Model 401 & 403 Pass-Thru
Service and Installation Instructions
99-21972-S001 Rev. C
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1
Troubleshooting
PROBLEM / ISSUE
PROBABLE CAUSES / FIXES
FINAL REMEDY
Condensation on Door Glass,
Door Rail, or Frame
Fan to Door Proximity too small
Install air deflector
Evaporator fans blowing cold air directly onto glass/frames
Shelves not fully stocked
Stock merchandise
Door/gasket seal malfunction
See “Insulation or Air Leaks”
Store conditions (temperature and relative humidity) outside required parameters
Adjust HVAC / Dehumidifier settings to meet required
parameters
Cooler/freezer temperature set too low
Adjust cooler/freezer temperature to design specified setting
Condensation in between Glass
Panes
Seal compromised cause loss of gas or vacuum (check by cleaning the glass on
merchandise and customer sides)
Replace door
Rust/Corrosion on Hinge Pin
Excessive moisture from ambient/store conditions
Add Dielectric Grease to Hinge Pin Receptacle
Replace Hinge Pin/ add adequate amount of Dielectric Grease
Ice buildup inside Freezer
Air infiltration Box/frame not sealed according to Anthony instructions
See “Insulation or Air Leaks”
Ensure frame and box sealed according to Anthony Quick
Installation Requirements Guide
Conduct smoke test
Door not closing or sealing
Check gasket to ensure proper installation
Replace gasket
Check the gasket for damage
Check Hold-Open
Replace Hold-Open
Check TorqueMaster torque (plumb)
Replace TorqueMaster2
Check TorqueMaster sag
Check Frame/Door is square
Check Plastic covers on rails
Replace Plastic Covers
Check Plastic covers on frame mullions
No Power to Frame
Check Power Supply
Adjust energy controller to Full-On
Replace Power Supply
Replace Energy/Humidity Controller
Replace Hinge Pin
Replace wiring
Check energy/humidity controller
Check hinge pin connections
Check glass wire connections
Check hinge pin wiring
Low Voltage
Check main voltage
Adjust energy controller to Full-On
Replace Frame heater wires
Check humidity controller
Check the Amp draws to the heater wires in the frame
Door/Gasket Seal - Malfunction
Check gasket
Replace gasket
Replace hinge pin
Replace TorqueMaster
Check door mount
Check Door is square and level
Frame not Square or Plumb
Frame not properly shimmed
Use correct Shim to level frame
Use rubber mallet to adjust frame plumb within 1/16”
The frame should be
square to within 1/16”
The frame should be plumb within 1/16”
Insulation or Air Leaks
Frame must be properly shimmed, level, and plumb
Seal gaps with approved NSF-approved Food Grade Silicone Sealant per
Quick Installation Requirements Guide.
Ensure encapsulated blue board insulation is present (Thermal Frame with Low Temp and NT
High Humidity applications only)
Use RTV-108 NSF Approved Silicone Caulk to fill the perimeter of the frame on the
refrigeration side (inside the case) and at all frame joints as required so there are no air gaps.
Use RTV-108 NSF Approved Silicone Caulk to fill the perimeter of the frame on the
refrigeration side (outside the case) and at all frame joints as required so there are no air gaps.
Ensure Gap between frame and refrigeration does not exceed 1/8”, gaps larger than 1/8” will
require additional shimming to reduce gap size before sealing
Ensure all electrical conduits are properly sealed to prevent moisture and air from migrating into
the box, use RTV-108 NSF Approved Silicone Caulking if necessary
