INSTALLATION GUIDE · USER MANUAL
GAS HEATER SERIES
G&D CHILLERS, INC.
•
GD
-
MNL
-
GSHTR_R2024B
13
MAINTENANCE
Please contact G&D Technical Support
if you have any ques�ons or concerns regarding the performance,
opera�on, or maintenance of your heater:
800-555-0973
•
See sec�on below for a brief recommended list of maintenance tasks.
•
Contract a licensed technician to evaluate the heater regularly. These checkups should occur annually
at a minimum. Every 3
-6
months is recommended.
The heater requires minimal maintenance. Always verify that the glycol reservoir is at least ¾ full prior
to use, and that the level does not drop below half full while in opera�on.
The following tasks can be performed without the need for specialized equipment or training:
•
Check glycol level and glycol/water ra�o monthly. Use glycol refractometer to confirm 35% glycol
mixture.
•
Verify pump func�on quarterly. Confirm glycol supply pressure. Listen for abnormal sounds from the
pump.
•
If not in use for long periods of �me, the pumps should be started occasionally and fluid circulated to
maintain proper seal lubrica�on
.
•
Verify thermostat func�on quarterly. Check displayed temperature against a thermometer
measurement.
•
Periodically inspect the control panel for any signs of failure (scorched or frayed wiring, moisture…).
Damaged wiring
,
insula�on, or electrical components
should be replaced immediately.
•
See warning below. With
power to the unit disconnected, inspect control panel contacts on pump
contactors. Contact an electrician
for assistance or
if replacement
contactors
are needed.
WARNING:
DO NOT ATTEMPT TO SERVICE ELECTRICAL COMPONENTS OR MAKE
ADJUSTMENTS IN ELECTRICAL PANEL WITHOUT PROPER TRAINING AND
IMPLEMENTATION OF LOCKOUT/TAG-OUT SAFETY PROCEDURES