Envicool EMW90HDNC1U - Replacing the External Circulation Fan; Replacing the Compressor

User Manual
7 Fault Management
34
EMW90HDNC1U Air-cooled Chiller
10: Power module
11: Electronic expansion valve
12: Coolant filter
13: Expansion tank
14: Dry filter
7.4.2 Replacing the External
Circulation Fan
Prerequisites

The power has been cut off for at least 10
minutes.

The Phillips screwdriver and torque wrench
have been prepared referring to Table 3-1.
Procedure
Step 1 Remove the screws on the maintenance
panel on the fan side and take off the
maintenance panel.
Step 2 Remove the wiring terminals of the fan
firstly, and then remove the screws
around the fan bracket.
Step 3 Remove the fixing screws between the fan
and the bracket.
Step 4 Take out the fan and replace it.
Step 5 Install in the reverse order of Step 3 to
Step 1 to complete the parts
replacement.
7.4.3 Replacing the
Compressor

Please contact the manufacturer for after-sales
treatment when replacing the compressor. It is strictly
forbidden to replace it without permission.

It is strictly forbidden to treat the failed compressor as
unclassified municipal waste, and it must be treated
independently according to relevant requirements.

Veuillez contacter le service après-vente du fabricant
pour le remplacement du compresseur, le
remplacement privé est strictement interdit afin
d'éviter un fonctionnement anormal de l'unité dû à une
mauvaise utilisation.

L'élimination de ce compresseur défectueux en tant que
déchet municipal non trié est strictement interdite et
doit respecter les exigences pertinentes pour une
élimination indépendante.
7.4.4 Replacing the Electrical
Heater and Circulation Pump
Prerequisites

The power has been cut off for at least 10
minutes.

The Phillips screwdriver and torque wrench
have been prepared referring to Table 3-1.
Background
The electrical heater and circulation pump are
part of the coolant circulation system. Before
replacing the electrical heater and circulation
pump, the coolant in the chiller and the pipeline
should be drained. At the same time, it is
recommended to take out the filter element in the
coolant filter for cleaning or replacement.
Procedure
Step 1 Refer to 6.6 Coolant Maintenance to
drain the coolant of the chiller.
Step 2 Remove the entire chiller and place it in an
area with sufficient maintenance space.
Step 3 Remove the maintenance panels on both
sides of the chiller.
Step 4 Remove the chucks on the inlet and outlet
sides of the circulation pump, electrical
heater and coolant filter respectively.
Step 5 Remove the mounting screws of the
circulation pump and the fixing bracket of
the electrical heater respectively.
Step 6 Take out the electrical heater, filter
element and circulation pump for
replacement.
Step 7 Install in reverse order from Step 5 to Step
1 to complete the parts replacement.
7.4.5 Replacing the Electrical
Components