nection and the O ring. When installing the valve, use a
fixed spanner to prevent twisting.
4.2
Electrical connection
DANGER: Only a qualified electrician is allowed to work on
the electrical connection. Before establishing the connec-
tion, make sure that the connecting cable is dead.
Establish the electrical connection as follows:
(Fig. 7a - Fig. 7e)
Open the plug as follows: (Fig. 8)
4.3
Filling and venting
1. Fill the system
2. The pump rotor space vents automatically after a short
5 Maintenance/faults
Cleaning
Clean the outside of the pump with a slightly damp cloth
only. Do not use detergents.
Replacing the motor head
WARNING: When removing the motor head or pump, hot
fluid may spurt out under high pressure. Allow the pump to
cool down beforehand.
Close the stop valves before removing the pump
→ Page 16.
Installation and operating instructions
time in operation. This may cause noises. If necessary,
switch off and on repeatedly to accelerate the bleeding.
Dry running for short periods will not harm the pump.
English
17