During Starting; Start-Up The Heat Exchanger; Venting / Ventilation Of The Heat Exchanger; Shut-Down The Heat Exchanger - Bühler technologies BKF Guía Rápida

BKF
Be sure the filter element does not exceed the filtration capa-
city, which can occur very quickly (within minutes) during
flushing. Replace the filter element as described in chapter Re-
placing the filter element and continue flushing.
After flushing we recommend documenting the purity class
achieved through oil analysis.
After flushing the filter element must always be replaced (see
chapter Replacing the filter element).

4.2 During starting

First, check that the pump rotates counter clockwise. The dir-
ection is marked on the pump housing with M and directional
arrow.
CAUTION
Hot surface
Burning hazard
Let the device cool down before maintaining.
CAUTION
High pressure
Hazard of injury due to flung off parts or oil, environmental
hazard due to oil.
a) Before starting any maintenance or repair to the oil cir-
cuit, make sure that the device is depressurized. This ap-
plies to the locking screws as well.
b) Avoid environmental pollution (oil spills) during cleaning
or maintenance of the oil circuit.
c) Use drip pans.
Noise level
Our pump is supplied with a low noise. If the noise level in-
creases significantly check if the suction line has the right di-
mension and if the pump works in the appropriate temp/vis-
cosity range. Ask Bühler Technologies GmbH for technical ad-
vice.
CAUTION
Hazard due to high pressure of the pump
Do not exceed the nominal pressure.
Install safety valves (pressure relief valves) to pumps that
generate higher pressures.
The pumps feeding the plate heat exchanger must be
equipped with control valves. Pumps which generate pres-
sures higher than those specified for the unit must be
equipped with safety valves. The water pump must not suc-
tion air to preclude operating faults through water hammers.

4.3 Start-up the heat exchanger

NOTICE
Pressure surges should be avoided!
To avoid hydraulic shocks the pumps should be started up
against minimal opened valves. The valves in the supply and
the return lines should be opened slowly, if possible simultan-
eously.
12 Bühler Technologies GmbH

4.4 Venting / Ventilation of the heat exchanger

During the filling process the unit must be vented through
the vent valves installed in the piping. Plate heat exchangers
which are not vented to a sufficient degree do not achieve full
performance because the heating surface is covered by air.
Furthermore the corrosion risk increases when air remains in
the unit.

4.5 Shut-down the heat exchanger

The two sides should be shut-down simultaneously and
slowly. If this not possible the hot side should be shut down
first.
If the cooler is shut down for a long time it should be drained
completely and cleaned. The should be specially when there is
a danger of frost and when aggressive media are involved.

4.6 Monitoring the filter element

4.6.1 With visual / electric indicator
If the aggregate is equipped with a visual / electric indicator
(option), after cold starting you will be able to tell if contamin-
ation capacity remains or if the element needs to be replaced.
Due to the higher oil viscosity and therefore a higher pressure
drop during warm-up depending on how contaminated the
filter element is, the red button on the visual indicator will
pop out and an electric signal triggered.
Push the red button in again once the operating temperature
has been reached. If it is immediately tripped again or the
electric signal does not go out after reaching the operating
temperature, the filter element will need to be replaced at the
end of the shift.
If the contamination indicator indicates a contaminated ele-
ment during normal operation, it must be replaced no later
than at the end of the shift (approx. 8 h).
4.6.2 No contamination indicator
The filter element must be replaced after every system test
run or flushing cycle. Then follow the instructions of the sys-
tem manufacturer.
5 Maintenance
Always observe the applicable safety- and operating regula-
tions when performing any type of maintenance. Please refer
to the original operator's manual on the included CD or online
at www.buehler-technologies.com for maintenance informa-
tion.
6 Service and Repair
Please refer to the original operator's manual on the included
CD or online at www.buehler-technologies.com for a detailed
description of the unit including information on
troubleshooting and repair.
BX380003 ◦ 07/2018