Easy Spray-H
Service manual
34/48
Issue 1.9
Ref. NR-00088-ENG
http://www.gamapur.com/
Heaters
WARNING!
Before attempting to fix any kind of malfunction, make sure that no buttons
are lit on the electrical panel, that the power switch is in the OFF position and that the
unit is disconnected from the power supply.
Never open the electrical console when the
unit is connected to the power supply.
Heaters can reach high temperatures. Always wait
until they have cooled down before handling them.
NOTE:
The thermostat is a safety device which is in contact with the heater.
If the
temperature
exceeds
120ºC
(248º)
the
thermostat will cut off the power supply to the
temperature regulator.
The thermostat will not
start working again until the temperature of the
heater falls below 120ºC (248ºF).
If the temperature of either heater (isocyanate or
polyol) exceeds 90ºC (194ºF) an alarm will
activate and the corresponding number will appear
on the control panel (5 for isocyanate and 6 for
polyol).
Follow the procedure below, in the sequence
given, to rectify the problem and avoid expensive
repairs. Check that all automatic switches are in
the correct working position before proceeding to
locate faults.
PROBLEM
SOLUTIONS
The heater does not heat up, although the LED in the heater button is lit.
1-2-3
The symbol (---) appears on the heater display.
4
SOLUTIONS
1. Heating elements
Each heater contains two 900 W heating elements, connected in parallel and delivering a total
heating power of 1800 W (
Easy Spray-H
model). If a heater fails to reach the required
temperature after two or three minutes, it’s possible that one of its two elements is faulty.
To check the elements, proceed as follows:
With the power switch in the OFF position, use a tester to check the total resistance of the
heater, which should be 30 Ohms. A higher reading may indicate that one or more elements are
faulty.