-6-
4.4 Pressurizing
If motor is overloaded, the motor starter will stop the compressor unit. For safety rea-
sons a safety valve is fitted with the pressure switch, the function of which is to
equalize pressure if this exceeds max. allowable pressure for the unit in question. Do
no touch the safety valve.
Adjustment of max. pressure of press switch and differential pressure has been car-
ried out at the factory. If re-adjustment is required do as follows when pressure is on:
Dismantle pressure switch cover. Adjust max. pressure on the big screw. If higher
pressure is required turn clockwise. Adjustment of differential pressure on small
screw. For higher differential pressure turn clockwise.
IMPORTANT
Never adjust to higher working pressure than shown by red pointer on ma-
nometer
4.5 Approval of compressor unit
In Denmark air receivers are subject to notification no. 746 of November 26
th
1987
issued by the Directorate of Labour Inspection. According to this notification the re-
ceiver must be placed so that it is possible to inspect it.
With regards to air receiver with pressure in bar times volume in liter higher than
2000 the following is valid: STENHØJ KOMPRESSOR A/S notifies the Directorate of
Labour Inspection, provided that user’s name and address are known; otherwise no-
tification and log book are sent to the wholesaler.
The owner of the unit is obligated to notify the Directorate of Labour Inspection when
unit has been installed.
Inspection of air receiver is done when mounting it and then every other year. Inter-
nal and external inspection to take place every fourth year.
Last inspection date must be stamped on air receiver by the inspector.
Inspection to take place first time prior to using the air receiver; and also after re-
building, major repair or after having moved the air receiver.
All dates and results of inspections is to be noted in the log book.
The owner or user of air receiver is obligated to having it inspected. Inspection al-
ways to be carried out by a person authorized by the Directorate of Labour Inspec-
tion.
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