Checking The Pump; Activation; Checking The Pump; Power Supply Cord - Buderus Logamax plus GB162-80 kW Service Instructions Manual

section 88 Checking the pump;
activation
H
DANGER OF FATAL ACCIDENT
A
due to electric shock!
DAMAGE TO THE INSTALLATION!
To prevent damage, do not insert the multimeter
measuring electrodes too far into the holes of the plug-
and-socket connection.
 Switch off the power supply to the heating system, see
section 72.
 Remove the casing of the pump group as indicated in
section 73.
 Undo the pump power supply cord plug as instructed in A, [1]
and B, [1].
2
 Set the multimeter to "Measure AC voltage". Minimum mea-
suring range 250 VAC [1].
 Switch on the power supply to the heating system, see
section 79.
Logamax plus GB162-80 kW/100 kW - Subject to modifications resulting from technical improvements!
A
B
1
 Put the boiler in flue gas test mode, see section 20.
 Check that there is 120 VAC on the two contacts (L and N) of
the pump power supply cord plug while operating code [0/c/\|
is displayed or while the locking fault code [2/l/\| [2/6/6| is
displayed. The locking fault code may be displayed after
appr. 4 minutes.
 Stop the flue gas test as instructed in section 20.
 Attach the pump power supply cord plug.
 Install the casing of the pump group in reverse order of
removal.
section 89 Checking the pump;
power supply cord
H
DANGER OF FATAL ACCIDENT
due to electric shock!
 Switch off the power supply to the heating system, see
section 72.
 Open the boiler door and remove the casing of the pump
group as instructed in section 73.
 Remove the UBA 3 as instructed in section 82.
 Remove the cover from the connection tray, see section 114.
 Pull the supply cord plug from the pump as instructed in
section 88.
81-pin low-voltage connector
16-pin high-voltage connector
3
1
 Set the multimeter to "Measure resistance" [1].
 Connect the multimeter [2].
 Check the power supply cord of the pump for breaks.
The electrical resistance measured separately for every wire
Ω
must be approx. 0 [2].
 Check the power supply cord of the pump for internal short
circuiting. The electrical resistance, measured between two
random wires, must be infinite. Measure between the plug
and the black contacts (high-voltage connector pins 12, 13
and 14) on the UBA 3 mounting base [3].
 Attach the pump power supply cord plug in reverse order of
removal.
Actions
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