User manual

Piping
Liebert
®
DS
™
90
9.2.2 Scroll and Digital Scroll—Additional Oil Requirements
System charges over 40 lb (18.1kg) per circuit may require additional oil charge to be added. See
Table 52 for the amount required for various system charge levels.
After 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 the tag marked “Oil Added Field Service
Record,” attached to each compressor. The date of oil addition must be included as well.
NOTICE
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 Table 62
for compressor oil types.
• 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.
Table 52 Additional oil required per refrigerant charge
Model
System Charge Per Circuit - lb (kg) *
40lb
(18.1kg)
60lb
(27.2kg)
80lb
(36.3kg)
100lb
(45.4kg)
120lb
(54.4kg)
140lb
(63.5kg)
160lb
(72.6kg)
180lb
(81.6kg)
200lb
(90.7kg)
Additional Oil Required Per Circuit - Ounces (Grams)
DS028
DS035
DS042
0
4
(113)
7
(198)
10
(283)
13
(369)
16
(454)
20
(567)
23
(652)
26
(737)
DS053-60Hz
7.5
(213)
15.5
(439)
23.5
(666)
31.5
(893)
39.5
(1120)
47.5
(1347)
55.5
(1573)
63.5
(1800)
71.5
(2027)
DS053-50Hz
DS070
DS077
DS105
5
(142)
13
(369)
21
(595)
29
(822)
37
(1049)
45
(1276)
53
(1502)
61
(1729)
69
(1956)
* For system charges over 200lb (90.7kg), consult your Emerson representative.