Euroclima ZHK, Manual

Page: 99 / 142

Instruction Manual ZHK
98/140 V07-21.0
8 Commissioning
8.1 Preliminary steps
-
Clean thoroughly the AHU and all components of dust, shavings and any other debris.
-
Remove all loose parts like tools, screws, unneeded parts etc. and any documentation from the
AHU. Such parts can be sucked in by the fan and lead to its destruction.
-
check all bolt connections and electrical connections and retighten if necessary
-
Ensure that the duct pressure corresponds to the pressure for the nominal air flow and the
pressure specified in the technical data sheet.
-
Ensure that all planned filters are mounted. Non mounted filters can overload the fan motor.
-
All cables must be checked for damage to the insulation and replaced if necessary.
-
Function test of the repair switch (emergency stop switch):
o
Press the switch
o
Check that there is no voltage or power
o
After pressing the switch again, the system should not restart and should remain with-
out power and at a standstill. A manual start command is also required for this process
(see
chapter 7.4 (Main switch (emergency stop switch)
.
Here are some important points to consider, which could cause problems after transport or inap-
propriate AHU handling.
-
Rotate the impeller of the fan by hand, to check whether it rotates freely.
-
Check that the screws of variable pulleys are tightened
–
refer to
Figure 202
, tightening torque
depends on the type of bush, according to
Table 12.
Table 12:
Tightening torque for variable pulleys
Socket 1108 1210 1215 1610 1615 2012 2517
Nm 5,7 20 20 20 20 32 50
Figure 202:
Fixing screws
-
Check the tension of the belt and the alignment of the pulleys, refer to
chapter 9.2.5 (Re-ten-
sioning of belts)
.
-
Check the motor connection and the matching of the supply voltage at the rated voltage - a
fluctuation of supply voltage b -5% is permitted.
8.1.1 Variable frequency controlled drives (frequency converter) - parameters
The frequency converter must be configured, if this is not undertaken by EUROCLIMA. Therefore,
the relevant persons must refer to technical data sheet: parameterization using the following
Table