Graseby 3000/500, Manual

Page: 98 / 231

G r a s e b y M e d i c a l L t d .
7 — 2
I s s u e A ( A p r i l 2 0 0 2 )
3 0 0 0 / 3 1 0 0 a n d 5 0 0 / 5 0 5 S e r v i c e M a n u a l
V o l u m e t r i c I n f u s i o n P u m p s
7
Recommended test equipment
The following equipment is recommended for performing the
functional and accuracy checks described on page 7-8:
• An air regulator which ranges from approximately 2 psi to 12 psi
(Bellofram 10-B or equivalent). This compressed air source is
connected to the lower end of an installed administration set in
order to verify the accuracy of occlusion alarm thresholds and
valve sealing integrity.
• An in-line digital pressure meter with a minimum range of 0 to 15
psi (BioTek Universal Pressure Meter DPM-2).
• A 50 mL burette graduated in 0.1 mL increments is used to verify
the ±2% accuracy. The burette must be traceable to the National
Institute of Standards and Technology (NIST).
• A digital stopwatch (Microtimer), with a minimum 2 decimal
places (100ths of second) is used to verify the rate accuracy.
Recommended troubleshooting equipment
The following equipment is recommended for troubleshooting
possible infusion pump malfunctions:
• A multimeter (Beckman 3010 or equivalent) is used to verify AC
and DC voltages, battery charging current, resistance, continuity,
etc.
• An oscilloscope (Tektronix 2213 or equivalent) is useful for
electronic signal tracing and viewing various waveforms.
• Regulated DC power supply (B & K 1601 or equivalent) is used to
power the pump when the AC power cord and battery are both
disconnected. The power supply must be capable of providing at
least 2 Amperes at 12 Volts. The output must be adjustable to 0.01
Volt increments. A 2K Ohm trimpot placed in a series with the
power supply’s voltage adjusting component yields fine voltage
adjustment.
The power supply is used in place of the pump’s battery when testing
battery voltage trip points. The DC voltage is varied to simulate
decreasing battery voltage.
• A ground tester is used to test ground resistance.
• A digital Safety Analyser (BioTech Model 170 or equivalent) is
used to measure leakage currents.