Maintenance; Safety Information - Edwards E2M28 Instruction Manual

6. Maintenance

6.1 Safety information

WARNING:
Allow the pump to cool (so that it is at a safe temperature for skin contact) before
starting maintenance work. Make sure the pump is switched off in case the thermal
overload device restarts the pump.
WARNING:
Obey the safety instructions given below and take note of appropriate precautions.
Failure to do so can cause injury to people and damage to equipment.
CAUTION:
Never use hydrocarbon lubricants in a PFPE-prepared pump.
Note:
If the pump is PFPE-prepared, refer to
▪ A suitably trained and supervised technician must maintain the pump.
▪ Ensure that the maintenance technician is familiar with the safety procedures
which relate to the pump-oil and the products processed by the pumping-system.
▪ Isolate the pump and other components in the pumping system from the electrical
supply so that they cannot be operated accidentally.
▪ After maintenance is completed, recheck the pump rotation direction if the
electrical supply has been disconnected.
▪ Do not reuse O-rings and seals if they are damaged.
▪ The pump and its oil will be contaminated with the process chemicals that have
been pumped during operation. Ensure that the pump is decontaminated before
maintenance and that adequate precautions are taken to protect people from the
effects of dangerous substances if contamination has occurred.
▪ Leak-test the system after maintenance work is complete if connecting or
disconnecting any vacuum or exhaust joints; seal any leaks found.
▪ Do not touch or inhale the thermal breakdown products of fluorinated materials
which may be present if the pump has been heated to 260 °C and above. These
breakdown products are very dangerous. Fluorinated materials in the 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. Manufacturers Material Safety Data sheets for
fluorinated materials used in the pump are available on request: contact supplier
or us.
A37310880_V - Maintenance
PFPE-prepared EM pumps on page
Page 33
48.