Liebert Extreme Density Chiller XDC - Manual (Page 40)

Checklist for Liebert XDC Startup
34
4.1 System Refrigerant Charges Over 35 lb. (15.9kg) Require Additional Oil
System charges over 35 lb. (15.9kg) require additional oil charge to be added. See Figure 30 for the
amount required for various charge levels.
Once the system has been fully charged with refrigerant, use a hand pump to add the additional oil at
the suction side of the system while the system is running.
The amount of oil added by field service must be recorded on a tag attached at the tandem the amount
added along with the date it was added. This will be documented on a tag located at the tandem com-
pressor and marked “Oil Added Field Service Record.”
Figure 30 Additional oil requirements for refrigerant charge
• Do not mix polyolester (POE) and mineral-based oils.
• Do not mix oils of different viscosities.
Consult Emerson or the compressor manufacturer if questions arise.
!
CAUTION
Risk of improper compressor lubrication. Can cause compressor and refrigerant system
damage.
Failure to use oil types, viscosities and quantities recommended by the compressor
manufacturer may reduce compressor life and void the compressor warranty. See oil types
specified in Table 19.
Table 19 Compressor oil types
Compressor Type
Refrigerant Type
R-22 R-407c
Carlyle Semi-Hermetic Mineral Oil POE OIL - ISO 68 Viscosity
Copeland Scroll and Digital Scroll POE OIL - ISO 32 Viscosity
1. Use Carlyle Mineral Oil Totaline P903-2001, Witco Suniso 3GS or other Carlyle-approved oil.
2. Use Carlyle POE Totaline P903-1001, Castrol SW68 or other Carlyle-approved oil.
3. Use Copeland
® POE Oil ULTRA 22CC, Mobil EAL Arctic 22CC, Copeland brand Ultra 22 CC, Copeland brand Ultra 32 CC,
Copeland brand Ultra 32-3MAF, Mobil EAL ™ Arctic 22 CC or Uniqema RL32-3MAF or other Copeland-approved oil.
140
130
120
110
100
90
80
70
60
50
40
30
20
10
0
0 100 300 200 400
Additional Oil Required Per Circuit, Ounces
Each circuit contains ZRT250KCE Tandem
XDC160 System Refrigerant Field Charge Per Circuit, Pounds