6 safety, Safety action (1.6.3), Safety markings (1.6.1) – Flowserve WPG IDP User Manual
Page 5

WPG and WPH USER INSTRUCTIONS ENGLISH 26999969 10-12
Page 5 of 40
flowserve.com
If the conditions of service on your purchase order are 
going to be changed (for example liquid pumped, 
temperature or duty) it is requested that the user seeks 
the written agreement of Flowserve before start up. 
 
1.6 Safety
 
1.6.1 Summary of safety markings 
These User Instructions contain specific safety 
markings where non-observance of an instruction would 
cause hazards. The specific safety markings are: 
This symbol indicates electrical safety
instructions where non-compliance will involve a high 
risk to personal safety or the loss of life. 
This symbol indicates safety instructions where
non-compliance would affect personal safety and could 
result in loss of life. 
This symbol indicates “hazardous and toxic fluid”
safety instructions where non-compliance would affect 
personal safety and could result in loss of life. 
This symbol indicates safety instructions
where non-compliance will involve some risk to safe 
operation and personal safety and would damage the 
equipment or property. 
This symbol indicates explosive atmosphere zone
marking according to ATEX. It is used in safety 
instructions where non-compliance in the hazardous 
area would cause the risk of an explosion. 
This symbol is used in safety instructions to
remind not to rub non-metallic surfaces with a dry 
cloth; ensure the cloth is damp. 
It is used in safety
instructions where non-compliance in the hazardous 
area would cause the risk of an explosion. 
This sign is not a safety symbol but indicates
an important instruction in the assembly process. 
 
1.6.2 Personnel qualification and training 
All personnel involved in the operation, installation, 
inspection and maintenance of the unit must be 
qualified to carry out the work involved. If the 
personnel in question do not already possess the 
necessary knowledge and skill, appropriate training 
and instruction must be provided. If required the 
operator may commission the manufacturer/supplier 
to provide applicable training. 
 
Always coordinate repair activity with operations and 
health and safety personnel, and follow all plant 
safety requirements and applicable safety and health 
laws and regulations. 
 
1.6.3 Safety action 
This is a summary of conditions and actions to 
help prevent injury to personnel and damage to 
the environment and to equipment. For products 
used in potentially explosive atmospheres 
section 1.6.4 also applies. 
NEVER DO MAINTENANCE WORK
WHEN THE UNIT IS CONNECTED TO POWER
GUARDS MUST NOT BE REMOVED WHILE
THE PUMP IS OPERATIONAL
DRAIN THE PUMP AND ISOLATE PIPEWORK
BEFORE DISMANTLING THE PUMP 
The appropriate safety precautions should be taken 
where the pumped liquids are hazardous. 
FLUORO-ELASTOMERS (When fitted.)
When a pump has experienced temperatures over 
250 ºC (482 ºF), partial decomposition of fluoro-
elastomers (example: Viton) will occur. In this 
condition these are extremely dangerous and skin 
contact must be avoided. 
HANDLING COMPONENTS
Many precision parts have sharp corners and the 
wearing of appropriate safety gloves and equipment 
is required when handling these components. To lift 
heavy pieces above 25 kg (55 lb) use a crane 
appropriate for the mass and in accordance with 
current local regulations. 
THERMAL SHOCK
Rapid changes in the temperature of the liquid within 
the pump can cause thermal shock, which can result 
in damage or breakage of components and should be 
avoided. 
NEVER APPLY HEAT TO REMOVE IMPELLER
Trapped lubricant or vapour could cause an explosion.
HOT (and cold) PARTS
If hot or freezing components or auxiliary heating 
supplies can present a danger to operators and 
persons entering the immediate area action must be 
taken to avoid accidental contact. If complete 
protection is not possible, the machine access must 
be limited to maintenance staff only, with clear visual 
warnings and indicators to those entering the 
immediate area. Note: bearing housings must not be 
insulated and drive motors and bearings may be hot. 
