-SCS CONDENSER IOM MANUAL
4.0 MAINTENANCE AND REPAIRS
4.1 Periodic General Maintenance Systematic, periodic general maintenance of the condenser is
recommended for optimum system performance. General
maintenance should include, but is not limited to the following:
1. Tighten electrical connections.
2. Clean the interior of the unit.
3. Inspect the unit’s components visually.
Use copies of the Periodic General Maintenance Checklist in this manual (see Appendix A) to record periodic general
maintenance inspections. For assistance, contact STULZ Product Support. Ensure your adherence to all safety statements
while performing any type of maintenance.
CAUTION
All maintenance and/or repairs must be performed by a journeyman, refrigeration mechanic or an air conditioning technician.
WARNINGS
Turn off power to the unit at the main power disconnect switch unless you are performing tests that require power. To prevent
personal injury, stay clear of rotating components because automatic controls may start them unexpectedly. With power and
controls energized, the fans could begin operating automatically at any time.
Hazardous voltage will still be present even with the unit turned off at the controller. To isolate the unit for maintenance, always
turn off power at the main power disconnect switch prior to performing any service or repairs.
This unit employs high voltage equipment with rotating components. Exercise extreme care to avoid accidents and ensure
proper operation.
4.1.1 General
Maintenance access to the condenser is through the removable fan assembly panel on top of the unit. Examine the areas
around the air inlet and outlet grills, fans, motors and coils. Use a vacuum cleaner with a soft bristle brush to clean dirt from
components.
Clean the coil of all debris that will inhibit airflow. This can be done
with a vacuum cleaner, soft brush and compressed air or a mild,
neutral PH detergent may be used if needed. Chemical coil
cleaners not specifically formulated for micro-channel coils are
not recommended.
Check for bent or damaged coil fins and repair as necessary. On
outdoor units, do not permit snow to accumulate on or around the
unit in the winter. Check all refrigerant lines and capillaries for
vibration isolation and support as necessary. Check all refrigerant
lines for signs of leaks.
1. Ex
amine all wiring for signs of chafing, loose connections or other
obvious damage (quarterly).
2. Examine brackets, motor mounts and hardware for loose
or
m
issing parts or other damage (quarterly).
3. Clean accumulations of dust and dirt from all interior and exterior
surfaces (quarterly).
NOTE: Fan motors have permanently sealed bearings, therefore, no
lubrication is required.
4.2 Field Service
It may be necessary to perform repairs on the refrigeration
system. If field repairs are necessary, the following
procedures apply:
NOTE: Do not attempt to make repairs without the proper
tools.
4.2.1 Leak Detection
Several methods can be used to detect a leak in the
refrigeration system. The most modern and easiest method
is to use an electronic leak detector. Follow the
manufacturer’s directions and any leak can be quickly
located. A second method is to use soap bubbles. Apply a
solution of soapy water with a brush or sponge to the joints
and connections in the refrigerant lines. A leak in the lines
will cause bubbles to form.
4.2.2 Leak Repair
When a leak is located, properly reclaim the remaining
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