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A301-05-880 Issue A Original Instructions Instruction Manual EH Mechanical Booster Pumps For safe area applications...
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Note: This declaration covers all product serial numbers from the date this Declaration was signed onwards. 16.06.2015, Burgess Hill Mr Peter Meares Date and Place Senior Technical Support Manager, General Vacuum This product has been manufactured using the Edwards quality management system...
The hydrocarbon EH pumps use hydrocarbon oils, such as Edwards Ultragrade 20. Versions of the EH pumps for use with PFPE (perfluoropolyether) oils are also available for vacuum systems in which enriched oxygen or other reactive or corrosive gases are pumped.
11 kW EH4200 11 kW 11 kW Lubrication data Note: Edwards Safety Data Sheets for the oils and grease specified below are available on request. Table 6 - Lubrication data Recommended oil type Hydrocarbon pumps Ultragrade 20 PFPE pumps Fomblin YVAC 16/6...
Ensure that the correct vented filler plug is fitted in the shaft seal reservoir. If using a non-vented plug, the reservoir will be pressurised and the oil sight glass may fracture. Edwards recommend filling the shaft seal reservoir so that the oil level is at the recommended oil level as shown in Figure 8, item 2.
Connect the inlet of the EH pump to the vacuum system and connect the outlet of the EH pump to the backing pump and exhaust extraction/abatement systems, as required. Pump inlet and outlet connections are made with standard ISO flanges, Edwards trapped O-rings and (on the EH250FX pumps only) an Edwards co-seal.
EH pump may include oils, greases and seals. The pump may have overheated if it was misused, if it malfunctioned or if it was in a fire. Edwards Safety Data Sheets for fluorinated materials used in the pump are available on request: contact the supplier or Edwards.
A301-05-880 Issue A Lubricate the rear bearing (All EH250FX and EH500FX model pumps only) WARNING When removing the end cover, take note of the exact locations of the spacers and shims (Figure items 3 and 4) inside the end cover. These items must be refitted correctly in order to ensure that the rotor clearance settings remain correct.
A301-05-880 Issue A Overhaul the pump The EH pump can only be overhauled by Edwards service engineers. Contact the supplier or Edwards for advice. Figure 10 - Lubricate the rear bearing (EH250FX, EH500 and EH500FX pumps only) 1. Pump body 5.
The majority of these centres employ Service Engineers who have undergone comprehensive Edwards training courses. Order spare parts from the nearest Edwards company or distributor. When ordering, please state for each part required: Model and Item Number of the equipment ...