Instruction Manual

S-6
General Precautions
CAUTION

Never operate the pump without liquid supplied to mechanical seal. Running a mechanical
seal dry, even for a few seconds, can cause seal damage and must be avoided. Physical
injury can occur if mechanical seal fails.
WARNING
Never attempt to replace packing until the driver is properly locked out and the coupling
spacer is removed.
WARNING

Dynamic seals are not allowed in an ATEX classified environment.
WARNING

DO NOT operate pump below minimum rated flows or with suction and/or discharge
valve closed. These conditions may create an explosive hazard due to vaporization of
pumpage and can quickly lead to pump failure and physical injury.
WARNING
Ensure pump is isolated from system and pressure is relieved before disassembling pump,
removing plugs, opening vent or drain valves, or disconnecting piping.
WARNING
Shutdown, Disassembly, and Reassembly:
Pump components can be heavy. Proper methods of lifting must be employed to avoid
physical injury and/or equipment damage. Steel toed shoes must be worn at all times.
WARNING
The pump may handle hazardous and/or toxic fluids. Observe proper decontamination
procedures. Proper personal protective equipment should be worn. Precautions must be
taken to prevent physical injury. Pumpage must be handled and disposed of in
conformance with applicable environmental regulations.
WARNING
Operator must be aware of pumpage and safety precautions to prevent physical injury.
WARNING

Lock out driver power to prevent accidental startup and physical injury.
CAUTION
Allow all system and pump components to cool before handling them to prevent physical
injury.
CAUTION

If pump is a Model NM3171, NM3196, 3198, 3298, V3298, SP3298, 4150, 4550, or
3107, there may be a risk of static electric discharge from plastic parts that are not
properly grounded. If pumped fluid is non-conductive, pump should be drained and
flushed with a conductive fluid under conditions that will not allow for a spark to be
released to the atmosphere.
CAUTION
Wear heavy work gloves when handling impellers as sharp edges may cause physical
injury.
CAUTION
Wear insulated gloves when using a bearing heater. Bearings will get hot and can cause
physical injury.