Instruction Manual ZHK
106/140
V07-21.0
8.2.4 Compressor lubricant
-
Compressor oil, a synthetic ester oil, is highly hygroscopic, so that the bound moisture in the oil
cannot be completely removed by the evacuation of refrigeration circuit.
-
Air entering into the system must be completely avoided.
-
For R407C and R134a scroll compressors use Emkarate RL 32 3MAF oil.
8.3 Test run
After having completed the preparatory work the AHU can be started for the test run.
-
For testing the device, measuring the motor data and the volumetric flow rate, the device must
be fully connected to the operational duct system.
-
The AHU doors must be closed, to eliminate errors in pressure drop measurement results.
NOTICE!
Before starting the fan, open the dampers! The Fan might not work against closed
dampers.
In addition, the actual power consumption of all phases shall be measured and compared with the
nameplate. If the actual power consumption is too high, there could be a faulty connection. There-
fore, the system must be shut down immediately.
Measure the volume flow and the pressure difference. Often the measured airflow does not match
with the design data of the device.
Possible causes for low airflow:
-
The external pressure drop is higher than indicated on the technical data sheet.
-
Possible closed fire or VAV dampers in the duct
8.3.1 Adjusting variable pulleys
Figure 204:
Smallest working diameter
Figure 205:
Biggest working diameter
Belt type
Pulley type
Min. working di-
ameter (mm)
H max.
(mm)
Max. working di-
ameter (mm)
SPZ
RST 84
62
9
80
RST 95
73
9
91
RST 100
78
9
96
RST 108
90
7
104
SPA
RST 108
76
13
102
RST 120
88
13
114
RST 129
97
13
123
RST 139
109
12
133
RST 146
116
12
140
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