Daikin Applied (UK) Ltd.
REV A
– PAGE 9. SECTION 11 ADDED. 11/03/14
Page 14 of 37
For details of typical external fixings of ductwork etc to the unit cabinet refer to drawing
A4-500621
.
Commissioning & Testing
Pre-run Check
With the unit electrically isolated the following work should be done:
1) Although the fan section will have been factory checked prior to despatch it is
always possible for components to loosen during shipment. Therefore the section
must be inspected to ensure there are no loose components.
2) The fan impeller must be able to rotate freely by hand and be clear of all foreign
materials. Check that the pulleys / bushes are secure on shafts and that the key is
fitted. Also check the pulley alignment and belt tension. (See belt tensioning
instructions)
3) Ensure that the unit is clear of all debris. Clean out as necessary.
4) Remove all temporary restraints that are fitted inside the fan section at
Daikin
Applied (UK) Ltd
factory for transport purposes.
5) Ensure that the anti-vibration mounts and flexible connections allow the fan to move
freely and that movement is not constrained by any cabling etc.
6) Check that the pipe work to the coils is correctly connected and that the coil fins are
free from foreign matter and not damaged.
.
7) Prime all drain traps.
8) Zero the filter manometers, minihelic or magnehelic pressure gauges.
9) If all filters are already fitted then remove the secondary filters until after the initial
run. If there are no filters fitted in position it is recommended that initially only the
first stage filters be fitted where there is more than one stage of filters and that the
secondary filters only be fitted after the initial run.
The size, type and quantity of filter cells required will be stated on the General
Arrangement (GA) drawing and confirmed by a list fixed to the inside of the filter
access door.
Ensure that the filter cells are installed correctly and that the airflow arrows point the
correct way. Where applicable, ensure that side-sealing strips are fitted to prevent
air by-pass of the filters.
10) Check that all dampers are operating correctly and that they are fully open when
starting a backward curved fan.
