69
9
Sight glass, oil level, compressor 1 and 2
qP
Filter dryer
qW
Plate condenser
qE
Plate evaporator
qR
Return temperature sensor, primary circuit (outlet)
qT
Flow temperature sensor, secondary circuit (outlet)
qZ
Flow temperature sensor, primary circuit (inlet)
qU
Return temperature sensor, secondary circuit (inlet)
qI
Sight glass, refrigerant
qO
Vibration absorber
wP
Schrader valve
wW
Immersion temperature sensor
wE
Ball shut-off valve with Schrader valve
Draining the heat pump on the primary/secondary side
Drain the heat pump at the on-site drain valve on the
primary/secondary side.
Checking the sensors
For the position of the sensors in the heat pump: See
Fig. 41 on page 68.
Connect the sensors: See separate "Connection and
wiring diagram".
Sensor
Test element
■
Outside temperature sensor
■
Secondary circuit flow temperature sensor
■
Secondary circuit return temperature sensor
■
Cooling circuit flow temperature sensor
■
Buffer temperature sensor
■
Cylinder temperature sensor
■
Immersion temperature sensor
Pt 1000
Temperature sensors type Pt 1000
1600
1500
1400
1300
1200
1100
1000
900
800
Resistance
in Ω
Temperature in °C
-50
0
50
100
150
Fig. 42
!
Please note
Measuring device may be damaged.
All sensors can be checked via the temperature
displays in the program. If a sensor still needs to
be tested directly, one of the 2 sensor connec-
tions must be separated from the control. Other-
wise the measuring device will indicate false val-
ues or can sustain damage.
Repairs
Overview of internal components, Vitocal 300-G Pro SPS
(cont.)
5837251
Maintenance
