Installation and Operation
Laboratory Vacuum Ovens
7 Maintenance
7.1
General Maintenance
CAUTION!
Maintenance should only be performed
trained personnel.
WARNING!
Disconnect oven from main power
attempting any maintenance to oven or its
controls.
CAUTION!
This product contains fiberglass wool or
other refractories which can result in the following:
May be Irritating to skin, eyes, and respiratoty tract.
May be harmful if inhaled.
Possible cancer hazard based on tests with
laboratory animals.
studies to date are
inconclusive. No human exposure studies with this
product have been reported.
WARNING!
Before maintaining this equipment, read
applicable MSDS
Safety Data Sheets)
provided with this unit.
WARNING!
When installing, maintaining, or
removing the refractory insulation, the foliowing
precautions will minimize airborne dust and fiber:
Keep personnel not involved in the installation out of
the area.
Use
a
good vacuum to clean area and equipment.
Use
a
dust suppressant if sweeping is
Do not use compressed air.
Use
mask suitable for nuisance dust.
Wear
sleeve clothing, gloves, hat, and eye
protection to minimize skin and eye contact. Do not
wear contact lenses.
Thoroughly wash self after work is
Launder work clothing separate from other clothes
and thoroughly
equipment after
use. If
contains a larae amount of dust
fiber,
of
clean.
Promptly place used fiberglass parts and dust in
plastic bags and dispose of properly.
WARNING! Disconnect oven from main power
before attempting any maintenance to oven or its
controls.
Regular maintenance is required to keep the oven running at
optimum levels.
1.
Clean the oven interior as necessary with acetone, alcohol, or
ether.
WARNING!
When using cleaning materials,
ail precautions
on the cleaning containers.
Always use cleaning materials
ventilated areas
as inadequate ventilation can be fatal.
Note:
Frequency of cleaning depends on the oven workload.
the oven becomes contaminated, the ultimate vacuum
level will not be attained.
2.
Check hose connections for leaks weekly.
3.
Check the vacuum pump oil level.
4.
Check the condition of the vacuum pump oil. Replace the oil
if
i t is contaminated.
7.2
Gasket Maintenance
Disconnect oven from main power
before attempting any maintenance to oven or its
controls.
The door gasket is designed for easy removal and installation.
This gasket may come off when the door i s opened after high
temperature operation or processing of workloads containing
resin. To prolong gasket usage, clean the oven to remove any
resin.
7.3
Door Alignment
WARNING!
Disconnect oven from main
before attempting any maintenance to
or its
controls.
The oven may not pump down properly
if
the door is out of
alignment. To realign the oven door, complete the following
steps:
1.
Lay the oven on its back.
2.
Loosen top and bottom hinges.
3.
Square the door. Check that the glass comes in contact with
the gasket.
4.
Place a small amount of pressure (approximately one pound)
on the hinges.
Note:
This pressure is required so that the door seals when
closed. The
on springs to achieve a complete
seal.
5.
Tighten the hinges.
6.
Pump the oven down.
