Installation and commissioning of the unit, Site of installation, Mains electricity – Martin Christ Alpha 2-4 LDplus User Manual
Page 29: Fuses on site

Operating Manual Freeze Dryer ALPHA 1-4 LDplus / ALPHA 2-4 LDplus
Installation and Commissioning of the Unit 29
4. Installation and
Commissioning of the Unit
4.1. Site of Installation
WARNING! Papers, cloths or similar items must not be
put behind the unit as the air circulation of the heat exchanger will 
not work any more. 
The freeze-dryer should be horizontally aligned. The ambient 
temperature should be within approx. +10°C and +25°C. 
The refrigeration compressor of the freeze-dryer is air-cooled. 
Sufficient air circulation must be ensured. A distance of at least 30 
cm to the wall should be kept. The unit should not be positioned 
near radiators or heat sources and direct insolation must be 
avoided. 
In case of insufficient air circulation or too high ambient 
temperatures pressure and/or temperature in the refrigerating 
system will increase. This may cause an exceeding of the 
admissible operation pressure and thus a breakdown of the freezing 
unit. 
 
The following connections are required at the site:
4.2. Mains Electricity
The operating voltage on the name plate must correspond to the 
local supply voltage. 
CHRIST freeze-dryers are units of safety class I. The units of the 
type ALPHA 1-4 LDplus / ALPHA 2-4 LDplus are equipped with a 
three-wire power cord with a IEC C13 connector (see also chapter 
1.3 "Technical specification"). 
4.3. Fuses on Site
The freeze-dryer must be protected typically with a 16 AG fuse.
