Viking Pump TSM343.3: Vi-Corr Pumps - Manual (Page 2)

SECTION TSM 343.3 ISSUE F PAGE 2 OF 20
SPECIAL INFORMATION
Rotation:
Although shaft rotation determines which port is suction and which is discharge, Viking
composite pumps are designed to run in a designated direction (as indicated on pump decal).
The pump rotation cannot be reversed.
DANgER !
Before opening any viking pump liquid chamber (pumping chamber,
reservoir, relief valve adjusting cap fitting etc.) Be sure:
1. That any pressure in chamber has been completely vented through
suction or discharge lines or other appropriate openings or
connections.
2. That the driving means (motor, turbine, engine, etc.) Has been “locked
out” or made non- operational so that it cannot be started while work is
being done on pump.
3. That you know what liquid the pump has been handling and the
precautions necessary to safely handle the liquid. Obtain a material
safety data sheet (MSDS) for the liquid to be sure these precautions are
understood.
Failure to follow above listed precautionary measures may result in
serious injury or death.
Pressure Relief valves:
1. Relief valves are mounted on the head of all RP series composite pumps.
2. The RP series is a positive displacement pump and requires some sort of over pressure
protection. Without over pressure protection, the following is likely to occur: motor stalls,
drive equipment fails, a pump part breaks or the piping and/or equipment in the system
bursts. This may be an integral pressure relief valve supplied with the pump, a torque
limiting device or a rupture disk.
3. If a relief valve is not furnished on the pump, some means of over pressure protection, such
as an in line relief valve, should be provided.
4. The relief valve adjusting screw cap must always point toward the suction side of the
pump.
5. Pressure relief valves cannot be used to control flow or regulate pressure.
For additional information on pressure relief valves. Refer to Technical Service Manual
TSM000 and Engineering Service Bulletin ESB-31.
DANgER !
Running the pump in the opposite direction to the designated direction
may result in serious injury or death.