803
Thermo H plus
8 Repairs
8.2.2 Hood removal/installation
Removing the hood provides access to the following
components for maintenance, inspection and repair
purposes:
– Small distribution board (load contactor AC/DC)
– Heating cartridges
– HVIL contact
Removal
1. Establish voltage-free state of the heater and secure
it for duration of the work (
Observe
!
).
2. Loosen screws (19,
).
NOTE:
The screws remain in the hood.
3. Remove hood (1) with stabilizer (2) from heater.
Installation
) onto the small distribution
board (7).
2. Place hood (1) in assembly position, turn in the
screws (19) and tighten them.
3. Restore power supply.
4. Perform functional test.
8.2.3 Housing removal/installation (incl. cable
connections)
Removal
1. Disconnect all cables from the vehicle electrical
system to the heater.
2. Remove hood (see
).
3. Disconnect cables connected to the small distribution
) by loosening the appropriate
connections.
NOTE:
For connections to be disconnected, refer to wiring
diagrams in Chapter
, depending on the heater version.
Compare the heater ident. number under the wiring
diagram with that on the model plate of your heater.
4. Remove the cable ties that bundle the single cables.
5. Disconnect temperature guards plug (23) from
connection piece (22) of temperature guards.
6. Loosen grounding screw (8) and remove it with was
-
her (9), serrated washer (10) and vehicle grounding
cable lug.
7. Remove nuts (16) and washers (15).
NOTE:
During the next step pay attention that the cables are not
jammed or are still connected. “Danger of damage“.
8. Remove housing (12) from heater.
Installation
1. Position housing (12) over the small distribution board
onto the heater and then secure it using screws (24,
), washers (15), serrated washers (14) and
nuts (16).
2. Screw grounding screw (8) with washer (9), serrated
washer (10) and vehicle grounding cable lug into the
housing (12) and tighten as required.
3. Install connection piece (22) of temperature guards
onto the housing (12) if necessary.
4. Plug the temperature guards plug (23) into the
connection piece (22) of temperature guards (note the
snap-in noise).
5. Hook-up the supply cables to the corresponding termi
-
nals of the small distribution board (7) and tighten
screws as required.
NOTE:
For connections to be established, refer to wiring
, depending on the heater version.
Compare the heater ident. number under the wiring
diagram with that on the model plate of your heater.
6. Check the wiring again using the wiring diagram (see
chapter 6).
7. Bundle single wires using cable ties.
8. Install hood (see
).
9. Connect all supply cables to the vehicle electrical
system, fix them if required.
8.2.4 Small distribution board removal/
installation
NOTE:
For loosening and connecting of cables to WAGO
®
termi
-
nals a special actuation tool is required. Learn more on
the manufacturer's website regarding its proper handling.
Fig. 802
1 3
2
Loosen wire: 1 - 2 - 3
Actuation tool
Wire
Summary of Contents for Thermo H 160
Page 47: ...memos...
