Hitachi SAMURAI Series Service Manual page 85

3. Servicing
General notes
3.2 General notes
Before starting to remove any component, take into account the following notes:
D A N G E R
• Before performing any of the service operations described in this chapter, turn all the main switches off and
place security lockers or convenient warning indicators in order to prevent them from turning on accidentally.
• It is recommended to turn the power supply off for some operations.
• In all electrical works be sure there is no voltage. Check it with a multimeter.
C A U T I O N
• In case of sharped edged parts, as covers, use security gloves to avoid getting injured.
• In case of blocked or stuck parts, use appropriated tools and eventually lubricants to release them.
• When performing brazing work, besides security gloves it is a must to wear convenient eye protection.
N O T E
• When brazing operations are required, check to ensure whether there are flammable materials around when using
the burner for pipe connections. Oil, and lubricants used may ignite, as well the cleaning clothes and cleaning papers.
• Do not expose the refrigerant to the atmosphere for a long period in order to avoid mixing the water and foreign particles
with the refrigerant. After removing compressor, replace it quickly. If exposed for a long period, seal the suction and the
discharge pipe. Seal pipe ends using caps or tape.
• To reassemble perform the procedures in reverse way.
• To prevent contamination of the refrigerant with water or foreign particles, do not expose open to atmosphere for long
periods.
I M P O R TA N T N O T E
• The images and pictures shown in this chapter, except when the contrary is indicated, correspond to the
RCME-50AH1 model.
• Processes described are equally valid to all RCME-AH1 models and RHME-AH1 models. However, if any proce-
dure is different between both models it will be indicated in its corresponding paragraph.
3.3 Access inside the module for servicing
D A N G E R
• Turn OFF all the power source switches and place security lockers or convenient warning indicators in order
to prevent them from turning on accidentally.
• Insure that the module is totally stopped and the fans do not turn before to get inside.
• Be careful, some parts and components can be at high temperature.
• In case of sharped edged parts use security gloves to avoid getting injured.
• When performing brazing work, besides security gloves it is a must to wear convenient eye protection or can .
Access inside the module for servicing can be done through panels on the left (2 panels) or right side (2 panels).
Panels near the electrical box side give access to the compressor
Panels near the connections water pipes side give access the the brazed heat exchanger
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