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service
1 complete servicing and repair of Techne products is available at
Techne see the contact information on pages 3 or 4.
2 A Service Manual is available and servicing may be undertaken by
any competent refrigeration engineer.
The following table gives a guide as to the gas charge for each
of the units:
Unit
RB-5A
RB-12A
RB-22A
* There have been several improvements in design which
have varied the charge. To increase the cool-down rate
increase the charge slightly; to reach a lower temperature
reduce the charge slightly. Adjust the charge during testing.
§ Early units were charged with R12 or R502 please consult
Techne for advice on repair of older units. Units charged with
R404a or R134a have GN after the Serial Number,
eg 12345-13gn.
R e f r i g e r a t e d B a t h s U S E R ' S M A N U A L
Refrigerant §
Charge *
R134a
85 gm
R404a
250 gm
R404a
250 gm
P A G E 15
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