Safety
15
Figure 1: Mounting position of the safety equipment of the unit
(1) Pressure relief valve
(3) Flow switch
(4) Level guard
(5) Temperature controller with display
(6) On/Off switch for the refrigeration circuit
(7) W
arning light „Coolant level low“
2.6. Guards
Direct access to hazardous parts or areas of the unit is restricted by the unit cover. The unit cover
may only be removed for the purpose of maintenance or repair works and shall be replaced prior to
taking the unit back into operation (see "Removing and mounting the unit cover").
2.7. Caution label
Danger spots on the unit are indicated corresponding to German safety regulation DGUV Vorschrift
9 "Sicherheits- und Gesundheitsschutzkennzeichnung am Arbeitsplatz"
Caution labels on the unit must be easily readable at all times. Illegible caution labels must be ex-
changed without delay.
Figure 2: Caution labels on the unit
(1) Warning of hazardous electrical voltage
(2) Hint about the use of the operation cap
