Form V372, Rev. 12
- 2 -
12/18, ECN4334
Never operate a pump with closed or blocked discharge valves. This will destroy the pump and could be
dangerous to personnel.
Safety apparel to be worn when working on or making adjustments to pumps should include:
Heavy work gloves when handling parts with sharp edges, especially impellers.
Safety glasses (with side shields) for eye protection
Steel-toed shoes for foot protection when handling parts, heavy tools, etc.
Other personal protective equipment to protect against hazardous/toxic fluids and gases.
Do not operate this equipment unless safety guards or devices are in place and properly adjusted.
Let the pump cool to ambient temperature before beginning work on it. A warm pump can contain
compartments of pressurized fluid, which may vent violently during disassembly.
Never apply heat to remove parts unless specifically directed to do so in overhaul instructions. Use of heat
may cause an explosion due to trapped fluid, resulting in severe physical injury and property damage.
Pressure may build up in the standard mechanical seals used in Vaughan pumps. Whenever checking or
maintaining the oil in the Vaughan Cartridge Seal, or the welded metal bellows seal with seal oil chamber,
make sure the pump and seal are cool to the touch. Use care when removing the oil chamber plugs and
pressure relief valve, in case any residual pressure exists. If pressure exists, the plug could become a
projectile and/or contaminated oil could spray.
As it is possible to run Vaughan Chopper and Screw pumps dry, for quality assurance or troubleshooting
reasons, it is extremely important to ensure suction and discharge connections are always properly guarded
to prevent anything (i.e. foreign objects or pump parts) from being thrown from the pump as a projectile. All
pumps must be run with suction and discharge piping in place, or blind flanges installed on suction and
discharge connections. Blind flanges should be vented to avoid pressure build-up. Note that cast rotating
parts could break if metal to metal contact occurs while the pump is running dry.
Shut pump off when adjusting fittings to avoid being sprayed with pumpage. Pumped materials may be hot,
corrosive, poisonous, infectious, or otherwise dangerous to personnel.
Pump motors are connected to high voltage. Allow only qualified electricians to service this electrical
equipment only in accordance with the latest revision of the National Electrical Code and other applicable
requirements.
Make certain all personnel are clear of equipment before operating.
This equipment may not meet explosion proof requirements for hazardous environments unless specifically
ordered for this purpose. Introducing non-explosion proof equipment into a hazardous environment as defined
by the National Electrical Code can cause a dangerous explosion.
This pump uses oil which, if spilled, can cause a slipping hazard and danger to personnel.
Keep hands, feet and clothing away from moving machinery.
Never clean, oil, adjust, or repair machinery while in motion.
Keep electrical control panel area clear to avoid to avoid hazard to personnel. If a person should trip and fall
into an open panel enclosure, serious electrical burns can result.
Keep electrical control panel doors closed except to make adjustments or repairs by a qualified electrician.
Overheated pumps can cause severe burns and injury. If overheating of pump casing occurs:
1) Shut down pump immediately.
2) Wait for pump to cool to air temperature.
3) Slowly and cautiously vent pump at drain plug.
4) Trouble shoot cause of overheating.
If there are any questions regarding the safe and proper methods for operating or servicing this
pump, please contact Vaughan Company for assistance.
