Viking Gear Pump E25

Inspection & Wear Limits — Shafts

Are there any cracks or chips on the shaft surface?

Has the shaft reached its replacement limit?

Describe any issues found during inspection

Special Information — Pressure Relief Valves

Viking pumps are positive displacement pumps and must be provided with some sort of pressure protection.

This may be an inline pressure relief valve, a torque limiting device or a rupture disk.

NOTE: Pump can be operated in reverse direction for short duration at low differential pressure to clean/flush out lines.

If pump rotation is reversed during operation, pressure protection must be provided on both sides of pump.

Pressure relief valves cannot be used to control pump flow or regulate discharge pressure.

DO NOT operate the pump without a pressure relief valve in the discharge piping.

Be sure the valve is installed and set correctly.

Pressure Relief Valve Inspection

Relieve pressure from the piping system

Clean and chemically neutralize hazardous materials

Ensure safety from magnetic fields

Vent pressure from the pump chamber

Lock out driving means to prevent operation

Identify the liquid handled by the pump and necessary precautions

Close all suction and discharge valves

INSPECTION & WEAR LIMITS — BEARINGS

Inspect bearing bores and end surfaces for wear and scoring

If wear or scoring is present on the end surface of the bearing, can it be flipped to expose the undamaged face to the gear side?

Check if the bearing should be replaced based on wear and scoring on both ends or bore wear reaching replacement limit

Record the bore wear measurement

Record the end wear measurement

SAFETY INFORMATION & INSTRUCTIONS

Ensure all parts of the system are clean and free from debris

Verify all valves in the suction and discharge pipelines are fully opened

Check that all piping connecting to the pump is fully supported and correctly aligned

Confirm pump rotation is correct for the desired direction of flow

Ensure the pump is not installed in a system where it will run dry

Verify installation of pressure gauges/sensors next to the pump suction and discharge connections

Determine shaft rotation to identify suction and discharge ports