Advantage Plus EL-85

SP Scientific VirTis Advantage Plus EL-85 Benchtop Shelf Freeze Dryer Lyophilizer 100004539 Spares/Repairs
With Chamber and manifold sample placement and shelf heating/cooling.

This FD has 2 issues –
Door handle broken. Still useable and an easy fix.

Whilst the condenser temperature quickly goes down to -85˚C and the shelves heat cool
as expected there seems to be an issue with the vacuum.
The seals are in good condition (looks unused) and can see no sign of leakage.
The gauge will not go down below 980mTorr.
Also at atmospheric pressure it reads 570 Torr (should read approx 750 Torr).
We have tried several vacuum pumps.
Therefore we think there is an issue with the vac gauge.

Specification:
Condenser capacity: 2 litre water
Shelf temperature: -70 to +60˚C
Condenser temperature: down to -85˚C
Shelf dimension: 25 x 35cm (w x d)
Dimensions: 64 x 61 x 69cm (w x d x h)
Weight: 118kg
Electric supply: 200-240V, 50Hz, single phase