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WSV6 VERTICAL SERIES - IOM
WSV6 Vertical Series – IOM 59
MAINTENANCE & SERVICE
PREVENTIVE MAINTENANCE
To achieve maximum performance and service life of
equipment, a formal schedule of regular maintenance
should be established and adhered to.
All appropriate personal protection equipment should be
worn when servicing or maintaining this unit.
Personal injury can result from sharp metal edges, moving
parts, and hot or cold surfaces.
FAN
The fan should be inspected and cleaned annually in
conjunction with maintenance of the motor and bearings.
It is important to keep the fan section and motor clean and
free from obstruction to prevent imbalance, vibration, and
improper operation.
Check motor connections to ensure they are secure and in
accordance with the unit wiring diagram.
ECM motors have line voltage power applied at all times.
MAKE SURE POWER IS DISCONNECTED BEFORE
SERVICING.
FILTER
The air filter should be cleaned or replaced every 30 days
or more frequently if severe operating conditions exist.
Always replace the filter with the same type and size as
originally furnished.
COIL
Clean all heat transfer surfaces and remove all dirt, dust,
and contaminates that potentially impairs air flow using
industry accepted practices. Care should be taken not to
bend coil fin material.
CONDENSATE DRAIN PAN AND PIPE
Check and clean all dirt and debris from pan. Ensure drain
line is free flowing and unobstructed.
MAINTENANCE UPDATES
Check regularly for a current copy of the maintenance
program log, which can be found at under “product
information”.
CLEANING/FLUSHING
Before the unit is connected to the supply water, the water
circulating system must be cleaned and flushed to remove
any dirt or debris for the system.
1. Connect the supply and return water lines together in
order to bypass the unit. This will prevent dirt or debris
from getting into the system during the flushing
process.
2. Start the main water circulating pump and allow for
water to circulate in the system. Open drains at the
lowest point in the system and drain out the water
while simultaneously filling the loop with city water.
Continue to exchange the loop water with the city
water for a minimum of two hours, or until drain water
is clear. During this time, check to make sure there are
no leaks within the system.
3. Open all drains and vents to drain water system and
refill with clean water. Test the system water quality
and treat as necessary in order to bring water quality
to within requirements for the system. Water PH level
should be 7.5 to 8.5. Antifreeze may be added if
required.
4. Connect the water-source heat pump supply and
return lines, following proper installation procedures
outlined in the piping installation section. After the
installation has been checked for leaks, bring the
water-loop to the desired set point and vent any air
within the loop.
UNIT PERFORMANCE
Record performance measurements of volts, amps and
water temperature differences (both heating and cooling).
A comparison of logged data with start-up and other
annual data is useful as an indicator of general equipment
condition.
UNIT LOCKOUT
Air or water problem could cause periodic lockouts. The
lockout (shutdown) of the units is a normal protective
result. Check for dirt in the water system, water flow rates,
water temperatures, airflow rates (may be caused by dirty
filter) and air temperatures.
LABORATORY TESTING
When the unit has less than 100 operational hours and the
coils have not had sufficient time to be “seasoned”, it is
necessary to clean the coils with a mild surfactant such as
Calgon to remove the oils left by manufacturing processes.