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EN
ENGLISH
HKF20-IM-DE-W-UK-11-2020-Rev.0.1 | Part no. 10084531
8.3 Disassembling the circulation pump
1. Disconnect the power supply and secure it against being
switched on again.
2. Remove the front panel of the pump group (A, fig. 1).
3. Close all stop valves by turning the thermometer handle
(B, fig. 1).
4. Disassemble thermometer handles and intermediate insu-
lation (C, fig. 1).
5. Disconnect the wiring of the circulation pump.
6. Release the fastening nuts (X, fig. 2) and remove the cir-
culation pump.
Risk of heavy scalding from hot water!
• Allow the pump group to cool before
servicing.
• Do not reach into the hot medium when
emptying.
8.4 Installation of the circulation pump
1. Replace damaged or defective seals if necessary.
2. Insert the circulation pump and tighten the nuts (X, fig. 2)
(for tightening torques see “Technical data” on page 4).
3. Connect the wiring of the circulation pump.
4. Slowly open the ball valves by turning the thermometer
handle.
5. Slowly pressurize the pump assembly and vent the system
if necessary.
6. Check the pump group for leaks.
7. Restore the power supply to the pump group.
8. Disassemble the thermometer handles.
9. Install the intermediate insulation, the thermometer
handles, and the front panel.
1
A
B
C
2
X
X
