SUB Universal, SBB boiling, JB and PB unstirred water baths
Part No. 15133/Issue 14 Page 13 January 2010
6.4 PB1
Temperature range (Ambient +5C) to 60C
Setting range 20 C to 60C
Stability at 37C 0.3C
Supply voltage range 230V 10% @ 50Hz or 60Hz
Power Rating PB1 - 350VA
Over temperature protection Resettable fixed temperature cut-out
Dimensions l/w/h (mm) 355/160/130
7 Maintenance and Service
All Grant laboratory products are designed to comply with IEC1010-1 and can be flash tested.
Some are fitted with radio frequency interference suppressors. Therefore it is recommended
that only a d.c. test is performed.
SUB baths only:
The over temperature cut-out should be checked periodically by turning the set over
temperature control anticlockwise until the alarm lamp comes on. The cut-out should then be
reset and set-up (see 3.1.3). If the alarm lamp fails to light with the knob turned fully
anticlockwise the unit should be checked by a competent person.
No other routine maintenance is required.
7.1 Cleaning
The cases can be cleaned with a damp cloth after disconnection. Do not use solvents. The
immersed parts can be cleaned using proprietary heating element cleaners. CAUTION: these
may be toxic - follow the cleaner manufacturer's instructions.
Before using any decontamination or cleaning method except that recommended, check with
our Service Department, or in other countries with our distributor, that the proposed method will
not damage the equipment
7.2 Replacement of Fuses
7.2.1 SUB, SBB and PB1
Empty the bath. Disconnect the unit from the power supply.
Remove the IEC plug from the socket in the back of the bath.
Press down the fuse drawer catch (see figure).
Pull out the fuse drawer, check and replace with the correct fuses if necessary.
The fuses are Littelfuse 3AB 314 series, fast-acting, high breaking current (max breaking
current at least 750 A); dimensions are 1.25 inch long, 0.25 inch diameter. Replace fuses only
by the same type and rating (250volt).
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