Unigas HP60, Manual

Page: 12 / 36

12 INSTALLATION MANUAL
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Key:
1) Oil pump
2) Min oil pressure switch
3) Oil electrovalve
4) Nozzle
5) Adjustable cam
6) Pressure regulator
7) Manometer
8) Max oil pressure switch
To prime the pump
Before starting to regulate for light oil operation it is necessary to prime the light oil pump using the following procedure:
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turn on the burner; when the electrovalve comes on switch on the light resistor and clear the air out of the manometer
connection. Before starting up the burner make sure that the tube leading back to the tank is not obstructed. Any blockage
could lead to failuer of the pump seal.
To regulate the light oil flow
To adjust the light oil flow select a nozzle (reflux type) of approapriate size and calibrate the delivery and return pressure using
the information in Tab.1(see Fig.17 for an outline diagram of the light oil circuit); for correct nozzle size refer to the tables in the
Appendix.
N O ZZL E
B R AN D
DE LIV E RY
P RE S S URE
bars
M A X. B A CK
P RE S S URE
bars
M IN. B A CK
P RE S S URE
bars
M IN/M A X
RA TIO
B E R G O N ZO A3 2 0 1 3 -1 9 * 3 1 /3
MO N AR C H B P S 2 1 2 1 3 -4 1 /3
FL U ID IC S K 3 3 0 2 1 5 1 /4
FL U ID IC S K C 2 2 0 1 5 3 1 /4
* Fo r th e flo w a t d iffe re n t p re s s u re le ve ls s e e th e ta b le s in Ap p e n d ix.
Fig. 17
Fig. 18