Hach-Lange SIGMA SD900 Refrigerated Sampler and All Weather Refrigerated Sampler User Manual - Manual (Page 20)

18
General Information
2.2.1.2 Factory installed optional controller compartment heater (AWRS only)
Warning: Fire Hazard. Models of AWR samplers with cabinet
heaters may ignite flammable materials and cleaning solvents.
DO NOT use any flammable liquids or materials to clean or
disinfect the sampler or any component under the cabinet
hood of the AWR samplers. Before performing any cleaning
operation, disconnect the AWR sampler from its power source.
If cleaning of the sampler controller and pump cannot be done
with water, the sampler must be disconnected and moved to a
location outside of the cabinet for cleaning. Allow sufficient
time for the sampler controller and pump to dry before
installing and putting the sampler back into service. Do not
attempt to clean the controller compartment heater by
spraying it with liquids. Protect the heater from moisture such
as ice and snow.
The optional controller compartment heater provides several
benefits in colder climates:
• Prevents residual liquid from freezing in the pump
• Pump tubing stays resilient, prolonging the life of the tubing,
pump rollers, motor, and gear box
• Prevents ice and snow from building up on the cover
• Keeps LCD functional and electronics from temperature
extremes
Figure 5 AWRS Cover locking mechanism
1 Strike plate on lid 3 Latch handle
2 Controller cover 4 Latch