenance. The Auto M Dust Control Unit and its electrical controller should
be maintained at the intervals stated, to ensure long term reliability.
Worn or damaged parts should be replaced as soon as possible, to minimise the risk of
injury or greater damage.

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TS OM535 Date of Issue: 13.07.04 Hodge Clemco Ltd
Recommended Interval: months hours
1. Empty dust collection bins Daily or as necessary
2. Check the pressure drop on manometer if fitted* Daily when unit starts
3. Check that the cleaning cycle operates Daily when unit stops.
4. Check for dust emissions from the filter or fan Daily
5. Check mechanical dust disposal features, if fitted Daily
6. Check fan for wear and corrosion 6 1000
7. Check duct connections for wear and leakage 3
500
8. Check condition of electrical connections and anti-static
earth bonding, if fitted 6
1000
9. Check motors for signs of overheating 1 or as necessary
10. Check collection bins for damage and effective sealing 6 1000
11. Inspect filter bags for damage or dust penetration 6 1000
12. Check flaps and dampers for operation and wear 6 1000
13. Check filter housing and hopper for leakage and wear 6 1000
14. Clean exterior of controller with a moist cloth 1 300
15. Check tightness of flange connections 6 1000
16. Check, clean, or replace secondary filters, if fitted 1 300
17. Check operation of the electrical controls, including safety
features 6 1000
* After an initial running-in period, the differential pressure should generally settle within
the range 500Pa (50mm) to 1250Pa (125mm).
When restarting after maintenance work, start the fan and check direction of rotation.
Run the fan for a few minutes and check filter differential pressure manometer reading, if
fitted. Reading should be less than 100 Pa (10 mm) for a new bag.
Press ”clean” button on controller and check time delay before clean starts, then duration
of clean cycle. These times should be approx. 2 minutes delay followed by 8 seconds
clean. Check than unit will re-start after this cleaning cycle, by pressing ”start” button.

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TS OM535 Date of Issue: 13.07.04 Hodge Clemco Ltd
Replacement of filter bag(s).
Safety note. Stop and isolate the plant and use suitable personal safety equipment
before performing maintenance work on the filter unit.
Removal of filter bag:
1. Open front access door and release bag from shaker frame by unhooking the
suspension grips. Let the bag fall down onto the filter frame at its base.
2. Remove the nuts and washers from the lower bag mounting frame.
3. Lift the mounting frame complete with the filter bag from the studs.
4. Lift the frame and filter bag carefully out of the filter unit.
5. Separate the frame from the bag. Clean the frame.
Check bag for abrasion, dust penetration or other damage. A faulty bag should be
replaced with a new one.
Fitting a new filter bag:
1. Fit the bag mounting frame over bag, pulling a vee-pocket through each slot.
Stretch out the bottom skirt so that it does not fold under the bag.
2. Replace the self adhesive sealing strip around the filter mounting area.

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TS OM535 Date of Issue: 13.07.04 Hodge Clemco Ltd
3. Fit the filter bag and mounting frame into the filter, over the locating studs. Ensure
bag material flange is securely trapped under the mounting frame, with the skirt not
trapped (see diagram 3 above); replace nuts and washers.
4. Thread the suspension grips through the top of each vee-pocket and hook the grips
onto the shaker frame
Replacement of the Fan Impeller (Integral fan)
1. Isolate the electrical supply.
2. Remove silencer, if fitted.
3. Disconnect the electrical cable to the motor terminal box.
4. Release the screws securing the motor mounting plate unit top.
5. Withdraw the motor/mounting plate/fan impeller assembly and lower to the
ground.
6. Remove the screw and washer at the end of the motor shaft and withdraw the fan
impeller, retaining the shaft key for re-use.
7. Re-assemble as above, but in reverse order. Ensure that motor shaft, keyway, key
and fan impeller boss are completely clean before putting these parts together.
Check again, once the fan assembly has been mounted, that the fan impeller rotates
freely without rubbing against anything. Any defects must be corrected before the fan is
put into use again.
Replacement of internally mounted shaker motor.
Removal:
1. Isolate the electrical supply.
2. Open front access door and release sufficient bag suspension grips to gain access to
shaker motor.
3. Disconnect shaker motor cable from filter unit terminal box.
4. Remove nut and washer from shaker frame pin.
5. Remove circlip from shaker motor cam and slide linkage free.
6. Release face mounting screws to remove motor from mounting bracket and withdraw
motor complete with its cable..
Before re-assembly check pivots and bearing surfaces for wear or damage. Replace if
necessary.
Replacement:
1. Fit shaker motor and pass cable back into terminal box. Re-connect cable to
terminals marked “shaker”. When fixing motor face mounting screws, apply Loctite or
similar to threads to prevent shaking loose.
2. Reassemble linkage to pin and cam, securing with nut and washer to pin and circlip
to cam.
3. Attach bag suspension grips.
4. Close and secure front access door.
Replacement of externally mounted shaker motor (optional arrangement).
Proceed generally as above but note that the shaker motor is located on a bracket on top
of the unit case. To gain access, remove the plate on the front of the bracket.

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TS OM535 Date of Issue: 13.07.04 Hodge Clemco Ltd
Fault location and suggested remedies.
Fault
Possible cause
Recommended activity
Blocked filter / low airflow
Filter not cleaned frequently
enough
No cleaning on filter “clean”
operation
Filter bags are saturated with
fine dust
Cleaning cycle after stop: Stop
the filter more frequently
/ check that cleaning does in
fact take place
Check that the emergency stop
is not activated on normal stop /
check that the electrical
connection is correct so that the
cleaning operates
Clean / replace the filter bags
Material accumulates in
filter bottom
Blocked emptying system, if
other than bin
Wet waste sticks to the walls
Air circulation in filter bottom
prevents the waste from
being transported to the
outlet opening
Check, possibly that the
emptying system works
correctly
Check that the dust collection
bin is not full
Seal filter housing
Insulate the filter and hopper
against condensation
Reduce water content of waste
Fit pre-separation section after
seeking advice from technician
The sacks or quick
release bins are not
equally filled
Natural phenomenon which
depends on the composition
of the waste
Accept this condition
The filter doors are
leaking or are blown open
The door is not closed
correctly
Internal operating pressure is
higher than specified
(positive pressure operation)
Close the door correctly
Lower the operating pressure or
reinforce filter and access door
The filtered air contains
dust
Damaged filter bag(s)
The filter bag(s) are not fitted
or sealed correctly
Wrong filter material
The waste container is
intended for use with a
plastic liner but no plastic
liner is used
Replace defective filter bag
Mount the filter bag(s) correctly
Contact technician
Use a plastic bag or disconnect
and seal the connection for the
bin balancing pipe