Leica Biosystems EG1160 - Manual (Page 12)

12 Instruction manual V 4.1 – 05/2001
Paraffin reservoir (13)
The paraffin reservoir can hold up to 3 liters. The paraffin temperature can
be adjusted in a range from 45 to 70°C. The reservoir has an overheat pro-
tection in case of a temperature control failure. The paraffin quantity level is
indicated in the display graphically both in the standby and operating con-
dition. The display indicates two levels:
1. Reservoir filling quantity: 1 l - 3 l
2. Reserve: max. 1 l
When the "reserve" diagram is indicated, there is still approximately 1 liter in
the reservoir, so it is not necessary to interrupt work immediately. Never-
theless, it is necessary to refill the paraffin reservoir as soon as possible.
A grid inside the paraffin reservoir provides that only molten paraffin flows
through the dispenser outlet nozzle to ensure troublefree embedding. An
integrated filter at the junction point of dispenser and reservoir prevents
any contamination of molten paraffin.
Each refill of the reservoir can cause the formation of air bubbles that im-
pede a smooth paraffin flow. This can be overcome by pushing the paraffin
dispenser handle until a smooth flow is achieved..
The paraffin flow rate is adjustable in 10 increments (see "Initial operation",
"Controls").
A pump ensures a smooth and precisely controlled paraffin flow. Due to its
special design, the pump is protected against damage by solid or semiliquid
paraffin.
Paraffin dispenser with illumination (8)
The dispenser is separately heated and always has the same temperature
as the paraffin reservoir. The dispenser handle (9) is used for manually op-
erating the paraffin flow and is provided with a dispenser handle extension
clip (29). The paraffin flow is released by lightly pushing the mold backward
against the extension clip of the dispenser handle, thus opening the dis-
penser valve and activating the pump. Releasing the handle, a spring causes
it to return to the start position. Thus, the valve is shut and the pump opera-
tion is stopped. When dispensing is controlled with the foot pedal, the dis-
penser handle is not needed and can be flipped back out of the way. This
provides ample space allowing convenient filling of larger molds.
The homogeneous, diffuse illumination of the embedding area and refrig-
eration spot provides an optimal view of the embedding process and speci-
men orientation. The light bulb can be removed after removing the cap (23).
8. Components and features
23
9
29