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4.1 Preventive maintenance
Introduction
Proper maintenance of the unit is necessary in order to achieve trouble-free operation.
This section contains description of the recommended maintenance.
Contractual
service
Dantherm Air Handling A/S provides contractual service agreements covering preven-
tive and/or corrective maintenance
– see section ”4.4 Service agreement”, page 57 for
further information.
CAUTION
Always disconnect the power from the MTS4-outdoor enclosure before doing any pre-
ventive maintenance!
Preventive main-
tenance, MTS4-
outdoor enclosure
Please follow this procedure to carry out the preventive maintenance, which should not
exceed 6 months:
Step
Action
1
Check if door gaskets are damaged
– exchange if necessary
2
Check and clean if necessary the door louvres
3
Check and replace if necessary the drain filters
4
Check exterior for any paint damages and cover these with original touch-up
paint to avoid any potential corrosion issue
Preventive main-
tenance, power dis-
tribution panel
Dantherm Air Handling recommends to switch all circuit breakers off an back on (if in
use) once a year. Make sure that the base station is not unintentionally affected by this.
It is recommended that the small white test button on the HPFI is activated regularly
(every 6 month) to test function. Make sure Backup is active when doing this to avoid
any unplanned downtime on the Radio base station. Recommended every 6 months:
Further the F1.34 transient protection can be damaged by a strike of lightning or similar
in the power supply. It has a replaceable cartridge that needs replacement when the
indicator in front turns red.
If a lightning or other surge voltage have hit the PDP the R1.13 transient protection
might have been damaged (and possibly saved the equipment inside). Check if the
easy replaceable blocks are okay by seeing if the window is still green.
Preventive main-
tenance, MHX 85
It is recommended to carry out preventive maintenance to the heat exchanger every 6
month. The preventive maintenance is done by visual inspection for defects mainly due
to contamination of the airways of the heat exchanger including controller and fans, and
if so cleaning of these. Normal working service life of fans is 5 years of operation.
In case of strong contamination or malfunction of the unit it is recommended to do a
swap of the unit with a replacement unit and return it to Dantherm service shop for ser-
vice.
The unit is easy removed by disconnecting the power/alarm cable and loosening the 4
M8x170 screws.
Always make sure the interface gasket is in place and undamaged when mounting the
heat exchanger.
Continued overleaf
