TENNEY ENVIRONMENTAL
Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4
Page 39
6. Only after disconnecting all power to the chamber, inspect inside the machinery compartment and look
for loose electrical connections, frayed wires, loose components, or other potential problems.
Period: approx. every 6 months.
7. Only after disconnecting all power to the chamber, inspect the electric heaters inside the chamber
conditioning plenum and look for sagging elements, broken insulators, or other defects.
Period: approx. every 6 months.
8. If your chamber has the optional TempGard IV, do the following:
Period: approx. every 6 months.
a) High Setpoint: Dial a temperature well below actual workspace temperature. The instrument must
transfer to alarm state, disabling protected circuits.
b) Low Setpoint: Dial a temperature well above actual workspace temperature. The instrument must
transfer to alarm state, disabling protected circuits.
c) Test the alarm buzzer, making sure it is operable.
d) If customer's contact closure is used to energize an externally powered heat source, make sure
that the contact closure removes power when TempGard IV is in the alarm state.
Important Note: For complete preventative maintenance instructions or equipment maintenance
instructions on any of the instruments, electrical or mechanical components, or electrical / mechanical
machinery and motors, you must refer to their operating manuals included with your Tenney, or Lunaire
Environmental manual. The smaller manuals and vendor cut-sheets are located in the Supplemental
Instructions Section. Any large manuals that could not fit into this 3-ring blue binder are sent alongside of it.
Notes:
♦ The refrigeration system is permanently sealed and a periodic oil change is NOT required.
♦ If a loss of cooling performance is noted, immediately check the condenser for restricted air flow.
♦ All motors are permanently lubricated; therefore, greasing or oiling is not required.
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