Service Procedures - Trane RTWD Installation Operation & Maintenance

Service and Maintenance

Service Procedures

Cleaning the Condenser
(RTWD Only)
CAUTION
Proper Water Treatment!
The use of untreated or improperly treated water in a
RTWD may result in scaling, erosion, corrosion, algae or
slime. It is recommended that the services of a qualifi ed
water treatment specialist be engaged to determine what
water treatment, if any, is required. The Trane Company
assumes no responsibility for equipment failures which
result from untreated or improperly treated water, saline
or brackish water.
At 65°C condensing leaving water temperature and
above, it is mandatory to have condensor equipped with
CuNi tubes.
Condenser tube fouling is suspect when the "approach"
temperature (i.e., the difference between the refrigerant
condensing temperature and the leaving condenser
water temperature) is higher than predicted.
Standard water applications will operate with less than a
5.5°C approach. If the approach exceeds 5.5°C cleaning
the condenser tubes is recommended.
Note: Glycol in the water system may as much as double
the standard approach.
If the annual condenser tube inspection indicates that
the tubes are fouled, 2 cleaning methods can be used to
rid the tubes of contaminants.The methods are:
Mechanical Cleaning Procedure
Mechanical tube cleaning method is used to remove
sludge and loose material from smooth-bore condenser
tubes.
Table 27 - Waterbox Removal Procedure - Method 1
Size
060, 070, 080, 090 100, 110, 120
130, 140
160, 180, 200
220, 250
260, 270
160, 180, 200
160, 170, 190, 200
86
WARNING
Heavy Objects!
Each of the individual cables (chains or slings) used to lift
the waterbox must be capable of supporting the entire
weight of the waterbox. The cables (chains or slings)
must be rated for overhead lifting applications with an
acceptable working load limit. Failure to properly lift
waterbox could result in death or serious injury.
WARNING
Eyebolts!
The proper use and ratings for eyebolts can be found in
ANSI/ASME standard B18.15. Maximum load rating for
eyebolts are based on a straight vertical lift in a gradually
increasing manner. Angular lifts will signifi cantly lower
maximum loads and should be avoided whenever
possible. Loads should always be applied to eyebolts in
the plane of the eye, not at some angle to this plane.
Failure to properly lift waterbox could result in death or
serious injury.
Review mechanical room limitations and determine
the safest method or methods of rigging and lifting the
waterboxes.
Waterbox Removal Procedure - Method 1
This selection applies to the units and condenser side
waterboxes shown in Table 27.
Effi ciency
HE / HSE
HE / HSE
HE
HE / HSE
HSE
PE / HSE
SE
Condenser Waterbox
Supply, Return
Supply
Supply
Supply
Supply
Supply
Supply
RLC-SVX14H-GB