Commissioning; Filling And Purging; Setting The Pump Output; Maintenance - Dimplex UPH 120-32 PK Installation And Operating Instruction

English
8

Commissioning

8.1 Filling and purging

The system must be filled and purged with due care. The pump
rotor space is automatically purged after a short operating pe-
riod.
CAUTION!
WARNING! Danger of burns
Depending on the operating status of the pump or the system
(temperature of the medium to be pumped), the pump can
become very hot.
Touching the pump may cause burns!
The temperature at the heatsink can reach up to 70°C within
the permissible operating condition range.

8.2 Setting the pump output

8.2.1 Regulation types
If the pump is operated in the constant regulation type,
p-v, the pump output must be set based on the calculated op-

erating point. The factory setting does not correspond the
pump output required for the system. It is determined based on
the characteristic curve diagram of the selected pump type
(see product information).
8.2.2 Setting the pump output via PWM signal
When the speed is adjusted using a PWM signal, the setpoint/
actual value comparison required for the regulation is carried
out by an external controller. A signal (PWM) is sent to the
pumps from the external heating controller as a manipulated
variable.
9

Maintenance

Maintenance and repair work must only be carried out by
qualified specialists!
CAUTION!
WARNING! Danger of electric shock
It must be ensured that there are no risks resulting from
electrical energy.
Disconnect the system/pump(s) from the power source and
secure it/them against unauthorised restarting before
carrying out any maintenance or repair work.
CAUTION!
WARNING! Danger of scalding
When the medium temperatures and system pressures are
high, let the pump cool down and depressurise the system.
EN-8
p-c or

Operating point on maximum
characteristic curve
Operating point within the
controlling range
Table 8.1:
If the signal cable is disconnected from the pump (PWM set-
ting), e.g. due to a break in the cable, the pump accelerates to
the maximum speed.
452115.66.46 · FD 0004
UPH 120-32PK
p-c p-v
 
From the operating point, move to the left.
Read out the set value Hs and set the pump
to this value.
On the regulation
curve, move to the
From the operating
maximum characteris-
point, move to the
tic curve, and from
left. Read out the set
there horizontally to
value Hs and set the
the left, read out the
pump to this value.
set value Hs and set
the pump to this value.