Checking The Oil In The Sealing Chamber; Stationary Wet Well Installation - Wilo HC 20.1+EMU FA Instrucciones De Instalación Y Funcionamiento

en-US
6.4.2.3 Checking the oil in the sealing
chamber
+
-
Fig. 5: Sealing chamber: Check oil
6.4.3

Stationary wet well installation

22
Installation and electrical connection
+ Add the oil to the sealing chamber
- Drain the oil in the sealing chamber
‡
Pump is not built-in.
‡
Pump is not connected to the power supply.
‡
Protective equipment has been put on!
1. Place the pump upright on a firm surface.WARNING! Risk of hands being crushed.
Make sure that the pump cannot fall over or slip!
2. Place a suitable tank to collect the operating fluid.
3. Unscrew the screw plug (+).
4. Unscrew screw plug (-) and allow the operating fluid to drain out. If a shut-off ball cock
is installed on the outlet opening, open the shut-off ball cock.
5. Check operating fluid:
⇒ When the operating fluid is clear, re-use the operating fluid.
⇒ If the operating fluid is contaminated (black), pour in new operating fluid. Dispose
of operating fluids according to the local regulations!
⇒ If there are metal filings in the operating fluid, inform customer service!
6. If a shut-off ball cock is installed on the outlet opening, close the shut-off ball cock.
7. Clean the screw plug (-), replace the seal ring and screw it back in. Max. tightening
torque: 8 Nm (5.9 ft·lb)!
8. Pour the new operating fluid in through the hole for the screw plug (+).
⇒ Adhere to the information for operating fluid type and quantity! When re-using
operating fluid, the quantity must also be checked and adjusted, if necessary!
9. Clean the screw plug (+), replace the seal ring and screw it back in. Max. tightening
torque: 8 Nm (5.9 ft·lb)!
NOTICE
Pumping problems due to water level being too low
If the fluid is lowered too much, separation of the volume flow may occur. Furthermore,
air cushions may form in the hydraulic system, resulting in undesirable behavior during
operation. The minimum permissible water level must reach up to the upper edge of the
hydraulics housing!
For wet well installation the pump is installed in the fluid. For this purpose a guide system
must be installed in the pump chamber. On the pressure side, the on-site pipe system is
connected to the guide system and on the suction side to the pump. The connected pipe
system must be self-supporting. The guide system must not support the pipe system!
WILO SE 2019-01