Assembly And Dismantling Of Parts - Ranpump RAN 3” G80-AX Operating And Maintenance Manual

6.3. Stopping the pump
Cut off the air when the pump is not working.
WARNING !
The equipment stays pressurized until pressure is manually relieved.
To reduce the risk of serious injury from pressurized fluid,
accidental spray from the gun or splashing fluid, follow Pressure
Relief Procedure whenever you
6.4. Pressure relief procedure
1- Shut off the air valve. To relieve the air between the air valve and the pump, use the Air
Pressure Discharge Valve.
2- Shut off the Fluid Valve. Place a container under the Fluid Pressure Discharge Valve and open
the valve. Remove the Fluid Discharge Hose.
3- To discharge the fluid inside the pump follow the instructions below.
a- Put on proper safety equipment for the fluid you are pumping. Shut off the valve on the
fluid inlet hose if installed. Have a container ready to catch the drainage. Pull out the fluid inlet
hose from the manifold. Unravel it from the ground if fixed.
b- Before pulling out the hose from the pump put a container
under the pump. Pull it out slowly and carefully.

7.0 ASSEMBLY AND DISMANTLING OF PARTS

WARNING:
Before service and maintenance always
relieve the air and fluid pressure.
This explanation uses figures defined in part (7.0) line (12) fig.
14a.
7.1. Ball check valve repair
Tools required
- Torque wrench
- 17 mm wrench
- 15 mm wrench
7.1.1 Dismantling
NOTE: To ensure proper seating, you should change the seats with
the ball check valves.
1- Relieve the pressure in pump. Remove the hoses.
2- Dismount the pump from the ground.
3- Remove the upper elbow manifolds and bolts fixing them to
the main body using 17 mm wrench.
4- Remove the manifold o-rings, ball cages, valve balls and ball
seats from the pump cover.
5- Turn the pump over. Remove inlet manifolds. Remove the o-
rings, ball cages and and valve balls from the pump.
7.1.2. Assemblying
1- Clean all the parts and inspect for wear.
2- You can re-assemble the pump in reverse order. Check
valve balls must be placed on the cages using their own
weight.
3- If assembled differently, the pump does not work.
4- Tighten the screws applying the proper torque from the
torque chart. (Fig. 7)
14
PRESSURIZED EQUIPMENT HAZARD
 need to relieve pressure
 stop pumping check, clean or service any system equipment
Figure 11 - Check valve repair