
Publication 5390-001 Revision B
26
Har
v
ard Appar
atus Model 33
T
win Syr
inge Pump User's Man
ual
Appendix G: Maintenance
Pump 33 requires no special maintenance other than keeping it clean by avoiding acci-
dental spills of pumped material.
The two guide rods and the lead screw should be sparingly lubricated periodically
with the Magnalube-G R grease provided with the pump. This Teflon R based grease
is available either from Harvard Apparatus or Carleton-Stuart Corp. 13-02 44th Ave.,
Long Island City, NY 11101.
Solvents of any type should never be used to clean the pump. A mild detergent solu-
tion may be used to clean the keypad.
Fuse Replacement
Make sure power cord is disconnected from main supply before replacing fuse.
Remove bottom cover on pump by removing four (4) rubber feet and four (4) screws.
Locate fuse on power supply module. Remove fuse from fuse clip. Use caution no to
break fuse when removing. Replace fuse, bottom cover, screws and rubber feet. For
continued fire protection replace fuse only with 250V fuse of the specified type and
rating. (3AG 1AMP 250V SLO-BLO)
1 AMP S.B.
FUSE
Figure 11. Fuse Replacement
WARNING:
Use in manner not specified by manufacturer
may impair protection provided by equipment.