•
check the equipment for any possible vibration
•
check the installation protection and tightness of the plumbing / hoses
9. Maintenance
In normal use the WHT heaters are almost maintenance free except for the air intake filter.
To assure trouble-free working of the equipment the heaters must be checked regularly and
cleaned if necessary.
Air intake filter should be cleaned regularly and changed into new one when
necessary. Do not use the equipment without the filter!
Before maintenance:
•
close the water circulation and prevent it from opening
•
wait until the heat exchanger has cooled down
•
stop the heater appropriately remove it from the electric network
Cleansing agents
Do not use any abrasive scratchy or agents including solvents. Soft cloth and soap solution
are enough in most cases to remove the dirt.
Cleaning the equipment:
•
remove the filter unit and clean or replace it with a new one
•
clean the air intake openings and discharge baffles
•
clean the fan blade with e.g. compressed air, mild pressure.
NOTE! Do not lose the
balancing weights of the fan blade!
•
heat exchanger baffles are cleaned by blowing, vacuum-cleaning or soft brush. The
most dirt from the fan blades and baffles can be removed by soap solution
•
in case the fan motor holders and guard net have been removed they should be
reinstalled after which the free rotation of the fan blade should be checked carefully
Maintenance precautionary measures:
•
do not water the motor
•
in any case do not use high pressure water or steam
•
avoid damaging or bending the baffles and fan blades during maintenance and make
sure not to remove the balancing weights of the fan blade
Maintenance repair:
•
Always before repair unplug the equipment from electric network to prevent the
heater from turning on
•
In cold conditions empty the heat exchanger from water or fill it with e.g. glycol
Note! Emptying the heat exchanger can only be done with compressed air.
RAMIRENT
