Euroclima ZHK Series, Instruction Manual, Page: 103 / 131

Instruction Manual ZHK
102/129 V07-19.0
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The fan bearings are lubricated for life. Except the pillow block bearings of larger fans, with de-
manding operating conditions, should be lubricated annually in accordance with
Table 13
be-
low and this should be done with lithium soap grease (see
Table 14
) for recommended grease
types. After three lubrications the bearings must be removed, cleaned and greased again.
Ambient conditions Temperature range °C Lubrication interval
Clean T < 50 6 - 12 month
50 < T < 70 2 - 4 month
70 < T < 100 2 - 6 weeks
100 < 1 week
Dusty T < 70 1 - 4 weeks
70 < T < 100 1 - 2 weeks
100 < T 1 - 7 days
Extreme humidity 1 week
Table 13:
Lubrication intervals for fan bearings
Figure 199:
Fan bearing with grease nipple
(example Comefri NTHZ)
Supplier Type Basis Temp. range
FINA Marson HTL 3 Lithium 30 °C / +120 °C
SHELL Alvania Fett 3 Lithium -20 °C / + 130 °C
ESSO Beacon 3 Lithium -20 °C / + 130 °C
MOBIL Mobilux EP3 Lithium -30 °C / + 130 °C
Table 14:
Recommended grease types
Plug fan
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The fan is directly flanged to the motor and due to the absence of the belt drive it is a service
friendly component.
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To reach the operating point, a frequency converter is required.
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Danger: Deposits on the wheel can cause damage (risk of fatigue fracture) and the impeller can
break!
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Visual inspection: Check the wheel for any particular weld cracking.