QPix 420 Colony Picking System User Guide
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Weekly Maintenance
Check the operation of the Emergency Stop button. See
If you use the external air compressor, drain the accumulated moisture from the internal air
tank weekly.
If the instrument door shows signs of damage, request a replacement door from Molecular
Devices. See
Semi-Annual Maintenance
Completely disassemble the head and thoroughly clean all component parts.
A complete instrument maintenance should be done every six months by an approved
service engineer. To obtain a maintenance contract or schedule a service visit, contact your
representative or technical support. See
.
Cleaning the Instrument
For efficient decontamination of pathogenic micro-organisms, wipe all non-removable parts
within the instrument with a cloth using 70% ethanol.
CAUTION! Molecular Devices recommends that you spray ethanol on a cloth for
cleaning the instrument. Autoclaving is not compatible with anodized parts. Do not use
the ethanol on acrylic parts. Use water and then turn on the UV lamp. Do not use
abrasive cleaners, as they can damage the surface of the bed.
Alternatively, instead of soap and water, clean the imaging glass and front door with a 10%
vinegar and water solution, Spor-Klenz Ready-To-Use Cold Sterilant (US/EU/ Asia), or ParaSafe
(EU).
The instrument can be left in a laboratory during formaldehyde vapor fumigation at a safe
concentration. However, excessive formaldehyde treatment can damage sensitive electrical
and optical components.
You can clean all components that come into close contact with biological materials.
The picking head and pins can be removed for cleaning. See
.
Before storing the head, or whenever it needs cleaning, wipe the exterior of the head with a
cloth using 70% ethanol. To store the head, slide it into its metal cover with the pins facing
inward and then secure it in place with the thumbscrew and washer.
You should sonicate the pins weekly. See
Cleaning the Head and Pins on page 196
CAUTION! Do not clean the imaging glass and front door with ethanol because it
degrades the surfaces.
Cleaning the Head and Pins
The reusable pins in the head are automatically sanitized when you run a process that includes
a Sanitise profile. They are cleaned before the first pick, between each cycle of picking, and at
the end of the run. A Sanitise profile consists of the following configurable tasks:
Brush the pins in one or more of the three wash baths.
Use the halogen dryer to remove residual ethanol from the pins.
For more thorough cleaning of the head and pins, remove the head from the actuator. See
.
The head is housed in a unique actuator system that permits easy exchange and set-up of the
head.
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