Laird Nextreme NRC400, Спецификация и руководство пользователя

Страница: 44 / 50

44
17.5 Draining Procedure
NOTE
Risk of Damage to the pump
When the coolant level in the coolant tank is too low and if it runs the pump dry, the pump can
be damaged or destroyed.
▪
Avoid running the pump dry to prevent damage
Requirements
▪
Unit prepared for maintenance. Refer to Preparing the Unit for Maintenance .
▪
Coolant hoses disconnected from the unit. Refer to Disconnect Hoses .
▪
Coolant cooled down to the ambient temperature.
Required Tools and Materials
▪
Collection container/Hose
– Note, unit holds approximately 1-2 liters of fluid.
Procedure
▪
First you may tip it over and drain the reservoir. If this cannot be done then, first connect a fitting
to the inlet and allow the reservoir to drain. Next, connect a fitting to the outlet. It might be best
to have some hose on this one to allow gravity to help drain the engine. A light burst of air 5-10
PSI into the reservoir could help to push the liquid from the engine.
▪
The coolant is now drained.
17.6 Coolant Maintenance
Periodically inspect the coolant for contamination. Replace if the coolant becomes
dirty/contaminated.
17.7 Cleaning the Heat Exchanger
Cooling capacity is heavily reduced if the heat exchanger is contaminated. The heat exchanger must
be checked for contamination (particulates) regularly and be cleaned, if required.
The cleaning of the heat exchanger must be performed in accordance with the maintenance
intervals.
DANGER
The use of water/chemicals for cleaning the heat exchanger can cause short circuit and damage
the fan
The use of water/chemicals for cleaning the heat exchanger can damage the fan and result in a
short circuit. In this case persons are in danger to get an electric shock.
▪
Do not clean the heat exchanger with water/chemicals.
NOTE
Damage to the fins of the heat exchanger due to improper handling of the unit.
Damaged fins of the heat exchanger lead to a reduced cooling capacity.
▪
Take care not to damage the fins of the heat exchanger when cleaning the heat
exchanger.
▪
Air pressure used to clean the fins must be controlled to prevent damage to the fins.