Maintenance; Periodic General Maintenance; General; Field Service - Trane TR-SCS Series Installation, Operation And Maintenance Manual

Maintenance

WARNING
Hazardous Service Procedures!
Failure to follow all precautions in this manual and on
the tags, stickers, and labels could result in death or
serious injury.
Technicians, in order to protect themselves from
potential electrical, mechanical, and chemical hazards,
MUST follow precautions in this manual and on the
tags, stickers, and labels, as well as the following
instructions: Unless specified otherwise, disconnect all
electrical power including remote disconnect and
discharge all energy storing devices such as capacitors
before servicing. Follow proper lockout/tagout
procedures to ensure the power can not be
inadvertently energized. When necessary to work with
live electrical components, have a qualified licensed
electrician or other individual who has been trained in
handling live electrical components perform these
tasks.

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 Trane
Product Support. Ensure your adherence to all safety
statements while performing any type of maintenance.

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.
SS-SVX006C-EN
1. Examine all wiring for signs of chafing, loose
connections or other obvious damage (quarterly).
2. Examine brackets, motor mounts and hardware for
loose or missing 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.

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.

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.

Leak Repair

When a leak is located, properly reclaim the remaining
refrigerant charge before attempting repairs. Adjacent
piping must be thoroughly cleaned by removing all paint,
dirt and oily film. Use wire brush, sandcloth or sandpaper
and wipe the area with clean, dry cloths. Protect nearby
parts from heat damage by wrapping with water-soaked
cloths

Refrigerant Piping

When replacing components within the cabinet, the
following consumable materials are recommended: When
brazing copper-to-copper connections (piping liquid line
or suction line), use a phosphorus copper brazing alloy
with 15% silver. General purpose silver brazing alloy with
45% silver is to be used for copper-to-brass or copper-to
steel.
For liquid line repairs at the drier, strainer, sight glass, or
expansion valve, use a 95% tin to 5% antimony solder with
flux. When component replacement is complete, remove
all traces of flux. After any repair, pressure check the
system, checking for leaks prior to recharging the system.

Electrical System

All electrical connections should be checked to be sure
that they are tight and properly made. Check all switches,
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