Maintenance; Commissioning And Start Up - VENCO VHR Series Installation, Operation, & Maintenance Instruction

12. MAINTENANCE

Before all the periodic maintenance, the device is switched off and wait at least two minutes for the fan stop
working completely.
Drain Outlet once in 3 months, please check water flow from drain pipe.
Air Filters; once in 3 months, please check the filters. Please wash it or change it when necessary. Otherwise
ventilation will inefficient and energy consumption will raise.
Fans and Motors; Once every-season, please check them by opening access door. It prevents imbalance
and risk of breakdown.
Wiring and Electrical Connections; Once a year, please check the ampere.
Construction and Housing; Once a year, please check it for resistance to corrosion.
Heat Recovery Exchanger; Once in two years, check it by taking it out for preventing creation of high
pressure. Exchanger can be cleaned by using the warm water & light detergent. After cleaning, all plates
surface of exchanger should be dried
Cooling Circuit; should intervene only in cases of failure by an authorized service.

13. COMMISSIONING AND START UP

Turn off the fan before check the fan and system. During maintenance, the electrical connection of the
unit should be stopped completely. All switches and circuit breakers must be positioned to the OFF get locked
as well
Fault-finding method:
a) See the finding fault tablet find problem
b) If the reason of the problem cannot be found follow "System Control List," according to the procedure.
c) It is recommended that you contact the manufacturer whether the problem continues.
System Control List
Systematic control of items listed below will help you to identify the problem.
a) Air passing surfaces at the fan (wings, body and fan inputs) clean.
b) Fan blades and anybody damage
c) Cleaning of filters and ducts
d) Fan output connections are correctly designed and installed.
e) Ducts and the units have no leakage.
f) If the reason of the problem is still not solved, contact the manufacturer. Try to prepare the following
information will be needed for manufacturer.
a) Unit model ,type and serial number
b) Location of the unit and usage type
c) Duct details
d) If available the measurements (airflow data, motor current etc.)
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