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Page 15 of 21
The factory set default schedule is suitable for most applications. However, the actual
frequency of cleaning required will depend on the environment. Two alternative filter
indicator schedules are available, and can be selected by changing the ‘jumper’ position
(marked 1, 2 or 3) on the Filter Indicator pcb.
Filter Indicator Schedule
Double-
frequency
Default
Half-
frequency
Jumper position
Inlet grille vacuum interval
60 hrs
120 hrs
240 hrs
Filter service interval
240 hrs
480 hrs
960 hrs
To access the Filter Indicator pcb to change jumper position:-
Switch off the electrical power to the Heat Pump Air Curtain.
If the left-hand plastic end cap is already fitted, remove it
from the air curtain. Unfasten the two screws as indicated.
Gently lower the left-hand end of the outlet grille, supporting
it from below. The Filter Indicator pcb is now accessible to
change the jumper position.
Once the filter indicator pcb ‘jumper’ has been re-positioned,
push the outlet grille back up into place and fasten screws.
Hand-over to End-User
Before leaving site it is important that there is a 'Hand-Over Meeting' to hand-over the
heat pump system and air curtain installation to the end user or their representative.
This should include a full and clear explanation of how the system operates and a
demonstration showing the air curtain running. Be sure to explain the Filter Indicator
Schedule, that the air inlet grilles must be regularly vacuum cleaned and the unit
serviced at regular intervals.
If the air curtain is to be operated under manual control, it is important that the end user
understands how the Thermoscreens Manual Room Control operates (see Page 13).
That the air curtain operates in FAN (Ambient) mode or in HEAT mode with a fixed
target temperature of 28°C, or less if the hard coded set point has been changed via dip
switch SW2 on the Mitsubishi Interface PCB in the air curtain (see Page 12).
If the air curtain is to be operated under the control of a BMS System or Centralised
Controller, explain all the settings and demonstrate the operation of the system. That
the air curtain should be operated in FAN (Ambient) mode or in HEAT mode with a fixed
target temperature of 28°C, or less if the hard coded set point has been changed via dip
1
2 3
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•
•
•
1
2
3
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•
•
•
1 2
3
•
•
•
•
Fixing
screws
Jumper
