Bacharach H25-IR Operation & Maintenance Manual

Also see for H25-IR: Product catalog Specifications Instruction

Contents

Bacharach H25-IR Operation & Maintenance Manual Manual pdf 54 page image

Parts &Service H25-IR48 Instruction 3015-52865. Drop down the rear panel far enough to allow the top cover to clear, being careful not to stress thecables attached to the inside of the panel.6. Remove top cover by sliding it toward rear of instrument.5.4.2 Fuse ReplacementThe H25-IR is protected from electrical damage by a single 1 A fuse located next to the AC receptacle at therear of the instrument.Items Required: Small flat-blade screwdriver Fuse (spare fuse located in fuse holder)Procedure:1. Remove AC power cord or battery from instrument.2. Using a small flat-blade screwdriver, carefully pry the fuse holder outfrom the fuse compartment.3. Inspect the fuse for damage or check its continuity. Replace the fuseas necessary.5.4.3 Probe Tip Filter & O-Ring ReplacementA filter located in the probe tip is the instrument’s first line of defense against dust, dirt, and moisture fromentering the instrument’s internal plumbing and IR detector. Replace this filter as it becomes dirty. A cloggedfilter is identified by a “Search Flow Fault,” “Measure Flow Fault,” or a “No Flow” fault occurring. Refer toSection 4.3 Responding to Fault .Periodically inspect the probe tube’s O-ring for signs of cracking. If this O-ring becomes defective, air could bedrawn into the instrument through the bottom of the probe tube resulting in inaccurate measurements.Items Required: Probe Tip Filter: Bag of 50: 0.287 in. diameter (7.2 mm) Probe Tube O-Ring Pin or TweezersProcedure:1. Unscrew probe tip.2. Pick out old filter with a pin or tweezers.3. Insert new filter inside probe tip.4. Replace probe tip.5. Unscrew probe tube and inspect O-ring. Replace O-ring if defective.6. Reattach probe tube.