Pompetravaini TRSK 2002/1, Operating Manual, Page: 25 / 32

Operating manual liquid ring vacuum pumps TRVK - TRSK
25
15 - REPAIRING AND REMOVING PUMP FROM THE INSTALLATION
Should there be the need for pump repair a knowledge is required.
FOLLOW THE SAFETY PRECAUTION MEASURES OUTLINED IN CHAPTER 2.
Before working on the pump it is important to:
- procure and wear the proper safety equipment (hard hat, safety glasses, gloves, safety shoes, etc.)
- disconnect the electrical power supply and, if required, disconnect the electrical cable from the motor
- close the isolating valves at pump inlet, outlet and service liquid
- let the pump cool down to ambient temperature if it has been handling hot fluids
- adopt safety measures if the pump has been handling hazardous liquids
- drain the pump internals of the pumped liquid through the draining connections, if necessary rinse with neutral liquid.
To remove the pump and the motor from the installation proceed as follows:
- remove bolts from pump suction and discharge flanges
- remove the coupling guard
- remove the spacer of the coupling, if there is one
- if required, remove the motor anchor bolts on the baseplate
- remove the pump anchor bolts on the baseplate
- remove the pump from the installation. Avoid damaging other system components.
After pump repairs, re-install following the steps from "Assembly and Alignment" procedures and after (see the applicable
chapters).
16 - SPARE PARTS
When ordering the pump it is good practice to also order the necessary spare parts, especially when there are no stand-
by pumps in the installation.
This will minimise unnecessary down times in the event of pump failure or routine maintenance.
It is therefore, recommended to stock the following spare parts for each pump size:
1 Impeller set / Complete shaft assembly
1 or 2 Shaft protection sleeve set
1 or 2 Bearing set
1 or 2 Mechanical seal set
1 Gasket set
1 Coupling insert set
1 Packing seal set
1 Belt set
For better parts management, the VDMA 24296 standards suggest to stock the number of parts as a function of the
number of pumps being used in the plant.
On the pump nameplate are printed pump model, year of manufacture and pump serial number. When ordering spare
parts always provide this information. Pump type, parts item number (VDMA) and description as per the pump sectional
drawing and parts list is useful information that helps to supply correct spare parts for your pump.
We recommend the use of original spares: in case this is not respected, POMPETRAVAINI declines any responsibility
for eventual damages and not correct running caused by not original spare parts.