CHEMICOR
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Operating and Installation Instructions AD Chemicor AD 20 - AD 50 Metal Pneumatic Diaphragm Pumps ought to be studied before installing the pump Original Instruction

Introduction ALMATEC air-operated diaphragm pumps are constructed according to the state of the art and they are reliable. Imminent danger by operating error or misuse can lead to damages of properties and/or persons. The pumps are to be applied for the intended use and in a safety-related proper condition only. Each person working on the ALMATEC air-operated diaphragm pumps concerning installation, start-up, handling or maintenance has to read this manual completely and in an attentive way and has to follow all mentioned procedures and safety notes. General description of the machine,...

Therefore make sure, before putting the pump into operation, that the pump and the used materials of construction are suitable for the provided application and the installation site. To check this, the exact pump code is required. This code, the serial number and the year of construction are noted on the identification plates on the pump itself. Example to clarify the ALMATEC Chemicor pump code: AD 20 S E E - CD Optional equipment: BS Barrier chamber system C Stroke counting D Diaphragm monitoring E Center block in PE conductive N Ports with NPT threads R Draining system M/N1/N2/T Special...

Technical data AD 20 AD 32 AD 50 Dimensions (mm): length width height 154 150 241 203 200 325 278 270 450 Nominal port size (BSP) Air connection (BSP) 3/4” 1/4" 1 1/4" 1/4" 2” 1/2" Weight (kg) 6 13 29 Max. particle size of solids (mm) 9 12 14 Suction lift, dry (mWC): EPDM ball valves PTFE ball valves Suction lift, wet (mWC) 2 1 9 2 1,5 9 3 2 9 Max. driving and operating pressure (bar) 7 7 7 Max. operating temperature (°C) with center block in conductive PE (X) with NBR equipment 130 80 80 130 80 80 130 80 80 Theoretical displacement volume per single stroke (l) 0,1 0,34 0,98 Sound pressure...

Recommended installation Installation and operation The number in brackets, which is added to every part mentioned in the following explanations, refers to its position in the spare part list and the exploded view. In general, the pump has to be connected load free. Neglecting this causes leakage and maybe even damages. To avoid vibrations, pulsation dampers and compensators are recommended. Before connecting the pump, take the yellow blind plugs out of the suction and discharge connections as well as the air inlet [18] in the center block [16]. Use threadseal only sparingly, otherwise the...

driving air to increase the distance to the dew point of the air. Doing so, it has to be considered that the driving air temperature generally may not exceed 50°C to avoid expansion and sticking effects on the air side. This max. air temperature is a well valid when using a compressor producing warm air which is e.g. often true for truck compressors. The pressure of the driving air should be limited to the amount required to meet the performance needed. Excessive pressure increases both the air consumption and the wear of the pump. The pump is regulated by tuning the flow rate of the air....

„h If the product tends to settle, the pump has to be flushed regularly. For larger solids a filter has to be installed in the suction line. „h In case of delivery of hot liquids the wetted pump must not standstill for a longer time, because it could lead to temporary leaks in the valve area and to a blockade of the air control system. „h The relevant effective security advises have to be respected. „h Pools of liquid which appear in the near outer area of the pump have to be inspected on danger potential, if necessary safety measures are to be taken. „h Chemical and biological reactions in...

A general aspect of lower temperatures is, that below 0°C cold-brittling of the elastomers used within the pumps can results in accelerated wear. Regarding the housing materials, please note that PE - other than PP - keeps its mechanical strengths at low temperatures and PTFE keeps mechanically stable as well for an extended temperature range. ALMATEC pumps can therefore be operated safely as well within low-temperature installations: However, with liquids below 0°C accelerated wear of internal parts has to be accepted. Moreover, freezing, bogging or crystallisation of the fluid pumped must...

For pumps with back flushing system (optional equipment code R) only: Take out the locking handle of the black flushing system [30]; draw off the pressure plate and the outer O-Ring and take out the ball lifter from inside the side housings [1]; withdraw inner O-ring. Pull the other diaphragm [14] together with the shaft [13] out of the center block [16]. Remove the center block [16] by gently pulling apart. Screw one diaphragm [14] counterclockwise off the shaft [13]. Screw out the set screws, shaft [13a]. Remove both parts of the shaft piston rings [17] from their grooves carefully (do...

Hints and tips for reassembly The re-assembly of the components is principally carried out vice-versa to the dismantling. Here are some additional references. For the installation of the PERSWING P air control system, first screw in one end cap flushly into the center block [16]. Insert one of the six O-rings, air-valve housing [24] into the end cap from the inside. Moisture the four O-rings [24] of the air-valve housing with a bit of water and push the housing into the center block [16] using the mounting tool. Take care that it slips in softly. Do never insert the housing violently with a...

Troubleshooting Malfunction Possible Reason Solutions/Remarks pump does not operate air supply line blocked/closed muffler blocked working chambers blocked air control system defective discharge line blocked/closed open air supply clean/replace muffler remove blockage replace air valve system clean/open line pump operates unsteadily piston rings worn air control system worn diaphragm rupture air control system soiled check valve blocked icing replace piston rings replace air control system replace diaphragm, clean pump clean/replace air control system cleaning, removal of bulk particles...