DeltaSol
®
BS Pro
© RESOL 06250 deltasol_bs_pr
o.monen.ind
d
|
22
5.1Various:
Pump starts for a short moment, switches-on/off
reapeatedly
Is the temperature diffe-
rence at the controller
too small?
no
yes
Wrong placing of the
collector sensor?
yes
Change
∆
T
on
and
∆
T
off
accordingly.
Mount the collector sen-
sor at solar feed flow
(warmest collector out-
put); use the immersion
sleeve of the respective
collector.
Pump starts up very late and stops working soon.
The temperature difference between tank and collector
increases enormously during operation; the collector cir-
cuit cannot dissipate the heat.
Collector circuit pump
defect ?
no
yes
Heat exchanger calcified?
yes
Repair / Replace
Decalification
no
Heat exchanger plugged?
yes
no
Cleaning
Heat exchanger too
small?
yes
New calculation of the
dimension.
no
Plausibility control of the
option tube collector spe-
cial function
Change
∆
T
on
and
∆
Toff
accordingly.
Switch-on-temperatu-
re difference
∆
T
on
too
large?
no
yes
Collector sensor un favour-
able placed (e.g. contact
sensor instead of immersion
sleeve sensor?
o.k.
no
Pump is overheated, but no heat transfer from collector
to the tank, feed flow and return flow are equally warm,
possibly also bubble in the tubes
Exhaust the system; incre-
ase system pressure to at
least static primary pres-
sure plus 0,5 bar; if neces-
sary continue to increase,
switch the pump on and
off for a short time
Air in the system?
no
yes
Is the collector circuit
blocked at the dirt trap?
yes
Clean the dirt trap
If necessary activate tube
collector function.
yes
o.k.