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Pneumatech Compressed air filters PMH C, PMH D, PMH G, PMH P, PMH S, PMH V, PMH WS 10-2550, PMH WS 6-1500 Instruction book Original instructions Copyright notice Any unauthorized use or copying of the contents or any part thereof is prohibited.
Instruction book Table of contents Safety precautions......................4 ........................... 4 AFETY ICONS ................... 4 AFETY PRECAUTIONS DURING INSTALLATION ....................5 AFETY PRECAUTIONS DURING OPERATION ................5 AFETY PRECAUTIONS DURING MAINTENANCE OR REPAIR ....................... 6 ISPOSAL OF USED MATERIAL Description........................7 ........................7 ENERAL DESCRIPTION ............................
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Instruction book ........................24 IMENSIONS AND WEIGHT 2920 7194 90...
Instruction book Safety precautions Safety icons Explanation Danger to life Warning Important note Safety precautions during installation 1. Install the equipment where the ambient air is cool and as clean as possible. Consult section Reference conditions and limitations. 2. During installation or any other intervention on the equipment or one of the connected machines, the machines must be stopped, de-energized and the isolating switch opened and locked before any maintenance or repair.
Instruction book Safety precautions during operation All responsibility for any damage or injury resulting from neglecting these precautions, or non-observance of the normal caution and care required for installation, operation, maintenance and repair, even if not expressly stated, will be disclaimed by the manufacturer.
Instruction book 7. Never use a light source with open flame for inspecting the interior of the device. 8. All regulating and safety devices shall be maintained with due care to ensure that they function properly. They may not be put out of action. 9.
Naming of the filters: PMH (grade)(flow)(connection)(-/indicator/gauge)(drain) Example: PMH P 476 (G1 1/4) G A is a Pneumatech Filter of the P grade with a nominal flow of 476 m³/h, a G1 1/4 connection with a pressure gauge and an automatic drain.
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Instruction book Grade Description Maximum Air flow Differential pressure Drain air inlet Indicator Gauge pressure Coalescing filters for 16 bar From • Size 1– • Size 1– Automatic general purpose inside to 2: Not 2: Not drain protection, removing solid outside available available...
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Instruction book Grade Description Maximum Air flow Differential pressure Drain air inlet Indicator Gauge pressure Condensed liquid water 16 bar From Automatic removal filter outside to drain or inside level- controlled drain The V filter does not remove methane, carbon monoxide, carbon dioxide or other toxic gases and fumes! (1) The differential pressure gauge indicates the pressure drop over the filter.
Instruction book Automatic float drain The manual drain can be used to manually discharge dust or liquid from the filter bowl. Manual drain valve Options Filter connection kit This kit allows to interconnect the filter heads if two or more filters are installed in series. Always observe the correct air flow direction.
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Instruction book Voltage-free contact A voltage-free switch, mounted in the differential pressure gauge, closes at a pressure drop of 0.35 bar (5 psi) and can be used for remote control or alarm purposes. Electronic drain 2920 7194 90...
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Instruction book The electronic drain is a zero loss, electronically operated drain valve, specially designed to drain oil condensate. A sensor senses the condensate level. If this level exceeds a preset value, the drain waits for a fixed programmed time, then a solenoid valve is activated and the condensate is discharged.
Instruction book Installation General remarks When installing the filter, keep in mind the following: • Be sure that the piping is internally clean, especially downstream of the filter. • Select the filter grade in line with the application requirements. When selecting the filter size, take care that the maximum flow capacity is not exceeded to make sure that filtration performance and filter lifetime are guaranteed.
Instruction book • Open and close isolating valves slowly, as a sudden pressure rise or pressure drop can cause irreversible damage to the filter element. Specific remarks P filter The P grade filter can be used in installations where high oil or dust loads are expected. In critical applications it is recommended to install a grade G (for oil) or a grade S (for dust) or a grade C (for oil) or a grade D (for dust) filter downstream the P filter to improve the air quality.
Instruction book S filter and D filter When the S and D filters are used with an adsorption type air dryer, install the filter downstream of the dryer. V filter To protect the activated carbon element, a V filter must always be preceded by a G and C filter. The filter should be mounted as close as possible to the point of use of the air.
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Instruction book A few examples are given in the image below. General purpose protection With grade P filter: air quality to ISO 8573-1: class 4:-:3 With grade G filter: air quality to ISO 8573-1: class 3:-:3 High quality air with reduced dew point (air quality to ISO 8573-1: class 1:4:1) General purpose protection and reduced oil concentration (air quality to ISO 8573-1: class 1:-:2)
Instruction book Components shown in above image Item Description Item Description Compressor with after cooler D filter G filter (or P filter in configuration A) Refrigerant dryer C filter Desiccant dryer V filter (for critical applications) Compressor with integrated dryer S filter VT filter Compressed air may come into direct or indirect contact with food.
Instruction book Maintenance Maintenance When maintaining the filter, keep in mind the following: • On filters with manual drain valve, open the latter at regular intervals to evacuate collected dust or liquid. • In case an automatic drain valve or a solenoid timer drain is installed, manual draining can be carried out by opening the valve counterclockwise to release collected condensate.
Instruction book 6. Remove the drain valve by unscrewing the retaining nut underneath the bowl. 7. Remove the O-ring from the filter head and clean the o-ring groove. Position a new O-ring in the filter head. 8. Reinstall the drain valve in the bowl using the retaining nut (tightening torque 3 Nm). 9.
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Instruction book Note that the indicator or gauge will not move into the red area but will stay yellow or orange during operation. The filter elements of dust filters (S, D) should be replaced after 8000 running hours or after 12 months (whichever comes first).
Instruction book Technical data Reference conditions Air inlet pressure 7 bar(e) 102 psig Air inlet temperature 20˚C 68 ˚F Ambient temperature 20˚C 68 ˚F Principal data Maximum compressed air inlet pressure Coalescing filters Coalescing filters (P-G-C) + WS: 16 (P-G-C) + WS: bar(e) 232 psig Particulate filters...
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Instruction book G filter and C filter Challenge/inlet oil concentration mg/m Initial pressure drop over filter when dry mbar Initial pressure drop over filter when saturated mbar Oil carry-over (aerosol) 0.01 mg/m Total mass efficiency >99.25 >99.9 Remark Typical Typical installati installati on (1)
Instruction book Correction factors When the actual working pressure differs from the reference pressure, multiply the nominal capacity of the filter with the corresponding correction factor to obtain the correct capacity. Operating pressure bar(e) Operating pressure psig correction 0.76 0.84 0.92 1.07 1.19...
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Instruction book Size Filter volume, Weight (kg) Shipping Shipping width Shipping head+bowl (l) length (mm) (mm) height (mm) 0.25 0.25 1020 10.5 1175 10.5 1175 11.5 1175 12.5 1300 For WS filters Size Filter Filter Filter Automatic Service dimension A dimension B dimension C Drain length D...
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Instruction book Size Filter Filter Filter Automatic Service dimension A dimension B dimension C Drain length D distance E (mm) (mm) (mm) (mm) (mm) Size Filter volume, Weight (kg) Shipping Shipping width Shipping head+bowl (l) length (mm) (mm) height (mm) 0.25 0.25 2920 7194 90...
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